Automotive Glossary

The number of vehicles a manufacturer assigns to a specific dealership for a given production period. High-demand models may have limited allocation, meaning fewer units available. As a dedicated GMC dealer in Wisconsin Rapids, our allocation is focused entirely on GMC trucks and SUVs.

A vehicle sold without any dealership warranty or guarantee of condition. The buyer accepts the vehicle in its current state. Common on older used vehicles. Always review a vehicle history report and consider a pre-purchase inspection before buying as-is.

The starting price of a vehicle in its standard trim with no optional packages or add-ons included. The base price does not include destination charges, taxes, or dealer fees. Most vehicles are purchased with at least some additional options above base.

A used vehicle that has passed a manufacturer-backed multi-point inspection and meets specific age and mileage requirements. CPO vehicles typically include an extended warranty and additional benefits not found on standard used vehicles. GM Certified Pre-Owned GMCs must pass a 172-point inspection. Wheelers tip: CPO is one of the best ways to get near-new reliability with a used-vehicle price.

A manufacturer incentive offered to buyers who are currently driving a competitor's brand and switch to GMC. It is designed to attract new-to-brand customers and is typically stackable with other rebates. Ask about available conquest offers when trading in a non-GM vehicle.

The price a dealer pays the manufacturer for a vehicle, listed on an invoice document. It is typically lower than MSRP. Dealers do not always sell at invoice price because holdback, incentives, and dealer cash can affect their actual cost. Knowing invoice price gives buyers a useful negotiation reference point.

A new vehicle used by dealership staff or for test drives. Demo vehicles are technically new but have accumulated some miles. They are typically sold at a discount and may still qualify for some new-vehicle incentives, depending on mileage and time in service.

A fixed fee added to the MSRP to cover the cost of shipping the vehicle from the factory to the dealership. This charge is set by the manufacturer, is non-negotiable, and applies to every vehicle regardless of where the dealer is located. It is listed on the Monroney sticker.

A dealer fee charged to cover the administrative cost of processing the paperwork for your vehicle purchase, including title work, registration, and financing documents. In Wisconsin, this fee is regulated and must be disclosed upfront.

Ordering a vehicle directly from the manufacturer with your exact specifications rather than choosing from existing dealer inventory. Factory orders typically take several weeks for delivery but allow you to get precisely the trim, color, and options you want.

A percentage of the MSRP (typically 1-3%) that the manufacturer reimburses to the dealer after the vehicle is sold. Holdback exists to help dealers cover floor plan interest and operating costs. It means a dealer can sell at or near invoice price and still retain a small margin.

A vehicle that has been built and shipped from the factory but has not yet arrived at the dealership. You can reserve or purchase an in-transit vehicle and it will typically arrive within days to a few weeks depending on logistics.

A manufacturer incentive rewarding existing GM/GMC customers who purchase or lease another GM vehicle. If you currently own or lease a GM product, you may qualify for additional loyalty cash on top of standard rebates.

An amount added above MSRP by a dealer due to high demand or low supply for a particular vehicle. Common during periods of inventory shortages. At Wheelers GMC of Wisconsin Rapids, we work to keep pricing transparent and fair for Central Wisconsin buyers.

The federally required label affixed to the window of every new vehicle that lists the base price, all installed options, destination charge, and fuel economy ratings. Named after Senator Mike Monroney who sponsored the legislation requiring it. Removing it before sale is illegal.

The price GMC recommends dealers charge for a new vehicle. MSRP includes the base price, all installed packages, and options but excludes destination charges, taxes, and fees. It is the starting point for price negotiations, not necessarily what you will pay. Wheelers tip: Ask for the out-the-door price, not just MSRP, so you understand the full cost before signing.

When you owe more on your current vehicle loan than the vehicle is worth. If you trade in a vehicle with negative equity, the difference is typically rolled into your new loan, increasing your new monthly payment. GAP insurance helps protect against this situation if the vehicle is totaled.

