Hi, my 1999 chevy silverado 1500 6 cylinder extended cab shifts really hard from 1st to 2nd gear after its been driven a while, whether its hot cold outside makes no difference. It seems like after its been driven for @ 20 minutes it starts acting up. If I pull over and shut the truck off and turn it back on the problem goes away for a bit but will usually return after 10 minutes or so. It will run me 115.00 smackaroos just for an estimate. Any help would be very much appreciated.
u need to have the system tested for trouble codes, but u most likely have a defective trans 1-2 shift solenoid. to replace this u will need to pull the trans pan off the solenoids are attached to the valve body, also check the trans connector for water or corrosion.
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