The daytime running lights are prone to burning out. Our technicians tell us that the light sockets may show signs of heat damage but usually are OK. Always be sure to use the correct replacement bulb for the best life expectancy. The new bulb recommendation for 2000-2003 models is #4114K (trade number).
Resources for the Repair and Maintenance of your 2002 GMC Sierra Denali
2002 GMC Sierra Denali
2002 GMC Sierra Denali Problems
Units with 4 wheel disk brakes may develop at situation where the park brake does not hold as it should. Our technicians tell us this can be caused by worn park brake shoes located inside the drum section of the rear brake disks. The worn shoes should be replaced and properly adjusted to correct this issue.
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
A poor electrical ground under the battery tray may cause the ABS warning light to illuminate. Our technicians tell us that cleaning and properly securing this ground and also the main ABS ground on the frame rail below the drivers door may be necessary.
One or both secondary air injection check valves may become restricted causing poor air flow resulting in illumination of the Check Engine Light. It is often recommend to replace both check valves even if a fault code is set for only one bank of cylinders. Replacing only one valve may result in a return trip to the repair shop.
2002 GMC Sierra Denali Recalls (Recent)
Summary: ON CERTAIN PICKUP TRUCKS AND SPORT UTILITY VEHICLES, THE GALVANIZED STEEL TAILGATE SUPPORT CABLES THAT RETAIN THE TAILGATE IN THE FULL OPEN (HORIZONTAL) POSITION MAY CORRODE, WEAKEN, AND EVENTUALLY FRACTURE. IF BOTH CABLES FRACTURED, THE TAILGATE WOULD SUDDENLY DROP AND STRIKE THE TOP SURFACE OF THE REAR BUMPER.Learn more »
Summary: ON CERTAIN PICKUP TRUCKS EQUIPPED WITH MANUAL TRANSMISSIONS AND BUILT WITH EITHER PBR PARKING BRAKE SYSTEMS OR TRW PARKING BRAKE SYSTEMS, THE PARKING BRAKE FRICTION LININGS MAY WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.Learn more »
Summary: CERTAIN PICKUP TRUCKS AND SPORT UTILITY VEHICLES MAY EXPERIENCE UNWANTED ANTILOCK BRAKE SYSTEM (ABS) ACTIVATION. THIS CONDITION IS MORE LIKELY TO OCCUR IN ENVIRONMENTALLY CORROSIVE AREAS. THIS RECALL WILL BE LAUNCHED IN THE "SALT BELT" STATES OF CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MARYLAND, MASSACHUSETTS, MAINE, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WEST VIRGINIA, WISCONSIN AND THE DISTRICT OF COLUMBIA ONLY.Learn more »
Summary: SOME 2WD AND 4WD PICKUP TRUCKS, CONVERTED TO EITHER DEDICATED OR BI-FUEL COMPRESSED NATURAL GAS (CNG) FUEL USAGE, WERE ASSEMBLED WITH A THROTTLE CABLE THAT CAN CONTACT AND RUB THROUGH THE FLEXIBLE PRESSURIZED FUEL LINE CREATING A PINHOLE LEAK OF NATURAL GAS TO THE ATMOSPHERE.Learn more »
2002 GMC Sierra Denali Questions and Answers
where do I add the steering fluid for my all wheel drive??
How do you change the fan motor?
quadrasteering problem occurs all the time when turning at slow speed such as a parking lot...forward or reverse...2 wheel steering or 4 wheel steering...the differential or axles shudder and clang...
how do you replace the rear drive quadrasteer w/ a standard sierra rear end? I would like to dismantle the 4 wheel steer and replace w/ better fuel efficient rear drive.
2002 GMC Sierra Denali Reviews
I've had my 2002 Sierra Denali for 3 years and the truck has served me well. The 6.0 V8 will run forever as long as you maintain is regularly. I did buy an extended warranty on my truck that came in handy. The rear dif was making noise, but the warranty covered a full tear down of the dif and quadrasteer and rebuild with new factory parts, done at a quality GM dealership. The front wheel bearings on these trucks tend to need replacing as well around 150 as the sensors in them go bad causing abs malfunction. All these problems aside, the truck is something you will rarely find the same build quality anymore. The quadrasteer works amazing towing trailers and parallel parking tight spots. 13.5 mpg is rough, but we'll worth the luxury this vehicle brings. I will run mine until she dies!
Mine has been a great truck! Love the quad steer, The brakes are quite weak.
rear steer is crap ,, when it goes bad ,it goes real bad vary expencibe to fix and no one kniows how to fix them
2002 Sierra Denali. Overall great truck. Engine is has plenty of power. Love the AWD and Quadrasteer. 82K miles on it now. Avg MPG is 12.7 :( Only problems I've had is the brakes are complete crap, replaced orignal pads at 70k and its difficult to find the right parts at any parts store. Front rotors are from the yukon and rear is from a sierra. Rear brakes are a nightmare. Not exactly sure of the problem, but the pads are shot on the inside of the rear (outsides are fine). Front rotors (aftermarket) are shot as well warped. Going to replace all calipers, flush brakes, replace all rotors with performance rotors and install performance pads and see how the brakes are. Replaced original tires at 65K; installed Bridgestone Dueler APTs handles great in the snow and rain. Installed K&N Filter Charger (big HP gain as stock air intake is restrictive) and new exhaust system (Cat back). Replaced power steering pump and Battery (2 times lived in AZ for 2 years). Rear Tonnaeu cover shot at 75K miles and the Side steps are rusting (IL winters). Had some minor issues with the interior dealer replaced drivers seat (cover) and the center console as the skin of the plastic seemed to have melted off in the Phoenix heat.
The A/C is great frigid cold A/C and the heater is inferno hot, also love the seat warmers.
Truck tow great, like the firm button for sagging with a heavier load.
Wish the truck was a crew cab and had a 6 speed tranny.