Question about 2002 Chevrolet Monte Carlo
After my car is warm up for about 15 - 20 minutes, 1st and 2nd gear auto shifts, shift very hard,, like a thud.. there is no slippage in etc, that would lead me to believe the the tranny is okay.. i thought maybe a dirty tranny filter etc,, changed all that and no difference.. is it some kind of engine setting, relay etc..
Sounds like a transmission modulator. Its on the back of transmission with the vacuum line running to it.
Check to see if you have the vacuum undone or broke on intake or trans
Posted on Nov 24, 2008
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Posted on Jan 02, 2017
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