The total amount you will actually pay to drive the vehicle off the lot, including vehicle price, destination, taxes, title, registration, and all dealer fees. This is the most accurate number to compare between dealerships. Wheelers tip: Always get the out-the-door price in writing before you agree to anything.

Money offered by the manufacturer to reduce the purchase price of a vehicle. Rebates can be applied as a reduction to the purchase price or taken as cash back at signing. GMC frequently offers rebates on specific models and sometimes requires a choice between cash back and special financing rates.

The estimated value of a vehicle at the end of a lease term, set by the manufacturer's finance arm before the lease begins. A higher residual value means lower monthly lease payments. GMC trucks and SUVs tend to hold strong residual values, which can make leasing more attractive.

Your current vehicle, offered to the dealership as partial credit toward the purchase of another vehicle. Trade equity is the value applied to your new purchase. If your vehicle is worth more than what you owe, positive equity reduces your new vehicle's cost. If you owe more, that difference is negative equity.

A specific version of a vehicle model with a defined set of standard features and equipment. Higher trim levels include more features and command a higher price. For example, the GMC Sierra 1500 lineup includes trims like Pro, SLE, SLT, AT4, Denali, and Denali Ultimate, each with progressively more standard content.

A report generated from a vehicle's VIN that provides records of ownership history, reported accidents, title issues, odometer readings, and service records. Critical when considering any used vehicle purchase. Wheelers provides history reports on pre-owned inventory.

A unique 17-character alphanumeric code assigned to every vehicle at the factory. The VIN encodes the manufacturer, model, engine, model year, production plant, and serial number. It is used for everything from vehicle history reports to registration to recall lookups.

A nationally recognized credential awarded to automotive technicians who pass rigorous exams in specific areas of vehicle repair and maintenance. ASE certification is a standard benchmark for technician competence. GM-certified technicians must also complete brand-specific training at the factory level.

A safety system that prevents the wheels from locking up during hard braking, allowing the driver to maintain steering control. ABS sensors and modulators can require service over time. If your ABS warning light illuminates, have it inspected promptly as it may affect braking performance.

Adjustment of the angles of a vehicle's wheels to manufacturer specifications. Proper alignment ensures your vehicle drives straight, tires wear evenly, and fuel efficiency is maximized. Common causes of misalignment include hitting potholes, curbs, or off-road driving. Wisconsin roads can be tough on alignment — an annual check is recommended.

A diagnostic test that measures a vehicle battery's ability to hold a charge under a simulated electrical load. A battery can read 12.6 volts at rest but still fail to start the vehicle in cold weather. Cold Wisconsin winters are especially demanding on batteries — testing annually before winter is a smart preventive step.

Replacing old brake fluid with fresh fluid throughout the hydraulic braking system. Brake fluid absorbs moisture over time, which lowers its boiling point and can compromise braking performance. GM typically recommends brake fluid inspection every two years.

The three main components of a disc brake system. Pads are friction material that press against the rotor (metal disc) to slow the vehicle. Calipers are the hydraulic clamps that squeeze the pads against the rotor. Worn pads cause squealing or grinding, worn rotors cause vibration, and seized calipers cause pulling or dragging.

A comprehensive factory warranty covering most vehicle components from bumper to bumper. On new GMC vehicles, the standard bumper-to-bumper warranty is 3 years or 36,000 miles. Items excluded typically include wear items like tires, brakes, and wiper blades, as well as damage from accidents or improper use.

A filter that cleans the air entering the vehicle's interior through the HVAC system. It captures dust, pollen, and debris. A clogged cabin filter reduces airflow, forces the HVAC system to work harder, and can make the vehicle smell musty. Replacement is typically recommended every 15,000 to 20,000 miles or annually.

Draining the old coolant from the cooling system and replacing it with fresh antifreeze/coolant. Coolant degrades over time and loses its ability to prevent corrosion inside the engine and radiator. Regular coolant service prevents overheating and extends the life of water pumps, hoses, and the radiator.

The amount you pay out of pocket each time you bring your vehicle in for a covered repair under an extended warranty or vehicle service contract. Deductibles commonly range from $0 to $200 per visit. A $0 deductible plan costs more upfront but eliminates out-of-pocket costs at each service visit.

