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Problems with 2011 Chevrolet Avalanche 1500 POWER TRAIN

On average, the 2011 Chevrolet Avalanche 1500 starts to “feel” problems with the POWER TRAIN and its various aspects after 22 019 miles.

Recently reported POWER TRAIN problems on 2011 Chevrolet Avalanche 1500

I was driving my truck at about 45 mph when the traction control light came on the dash and my truck suddenly went from 45mph to 20 mph and the motor began to miss fire and buck. if there would have been someone following me they would of hit me in the rearend due to the sudden slowing of my vehicle. *tr

I was in line at a drive through at burger king and as i pulled up to the cashiers window to pay for my food the engine started to accelerate. i put my foot on the brakes as hard as i could while the truck was shaking and lurching trying to go forward. i can't say for sure how high the tachometer was, but it seemed to almost peg for a few seconds while this was going on. finally i jammed the transmission into neutral and the engine returned to normal idle. i say jammed because it took great strength to get it out of drive. for about 10-15 seconds this truck was totally out of my control. i drove away and parked for a few minutes to gather myself as i was visibly shaken..i was thankful that no one was in front of me in at burger king or that i was not in a parking lot somewhere where someone could have been injured or killed. i had brought this vehicle in more than once to the dealer (rk chevrolet) and complained about the transmission not shifting properly and was always told they could not find a problem. after reporting this they decided to put a device to monitor the computer. i drove around with this for about 3 months and nothing happened and they said the data collected was inconclusive. since the truck had just went out of warranty they said they could not do anymore. this is totally unacceptable. *tr

When slowing down the vehicle surges forward even when brake is being applied. it does not appear to be related to engine surge as it does with sudden gear change as if the vehicle is speeding up from a stand still. this occurred as i was turning into a parking space which caused the vehicle to veer uncontrollably to the right (was making a left hand turn into parking space) and hit a brick column. it has also happened when coming to a stop and persons were about to walk across road scaring them and me! the vehicle continues to experience these same issues. dealership has not been able to fix though they did acknowledge that my vehicle was the only one experiencing this issue. *tr

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