GMC Factory Warranty Explained

GMC builds trucks and SUVs that often work hard, from daily commuting to towing campers and hauling gear. Knowing what the factory warranty covers, and when it ends, helps you plan for repairs. Here's a plain-English look at GMC's coverage.

The basic numbers

GMC's new vehicle warranty has two main parts. Terms can vary by model year, so confirm details in your warranty booklet.

• Bumper-to-bumper coverage: 3 years or 36,000 miles, whichever comes first.
• Powertrain coverage: 5 years or 60,000 miles, whichever comes first.

Coverage starts on the vehicle's original in-service date. If you buy a used GMC that's still within those limits, the remaining coverage typically transfers to you.

Electric models, like those with high-voltage battery systems, may have separate coverage on battery and electric drive components. Check the booklet for your specific vehicle.

What bumper-to-bumper covers

This coverage pays for repairs caused by defects in materials or workmanship on most of the vehicle. On a typical GMC truck or SUV, that includes:

• Electrical systems, power windows and locks.
• Air conditioning and heating.
• Infotainment, cameras and driver assistance sensors.
• Steering and suspension parts.
• Fuel system components.

Today's trucks are packed with electronics, from trailer camera systems to power running boards. A factory defect in any of these is typically handled under bumper-to-bumper coverage while it lasts.

What powertrain covers

Powertrain coverage focuses on the parts that make the truck go:

1. Engine: internal parts, block, cylinder heads, oil pump and related components.
2. Transmission: case, internal parts and torque converter.
3. Drive system: front and rear axles, differentials, driveshafts and the transfer case on 4WD models.

For 4WD owners, the transfer case is an important part of this coverage. Our transfer case page explains how these components are typically treated by extended plans.

Common exclusions

GMC's warranty generally doesn't cover:

• Routine maintenance like oil changes, filters and fluids.
• Wear items such as brake pads, rotors, wiper blades and bulbs.
• Tires, which are covered separately by the tire maker.
• Damage from accidents, abuse, off-road misuse or environmental causes.
• Failures caused by aftermarket modifications like lift kits or performance tuners.

That last point matters for truck owners. A modification doesn't automatically void your whole warranty, but if it causes a failure, the related repair may not be covered.

Towing, heavy use and warranty repairs

If you tow or haul regularly, follow the severe-service maintenance schedule in your owner's manual. That often means more frequent oil and fluid changes. Stay within your truck's rated towing and payload limits, and keep records of all service.

Exceeding ratings or skipping maintenance can lead to denied claims on the engine, transmission or axles.

Towing also adds heat to the transmission, so pay attention to any transmission temperature gauge or warning message your truck provides. If you use your truck for a business, read the warranty booklet's section on commercial use, since some terms may differ.

Factory warranty work is handled by authorized GMC and GM dealers. When you bring the truck in, describe the problem in detail and ask for a copy of the repair order, even for no-cost work. If a problem keeps coming back, keep every repair order. A paper trail helps if you need to escalate the issue, and it shows any future buyer that problems were handled properly.

When factory coverage runs out

Trucks and SUVs often stay on the road well past 60,000 miles. Once your powertrain coverage ends, major repairs become your responsibility. Choices include:

• Setting money aside for future repairs.
• Buying a GM-backed extended plan through a dealer, if eligible.
• Comparing third-party vehicle service contracts, which are often available for higher-mileage vehicles.

See our GMC warranty page for more on coverage options for GMC owners.

Before your coverage ends, consider having the truck inspected. Any problem found while you're still under warranty can be repaired at no cost, while the same problem found a month later is yours to pay for.

How Warranty Wizards can help

We help GMC owners compare service contracts from third-party providers, including plans for trucks that tow or have 4WD. We'll explain what's covered before you buy. Request a free quote.