Changing the gear oil inside the front and/or rear differential, which distributes power between the drive wheels. Critical for trucks and SUVs used for towing, hauling, or off-road driving. GMC recommends differential service intervals based on usage, with more frequent changes for severe-duty applications.

An alphanumeric code stored by the vehicle's onboard computer when it detects a malfunction. DTCs trigger the check engine or other warning lights on the dashboard. A technician reads these codes using an OBD-II scanner to identify the source of the problem before diagnosing the root cause.

Coverage provided by the vehicle manufacturer at no extra cost when you purchase a new vehicle. GMC's factory warranty includes a 3-year/36,000-mile bumper-to-bumper warranty, a 5-year/60,000-mile powertrain warranty, and 6 years/100,000 miles of corrosion protection.

A cleaning service for the fuel injectors and intake system to remove carbon deposits and restore proper fuel atomization. Symptoms that may warrant this service include rough idle, hesitation, or reduced fuel economy. GMC direct-injection engines can particularly benefit from periodic induction cleaning.

A systematic check of key vehicle components performed by a technician during a service visit. A standard MPI covers fluid levels, brake condition, tire tread and pressure, lights, belts, hoses, and filters. It helps identify maintenance needs before they become larger problems. Wheelers tip: Request a written MPI report at every service visit so you can track your vehicle's health over time.

A standardized vehicle self-diagnostic system required on all vehicles sold in the US since 1996. The OBD-II port (typically located under the dashboard) allows technicians to connect a scan tool and read diagnostic trouble codes from the vehicle's computer systems.

Parts made by or to the exact specifications of the vehicle manufacturer. For a GMC, OEM parts are GM-branded components that match the quality and fit of what came installed at the factory. OEM parts maintain your warranty coverage, unlike some aftermarket alternatives. Wheelers tip: GMC Genuine Parts used at our dealership maintain your factory warranty. Aftermarket parts can void coverage.

Replacing engine oil and the oil filter to maintain lubrication, cooling, and cleaning of engine internals. Synthetic oil is engineered for better performance, longer intervals, and cold-weather flow compared to conventional oil. Most modern GMC engines require full synthetic oil and have extended change intervals guided by the oil life monitor.

Factory coverage for the core mechanical components that power the vehicle, including the engine, transmission, transfer case, and drive axles. GMC's powertrain warranty covers 5 years or 60,000 miles on new vehicles. It is typically longer than the bumper-to-bumper warranty because these components are built to last.

A recall is a manufacturer-required repair for a safety defect, completed at no cost to the owner. A TSB is an advisory from the manufacturer to technicians about a known issue and the recommended repair procedure. Unlike recalls, TSBs are not mandatory safety campaigns but are useful for diagnosing known problems. Check your VIN at nhtsa.gov for open recalls.

A single continuous belt that drives multiple engine accessories including the alternator, power steering pump, air conditioning compressor, and water pump. A worn or broken serpentine belt can strand you immediately. Signs of wear include visible cracking, squealing, or belt glazing.

Small electrical components that ignite the air-fuel mixture in each engine cylinder. Worn spark plugs cause misfires, rough idle, poor fuel economy, and reduced power. Modern iridium or platinum plugs used in GMC engines typically last 60,000 to 100,000 miles before replacement is needed.

Moving tires from one wheel position to another (front to rear, side to side) to promote even tread wear across all four tires. Front tires typically wear faster than rear tires on most vehicles. Regular rotation extends overall tire life and is typically recommended every 5,000 to 7,500 miles.

A system using sensors in each wheel to monitor tire pressure and alert the driver when pressure drops significantly below the recommended level. TPMS sensors can fail or need to be reprogrammed after a tire rotation or replacement. Cold Wisconsin winters cause tire pressure to drop, which commonly triggers TPMS warnings.

Draining and replacing the fluid inside the transfer case, which is the component in 4WD and AWD vehicles that distributes power between the front and rear axles. A common service interval is every 45,000 to 60,000 miles, or more frequently under severe-duty use like towing or off-road driving.

