Erratic Shifting of the Automatic Transmission on Pontiac Aztek

The transmission pressure control solenoid may fail causing erratic shifting. Our technicians tell us that partial dis-assembly of the transmission is necessary to replace a failed pressure control solenoid.

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Average mileage: 133,500 (80,000–175,000)
Drive Trains affected: AWD, FWD
5 model years affected: 2001, 2002, 2003, 2004, more2005
14 people reported this problem
4 people shared problem details
2003 Pontiac Aztek- AWD135,000
Vehicles transmission is shifting hard around 2800-4000 rpm's.
2004 Pontiac Aztek- AWD138,000
Shifts hard between 2nd and 3rd haven't gotten to fix it yet.
2003 Pontiac Aztek- AWD120,000
Shifts very hard. Thinking Pontiac Aztec is junk
2005 Pontiac Aztek- AWD80,000
Dull "thud" or "thump" when shifting through lower gears. No lights came on - just took it to a shop that hooked it up and ran codes - they said my transmission is shot.
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