Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2005 Chevrolet Avalanche owners, lightly cleaned up (personal details are redacted by NHTSA).
The speedometer sticks at a speed and will drop to the 6 o'clock position. This is a know issue among owners but GM nor the dealerships are willing to acknowledge or fix it. This is the second issue with my vehicle that GM is not willing to fix or take responsibility. I will never purchase another GM vehicle again.
Speedometer stopped working completely. It had been working fine when I last drove it. But when I started driving within the next 3-4 hours I noticed it was not reading the speed at all. All the other gauges on the cluster were working properly. When talking to the dealership about this problem they stated it wasn't a simple fix and could cost me above $500, they couldn't give me an estimate of how much it would cost. .after reviewing the complaints listed on this website, this seems to be a manufacturers defect. Many other owners of this same vehicle have had the same complaint and its rare that it functions properly in any of the vehicles. Even though my vehicle is over the warranty period I believe that the manufacturer should stand behind their work and correct this problem. A recall is definitely in order.
Speedometer went out. Bought GPS to keep up with speed. Dealer would not fix problem. Then, oil pressure, water temp also stopped working. Come to find out, GM used defective stepper motors on instrument cluster from 02 - 07 I believe it was, not sure. I have had 1 speeding ticket and they tagged on wreckless driving for 20 MPH over limit. I have been a dedicated GM owner my entire life. Don't think I will by one again. Seems to me they would want to do what they can to keep there customers, instead, they are running them away. I have know more loyalty for them at this point. I have a 2005 Chevy Avalanche z71 absolutely love the truck but it has to go. Hummm...Toyota maybe, Dodge so many choices. Buy America, save America....bull crap. I'd better hush...
At approx 47000 mi traveling at 65mph a heavy thud in the engine compartment that sounded like the whole engine block had dropped out, was able to coast off road to a vacant lot. Transmission toast with damage to ring and pinion gears,never towed anything, city driving to work and home mostly.(47K) miles. Really? 3500$ repair. Next speedometer failure at about 53K miles, im either going 0mph or 120mph. Also have lost alot of backlighting on my dashboard instrumentation along with cd player. Seems the cd player cannot eject a non existent cd, just makes clicking noise and says check disc. Now at 59K miles im experiencing the popping front end sound when turning sharply in reverse, possibly suspension or a-arm related have not looked into yet.
Tl* the contact owns a 2005 Chevy Avalanche. The contact was driving at approximately 30 MPH when he noticed that the speedometer was giving an incorrect reading of 130 MPH. The vehicle was taken to the dealer for a diagnostic test. The dealer told that the contact the vehicle was not included in any recalls and therefore, he would have to assume all repair costs. The vehicle had not been repaired at the time of the complaint. The failure mileage was approximately 54,800. The current mileage was 55,434. Updated 05/06/10. Updated 05/10/10
Was driving and came to stop, my speedometer did not zero out. When I started to go it continued from where it was. I did not really know how fast I was going. Several stops and each time it did not zero. To get it zeroed I had to shut off engine and restart several times until it zeroed out. It has occurred several times this brings excessive wear and tear on the starter and battery. It could also be a very dangerous situation as you really have no clue on your correct speed. Vehicle: 2005 Chevrolet Avalanche.
Tl contact owns a 2005 Chevrolet Avalanche. While traveling 55 MPH the contact noticed that the speedometer suddenly stopped functioning. The contact stated that the manufacturer sent recall information regarding the failure to the dealers and not the consumers; therefore, he was unable to get the remedy repaired at no charge. The vehicle was taken to an authorized dealer but no repairs were made when the complaint was filed. The failure mileage was 65000 and the current mileage was 103285.
I pulled off on the side of the freeway to take a call. I started up my truck stepped on the gas to get back on the freeway and all of a sudden my speedometer went from 0 to the other end of the reading. It stayed there all the way home so I could not tell how fast I was driving. When I stopped, it started to go back down but as I would press the gas it would go all the way past the highest reading. It seems to get stuck now and then.
Tl* the contact owns a 2005 Chevrolet Avalanche. The contact stated that the speedometer and fuel gauge failed. The RPM gauges became stuck and the check engine warning light was illuminated. The contact took the vehicle to the dealer where it was determined that the instrument cluster failed and needed to be replaced. The vehicle had not been repaired. The failure and current mileages were 68,000.
While traveling on the interstate in my 2005 Chevy Avalanche I noticed that my speedometer read 90mph vs. 40/45mph. I pulled off the highway and placed the vehicle in "park" and the speedometer read 50mph while the vehicle was stopped. GM states that my vehicles VIN do not fall within the range of their "bulletin for recalls.
Electrical complaints in other Avalanche years
Frequently asked questions
How common are electrical problems on the 2005 Chevrolet Avalanche?
NHTSA has 21 complaints about the electrical system of the 2005 Chevrolet Avalanche, 30% of the model year's 71 complaints. The component named most often is instrument cluster/panel (12 mentions).
Is there a recall for 2005 Chevrolet Avalanche electrical problems?
No. NHTSA lists no electrical system recall for the 2005 Chevrolet Avalanche, though it has 3 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2005 Chevrolet Avalanche electrical problems start?
Half of the complaints with a recorded mileage happened before about 60,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.