Replacing the automatic transmission fluid (ATF) to maintain smooth shifting and protect internal clutch packs and gears. Degraded ATF leads to slipping, hesitation, and eventually transmission failure. GM recommends transmission fluid changes based on driving conditions, with more frequent intervals for towing or heavy use.

An optional contract that extends repair coverage beyond the factory warranty period. Sometimes called an "extended warranty," though technically it is a service contract. Coverage, exclusions, deductibles, and transfer policies vary by plan. GM Protection Plans are backed by General Motors and honored at any GM dealership nationwide.

Adding small weights to the wheel/tire assembly to distribute mass evenly around the axle. Imbalanced tires cause vibration through the steering wheel or seat, uneven wear, and driver fatigue. Balancing is recommended whenever new tires are installed and periodically thereafter, especially after hitting a large pothole.

The fair market value of your vehicle immediately before a loss, taking into account depreciation, mileage, condition, and comparable vehicles in your market. Insurance companies pay ACV (minus your deductible) for total loss vehicles. ACV is often less than what you owe on your loan, which is why GAP insurance exists.

Recalibration of safety and driver-assistance sensors after a collision repair, windshield replacement, or wheel alignment. Modern GMC trucks and SUVs use cameras, radar, and ultrasonic sensors for features like lane keep assist, forward collision alert, and automatic emergency braking. Calibration ensures these systems work accurately after any repair that affects sensor positioning. Wheelers tip: Not all body shops have the equipment to properly calibrate GMC ADAS systems. Always verify before authorizing repairs.

A deduction applied by an insurance company when a replacement part is new and improves the vehicle's condition over the worn or damaged part it replaces. For example, if your tires were 50% worn and are replaced new after a collision, the insurer may charge betterment for the tire life gained. Betterment is common for tires, batteries, and certain mechanical parts.

The process of feathering new paint into adjacent panels to achieve a seamless color match. Even when paint is color-matched precisely, factory paint weathers and fades over time, so blending into neighboring panels helps disguise the repair. Quality blending is a sign of skilled body work.

A transparent layer of paint applied over the color coat that provides gloss, depth, and UV protection for the vehicle's finish. Most modern vehicles use a clear coat system. Scratches often penetrate only the clear coat, which can sometimes be polished out without repainting the panel. Deep scratches that reach the color layer require full paint repair.

Auto insurance that pays for damage to your vehicle resulting from a collision with another vehicle or object, regardless of who is at fault. Subject to your chosen deductible. Collision coverage is typically required by lenders when you finance or lease a vehicle.

Auto insurance that covers non-collision damage including theft, vandalism, fire, hail, flooding, falling objects, and animal strikes. Deer strikes in Central Wisconsin are a common comprehensive claim. Like collision, comprehensive is subject to your deductible and is usually required by lenders.

Protective coatings applied to the undercarriage and body cavities to slow rust and corrosion. In Wisconsin, heavy road salt use makes corrosion protection especially valuable for long-term vehicle preservation. GMC new vehicles include a factory corrosion warranty. Aftermarket rustproofing is available as a dealer-added option.

The dollar amount you are responsible for paying out of pocket before your insurance covers the remaining repair cost. For example, if your deductible is $500 and the repair costs $3,000, you pay $500 and your insurer pays $2,500. Higher deductibles lower your premium but increase your cost at the time of a claim.

The reduction in a vehicle's market value after it has been involved in an accident and repaired, even if the repair is flawless. Buyers typically pay less for an accident-history vehicle. If another driver caused your accident, you may be able to file a diminished value claim against their insurance for the lost resale value.

A network of body shops that have pre-negotiated agreements with specific insurance companies to handle claims directly. While DRP shops streamline the claims process, you always have the legal right to choose your own repair facility regardless of your insurer's recommendations.

An itemized document listing the parts, labor, and materials needed to repair collision or other damage. Estimates may be written by the insurance adjuster, the body shop, or both. An initial estimate often does not capture all damage until the vehicle is disassembled, which is why supplemental estimates are common.

