Which parts fail
Components named in complaints (engine, cooling system, oil leaks, timing chain, exhaust).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2002 Chevrolet Avalanche 2500 owners, lightly cleaned up (personal details are redacted by NHTSA).
2002 Chevy Avalanche 2500 with 8.1 engine dies without warning at driving speeds. The battery light comes on, after the vehicle shuts down, but no check engine light and no warning whatsoever. The vehicle just shuts down. When this happens there is no power steering and no brakes for this 7000 pound vehicle. Sometimes, once pulled over and shutting everything off and trying to restart it will restart, sometimes taking up to 10 minutes of trying to crank it intermittently before it will restart. It has done this, off and on, at random intervals over the years I have owned it. I have read on the internet others from who have the same problem and most likely solution seems to be the crankshaft position sensor which some say has been recalled on the 2001 model engine for the silverados, but cannot find anything for the same 2002 engine, which is the same engine. …
4 times now my vehicle has stalled with no warning or any indication of anything wrong with the vehicle I.e. Warning codes, lights, or symbols. There has always been plenty of fuel in the tank. It happened to me this morning on the way to work traveling at about 65 MPH after finishing a curve in the road. The engine died for about 2-3 seconds and then it restarted by itself. The other day my daughter and I were coming back from the dr. And I had just made a left hand turn from one busy road to another and it completely stalled on me. I had to stop in afternoon traffic and after about a minute and completely turning the key off and putting it into park it finally started. I talked to the service writer at quality Chevy and he told me that many of the same trucks have been coming in and having the crank position sensor replaced. …
While driving down the road my 2002 Chevy Avalanche 2500 8.1l engine would shut off. This was happening 4 - 5 times on a daily basis depending on how far I had to drive. The last time this happened I was driving on the highway with my son in the truck and the engine shut down leaving me with limited ability to safely get into the break down lane. Thus is why I ended up getting stuck in the middle of the highway. I had it towed to a dealership whom later replaced my " crankshaft positioning sensor ". This incident occurred on June 13, 2009. I have spoken with several other owners of the same vehicle all of which have had the same issue. From what I understand there was a recall for the same problem ( NHTSA campaign id number: 07V521000 ), with the same motor that was in the 2001 Chevy trucks. What is being done about this issue involving the 2002 vehicles?
02 Avalanche 2500, engine just stops running while driving. Speed doesn't make a difference. It just dies and I have no power brakes,no power steering. The has been getting worse and is very dangerous to myself and others in traffic around me. It May take up 5 minutes to restart now. 2 Chevy dealers say they can't find any problem codes and I can't afford to pay for unneeded parts for trial and error repair. Please help get this problem dealt with. I know there are other owners of the same model, year of this vehicle have same problem. It has been know about for some time that the 2002 Avalanche 2500 8.1 liter engine has this problem. It is also known that replacing the crankshaft position sensor will cure it. This should be a safety recall item by GM before someone gets killed in traffic!!!
2002 Chevy Avalanche 2500- none problem with crank shaft sensor failing. My vehicle stalled in the middle of traffic. I was almost hit from behind. This has happened several times. Upon research I learned that this is a common problem with this vehicle and that Chevy is aware but has done nothing. Someone is going to be killed or hurt if this is not communicated. It has been reported many times- see web site www.chevyavalanchfanclub.com/cafcna/index.php?topic if you just search Chevy Avalanche engine stalling you will find all of the posts. Many people start by changing their battery, replacing their fuel pump and filter, replacing the air filter but the problem persists. Please address before someone is killed. It is dangerous for a vehicle to stall like this.........
Sometimes my 2002 Chevy Avalanche 8.1 will not start. I lock car again with remote fob, unlock and usually it starts. Sometimes it takes several attempts at locking, unlocking before it will start. Now vehicle stalls with no warning, no power brakes, steering etc. Does this at random speeds without notice or any apparent consistency. This has happened on the freeway at high speeds and is very dangerous. To restart I must try and get pulled over safely, lock and unlock truck with fob and hope it starts. Sometimes will do after once, sometimes after several attempts. Not really sure the fob resetting of security system is the difference or it just happens to start. When are they going to fix this potentially fatal problem???
The first time this happened I was going home from work on the freeway. I was going 65 MPH and my engine died I had no power steering and the brake pedal was very hard to push. I was able to put my truck in neutral and restart it. The second time the engine died I was sitting at a red light and it shut off. The third time it happened I was going home from work, just got off the freeway and stopped at the red light. When the light turned green I made a left and was going to the next light to make a right and the engine died. I tried to put the brakes on, but they were very tight and I had no power steering. I had to fight to turn the wheel and just made the turn without hitting the other traffic.
8.1l 2002 Chevrolet Avalanche engine stalls at speeds of 1 to above 40mph and fails to restart immediately. This engine shut-off happens on a regular basis while operating the vehicle. This a very dangerous situation as you lose all power to steering and stopping the truck. You have to coast to a stop, adding to your chances for an accident. Local dealer can not find a problem, but looking at your website, a similar problem resulted in a recall for model years 2001. That campaign number was 07V521000. It seems very odd that local Chevrolet dealers are unaware of the previous year recall or have an understanding of the potential problem. Only your website seems to know about this issue.
Engine died while driving 60 MPH on the interstate in snowy conditions on 2 lane portion in heavy traffic. By the time I coasted to a stop with no power steering or power brakes I was on an overpass with nowhere to pull out of traffic, so ended up blocking one lane of traffic for about 2 minutes. OBD ii code reader showed no code errors. Replaced fuel filter. Did not fix problem. After checking NHTSA site as well as others on the internet found it might be the ckp (crankshaft position sensor). Took it to dealership where their diagnostic tool verified it was the ckp. Quoted part and labor to be $300 - $500. Saving up money for repair.
Tl contact owns a 2002 Chevrolet Avalanche 2500. The contact took the vehicle to a repair shop and the mechanic stated that the crankshaft position sensor failed. The crankshaft position sensor was replaced. The total cost for parts and labor was $1,035. The manufacturer will be notified. The failure mileage was 81,600 and current mileage is 83,600. Updated 05/26/09 the consumer stated the engine stalled on 3 different occassions and he was unable to restart it. When the engine stalled, the power steering and hydro boost brkae system failed to operate. Updated 05/28/09.
Engine complaints in other Avalanche 2500 years
Frequently asked questions
How common are engine problems on the 2002 Chevrolet Avalanche 2500?
NHTSA has 31 complaints about the engine & cooling of the 2002 Chevrolet Avalanche 2500, 52% of the model year's 60 complaints. The component named most often is engine (9 mentions).
Is there a recall for 2002 Chevrolet Avalanche 2500 engine problems?
No. NHTSA lists no engine & cooling recall for the 2002 Chevrolet Avalanche 2500. 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 2002 Chevrolet Avalanche 2500 engine problems start?
Half of the complaints with a recorded mileage happened before about 80,000 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.