This usually happens after an aggressive start and then back off before your having too much fun.
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2012 Chevrolet Impala Question: Would the pressure control solienoid cause a delay in upshifting.A long delay?
Answer #1Greg's Orange Auto (14643 Answers) , Orange, CA - (714) 361-9386globalhelper August 05, 2013, 10:13Master
should be under factory warranty. what are the trans codes ?
Replyletemrun302, August 05, 2013, 13:57Rookie
I have not had it checked out by dealer service yet. My confidence in them is rapidly diminishing. They had my car for three days to track down an intermitant grinding sound in the front end and I finally went and got my car back because they would'nt even put it in the service bay because they had not heard the sound. I told them which side the sound was coming from and they still would not put a wrench on it.
Replyglobalhelper, August 05, 2013, 14:30Master
TRY ANOTHER SOURCE IF AVAILIBLE
Answer #2sdbforthewin July 15, 2014, 23:48Rookie
no. due to upgrades to the motor block (Variable Valve Timing, Direct Injection, Etc...) the power in the car's block and transmission is best found in the upper end of your tachometer.