The 4WD transfer case encoder motor position sensor or the selector switch may fail causing the service 4WD message to be displayed. Fault code(s) stored in the transfer case control module will be of assistance in determining the exact fault causing the message to be displayed.
Resources for the Repair and Maintenance of your Chevrolet Avalanche 2500
Chevrolet Avalanche 2500 Models:
Chevrolet Avalanche 2500 Problems
Popping Noise From Muffler Heat Shield
Exhaust & Emissions --
Verified
The muffler heat shield may become loose on the muffler causing a rattle or popping noise. Our technicians tell us there is a kit available from GM to correct this problem.
Check Engine Light Due to Gas Cap Issue
Exhaust & Emissions --
Verified
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
Stalling or Low Engine Idle Speed Due to Dirty Throttle Body
Engine --
Verified
A dirty throttle body may cause a lower than normal idle and possible stalling condition. Performing a throttle body service will commonly correct this concern.
Check Engine Light Due to Restricted Secondary Air Injection Check Valve
Exhaust & Emissions --
Verified
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.
Chevrolet Avalanche 2500 Recalls (Recent)
Tire and Loading Information Labels Are Innacurate
Body, Interior & Misc., March 31, 2006
RepairPal Expert Overview:
The tire and loading information label on the driver's side door frame may be inaccurate. A misprinted label could lead to overloading of the vehicle, which could possibly lead to tire failure and a crash. Owners will be provided with corrected labels and installation instructions. At customers' request, a dealer can install the label for them. The recall began March 31, 2006. The GM recall number is 05109.
Rear Seat Belt for Smaller Passengers May Not Fit Correctly
Body, Interior & Misc., July 21, 2005
RepairPal Expert Overview:
The second row center seat belt routing may make it difficult to position correctly on smaller passengers. If the seat belt rides up to fit around the abdomen, the risk of internal injury is increased in a crash. Dealers will cut the guide loop, remove a portion of the loop, and the remaining sides should be folded over and secured with a retainer. The recall began July 21, 2005. The GM recall number is 05037.
Chevrolet Avalanche 2500 Recall 04V129000
Body, Interior & Misc., September 18, 2004
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 »Hydro-Boost Relief Valve May Not Function Properly
Brakes, June 18, 2004
RepairPal Expert Overview:
The hydro-boost housing relief valve bore may be out of specification. The seal may fracture as a result, which may reduce braking assist and slightly increase the steering effort while braking. Under certain conditions, more braking effort will be required to stop the vehicle. Dealers will replace the hydro-boost relief valve. The recall began June 18, 2004. The GM recall number is 04004.
Gear Shift Indicator May Not Illuminate
Drive Train, February 22, 2005
RepairPal Expert Overview:
Under certain conditions, the shift lever position indicator located in the instrument cluster may not illuminate. If the indicator does not illuminate, the driver may not know which gear the vehicle is in. This could result in the vehicle moving in an unintended direction, increasing the risk of a crash. Dealers will reprogram the instrument panel cluster to correct this concern. This recall is expected to begin on February 14, 2005. The General Motors recall number is 05023.
Chevrolet Avalanche 2500 Questions and Answers
danmon, 2002 Chevrolet Avalanche 2500, Anchorage, AK
while in the heater/defroster setting my fan does not go to high speed. at times in may kick in for a few moments then goes back down, what is possible problem? the fan switch or what?
danmon, 2002 Chevrolet Avalanche 2500, Anchorage, AK
i asked a question earlier about this being a possible problem with the fan speed switch. in the defroster or vent mode very little air flow on high. when turned to bi-level and recirrculating you ...
Visitor, 2002 Chevrolet Avalanche 2500, Sweetwater, TN
The dashlights goes out at different times and you have to tap on the dash to get them to come back on. also the heat and air sometimes has to be put on 3 before you can feel anything.
tawfiq52, 2002 Chevrolet Avalanche 2500, Ashton, IL
Hi I have avalanche 2002 2500 8.1 ... the auto transmission when change from gear to gear( from 3 gear to 4 gear ) i hear strong hit ( click ) ... what is the problem ?? Thanks
Visitor, 2002 Chevrolet Avalanche 2500, Reynolds, GA
My engine misses when it idle and when I drive it.So I tried changing the spark plus ,spark plug wires and the number 7 ignition coil still give me reading on number 7 cylinder when i check it with...
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Chevrolet Avalanche 2500 Reviews
good vehicle didnt think I would like it so much
stepped down from a 2500 suburban 6.0 and dont miss
it.
Almost indestuctable. Comfortable plus great ride.
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