Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

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hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
119,060 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2003 Chevrolet Avalanche drivetrain problems

drivetrain problem

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2003 Chevrolet Avalanche Owner Comments

problem #4

Aug 252014

Avalanche 8-cyl

  • 200,000 miles


I was driving approximately 15 to 20 mph down a hill that was curvy and all of a sudden my truck completely shuts off as I was driving down the hill and almost went into a ditch because the truck just shut off while in drive and luckily I was quick enough to put it in neutral so I could steer it away from the ditch and I turned the ignition over and luckily it turned on while in neutral otherwise I would of crashed into the ditch. Then it shut off again about 30 seconds after and luckily I was able to put it in neutral again so I could steer and coast down the hill because it wouldn't start up the second time when it all shut off. I was stranded at the bottom of the hill near a light so I tried to start it again and it would keep trying to turn over but wouldn't start again. I was stranded in the middle of the road and had to call aaa to tow my Avalanche to my house. This could of killed me if I wasn't quick enough to figure out to put it in neutral to be able to steer. There should be a recall on whatever made this happen and I still don't know what is wrong with it because it happened late last night and I was looking for recalls and it doesn't show anything on this.

- Bonney Lake, WA, USA

problem #3

Apr 022013

Avalanche 8-cyl

  • 137,000 miles
Transmission began making a low whirling noise and now slips and chugs. No towing or 4-wheeling beatings. I have taken very good care of this vehicle. I love my Avalanche but now the rear wheel bearing are going as well!!!

- Attleboro, MA, USA

problem #2

Apr 172013

Avalanche 8-cyl

  • 77,242 miles
I noticed a spray on the back of my Avalanche. I checked nuder the vehicle and noticed a small puddle of fluid which appeared to be transmission fluid. I checked the fluid level and it was near empty. I added fluid and when I used the vehicle it ran ok, but when I stopped it left a larger puddle under the vehicle. I drove my vehicle for a little while and when I checked again it was leaking still. I crawled under the vehicle and saw that it was leaking from where it connects to the engine or axle. (not sure what its called). I have read several complaints about Avalanche having bad transmissions. Most were around the same mileage. I cannot afford to fix my vehicle, and since I noticed it now it may just need a new seal, but where the transmission is leaking from it is expensive.what help can I get, this is my only vehicle my family and I own. Also when I start my Avalanche, sometimes the starter will stay on and I have to turn the key off and restart it. It appears the ignition or starter is defective. Any help would be appreciated..thank you!!

- Lajara, CO, USA

problem #1

Jan 202012

Avalanche 8-cyl

  • 62,000 miles
I have had several issues with my 2003 chevorlet Avalanche Z71 only 62,000 miles. My problems started around 8,000 miles with the rear brakes going bad. I have replaced the front and rear brakes four (4) times since I have owned it. The ABS speed sensors have been replaced once and need replaced again. The speedometer is stuck at 120 mph, the U joints have been replaced and now the transmission has gone out. I feel that chevorlet should fix these problems under a warranty/recall.

- North Royalton, OH, USA

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