Using hydraulic equipment to pull or push a vehicle's frame or unibody structure back to manufacturer specifications after a collision. Frame damage affects safety, handling, and how the vehicle crumples in future accidents. Proper structural repair requires computerized measuring equipment and knowledge of OEM repair procedures.

In body repair, OEM parts are made by GM to the same specifications as the original damaged parts. Aftermarket (non-OEM) parts are manufactured by third parties and may not fit as precisely or perform the same in a future collision. Many insurance policies default to aftermarket parts to control costs, but you may have the right to request OEM parts.

A repair technique that removes minor dents and dings without disturbing the original factory paint finish. A technician uses specialized tools to massage the metal back into shape from behind the panel. PDR is commonly used for hail damage, parking lot dings, and small door dents when the paint is intact. Wheelers tip: PDR is typically faster and less expensive than traditional body repair and preserves original factory finish.

Body shop shorthand for common operations on a repair estimate. R&I means a part is removed, the repair is performed on it or around it, and the same part is reinstalled. R&R means the original part is removed and discarded, and a new part is installed in its place. R&R typically costs more because it includes both labor and a new part.

The process by which your insurance company seeks reimbursement from the at-fault party's insurer after paying your claim. If the other driver caused the accident and you filed a claim with your own insurer, your company will pursue subrogation from the other insurance company. If subrogation is successful, you may also recover your deductible.

An additional repair estimate issued when hidden damage is discovered after disassembly that was not visible in the original estimate. Supplements are common in collision repair because many damaged components are covered by exterior panels. A legitimate body shop will document and photograph all supplemental damage before proceeding.

A vehicle is declared a total loss when the cost to repair it equals or exceeds a certain percentage of its actual cash value, which varies by state. In Wisconsin, a vehicle is typically totaled when repair cost reaches or exceeds 70% of ACV. The insurer pays you the ACV (minus your deductible), and takes ownership of the vehicle.

A fee charged by the leasing company (GM Financial) to set up a lease. It covers administrative costs and is typically rolled into the lease capitalized cost rather than paid upfront. It is a standard lease fee and is non-negotiable, though it can sometimes be included in the cap cost or paid at signing.

The true annualized cost of borrowing money, expressed as a percentage. APR includes the interest rate plus any lender fees, making it a more complete cost comparison tool than the interest rate alone. A lower APR means you pay less over the life of the loan. GMC frequently offers promotional low-APR financing on new models. Wheelers tip: Always compare the APR, not just the monthly payment. A lower payment stretched over more months can cost more total.

A large lump-sum payment due at the end of a loan term. Some financing structures feature lower monthly payments throughout the loan with a large final payment to cover the remaining balance. Balloon financing is less common on standard auto loans but appears in certain specialty financing products.

The buy rate is the interest rate a lender offers the dealer based on a borrower's credit profile. Dealer reserve (also called dealer markup) is the difference between the buy rate and the rate offered to the customer. Dealers earn income on the spread. Regulations limit how much a dealer can mark up the rate to prevent discriminatory pricing.

The agreed-upon value of the vehicle at the start of a lease, similar to a negotiated purchase price. A lower cap cost means lower monthly payments. Cap cost can be reduced by negotiating a lower selling price, applying rebates, or making a cash cap cost reduction payment at lease signing.

The most common type of consumer vehicle lease, in which the residual value is guaranteed at the start of the lease. At lease end, you simply return the vehicle with no financial exposure to market depreciation, as long as the vehicle is within mileage and condition guidelines. This protects you if the vehicle's actual market value drops below the guaranteed residual.

A numerical score (typically 300-850) calculated from your credit history by agencies like Equifax, Experian, and TransUnion. Lenders use credit scores to determine loan eligibility and interest rates. Higher scores unlock better APR offers. Scores above 700 are generally considered good for auto financing; scores above 740 typically qualify for the best available rates.

Lenders categorize borrowers into credit tiers based on their credit score. Prime or Tier 1 borrowers receive the lowest available rates. Subprime borrowers (typically below 620) are considered higher risk and face higher APRs. Wheelers works with multiple lenders to help a broad range of customers find financing options.

