Vehicle looses power and brakes go out then dies, doesn't matter speed. If slowing down and press the brakes, the locks, lights, and security goes crazy. This is dangerous as it is in intersections and caution for collision. The vehicle has to be off for a time frame and restarts fine and can go. Happened when coming from ramp and in middle of road with semi truck coming down by us.

- Woodhull, NY, USA

4X4 transmission began locking and slipping. Developed a distinctive "clunking" sound when shifting between gears. Now most noticeable between second and third. Additional grinding sound occurs when driving. Noticeable at all speeds.

- White House, TN, USA

Drove off a parking lot at about 20mph and the transmission quit. Reverse works and all the low gears work out not on automatic mode.

- Castro Valley, CA, USA

Second Chevy 04 that transmission went in my first was a Tahoe now my Avalanche! all this money into vehicles and they don't last 50,000 miles or with my truck 75,000 what is wrong with Chevy transmissions? we traded Tahoe in for a Subaru and my next truck will not be a Chevy even though I have alot of money on my GM credit card towards a new vehicle!

- Keeseville, NY, USA

Vehicle transmission failed at 73,500 miles. Vehicle just stopped in middle of highway while traveling at approx 45 miles per hour. Subsequent rebuild by mechanic revealed that GM had installed incorrect valve body gaskets in the transmission, likely contributing to the premature failure.

- Berlin, NJ, USA

During acceleration (taking foot off acclerator stops noise) a grinding noise appears to be coming from rear axle or transmission. Noise is intermittent, occurs approximately 4-5 times per week. Have not been able to identify unique conditions that cause occurrence. Noise will generally only occur for a single acceleration and after it goes away, it is unknown when it will return.

- South Lyon, MI, USA