A comparison of your total monthly debt payments to your gross monthly income, expressed as a percentage. Lenders use DTI to assess your ability to take on a new loan. A DTI at or below 43% is typically preferred. Adding a large car payment to existing student loans, credit cards, or a mortgage can push your DTI too high for some lenders.

A fee charged by the leasing company when you return a leased vehicle at the end of the term and do not purchase it or lease another vehicle from the same brand. It covers the cost of inspecting, reconditioning, and remarketing the returned vehicle. This fee can often be waived if you re-lease or purchase another GMC.

Cash paid upfront at the time of purchase to reduce the amount financed. A larger down payment lowers your monthly payment, reduces interest paid over the life of the loan, and can help avoid negative equity. Trade-in value can serve as a down payment or be combined with cash to meet a required down amount.

The department within a dealership responsible for arranging vehicle financing and presenting optional protection products such as extended warranties, GAP insurance, tire and wheel protection, paint protection, and prepaid maintenance plans. The F&I manager works with multiple lenders to secure financing for customers.

Coverage that pays the difference between your loan payoff amount and your vehicle's ACV if the vehicle is declared a total loss or stolen. New vehicles can depreciate significantly in the first year, meaning you can quickly owe more than the vehicle is worth. GAP insurance eliminates the risk of owing money on a vehicle you no longer have. Wheelers tip: GAP is most valuable in the first two years of a loan, especially with a low down payment or long loan term.

A formal credit inquiry performed when a lender reviews your full credit file to make a lending decision. Hard pulls temporarily lower your credit score by a few points. Multiple auto loan inquiries within a short window (typically 14-45 days) are often treated as a single inquiry by scoring models, so rate shopping within that window minimizes score impact.

The length of time you have to repay an auto loan, expressed in months. Common terms are 36, 48, 60, 72, and 84 months. Longer terms produce lower monthly payments but result in paying significantly more interest over time and increase the risk of being upside down on the loan. Shorter terms mean higher payments but less total interest paid.

The ratio of your loan amount compared to the vehicle's value, expressed as a percentage. A loan of $35,000 on a vehicle worth $40,000 is an 87.5% LTV. Lenders use LTV to assess risk. High LTV loans (over 100%, meaning you are financing more than the vehicle is worth) may require GAP coverage or a higher interest rate.

The maximum number of miles you are permitted to drive a leased vehicle annually without penalty, as specified in your lease contract. Common allowances are 10,000, 12,000, or 15,000 miles per year. Exceeding the mileage allowance results in a per-mile overage charge at lease end, typically 15 to 25 cents per mile.

The interest component of a lease, expressed as a small decimal (e.g., 0.00125). To convert money factor to an approximate APR equivalent, multiply by 2,400. A money factor of 0.00125 equals roughly 3% APR. Lower money factors mean less finance cost built into your monthly payment. GMC Financial sets money factors monthly.

Pre-qualification is an informal estimate of what you may be able to borrow based on self-reported information, using a soft credit pull that does not affect your score. Pre-approval is a more formal conditional commitment from a lender after reviewing your credit, income, and debts. Pre-approval gives you a stronger negotiating position and a clear budget before shopping.

The original loan amount borrowed, not including interest. Each monthly payment is split between paying down the principal and paying interest. In early loan payments, a larger portion goes to interest. Over time, more of each payment goes toward the principal balance. Paying extra toward principal accelerates payoff and reduces total interest paid.

GMC often requires buyers to choose between a cash rebate applied to the purchase price or a special low APR financing offer. The better choice depends on the size of the rebate, the APR difference, your loan amount, and your loan term. Running the math on total interest paid vs. cash savings is the right way to compare both options.

When a dealership allows a customer to take delivery of a vehicle before financing is fully finalized and approved by a lender. If the lender does not fund the loan as structured, the dealer may ask you to return and sign revised terms. Also called "yo-yo financing" in problematic cases. Understanding this before signing protects you from surprises.