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GM Tech (Cam)
GM Tech (Cam), Pontiac Technician
Category: Pontiac
Satisfied Customers: 29396
Experience:  GM Grand Master Technician 2007. 14 years experience.
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My 2004 Pontiac Aztek is shifting hard, and we just had the

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My 2004 Pontiac Aztek is shifting hard, and we just had the tranny flushed last week. The diagnostic check revealed nothing wrong except a sensor (which we replaced) and it is still doing it. Help!
Submitted: 7 years ago.
Category: Pontiac
Expert:  GM Tech (Cam) replied 7 years ago.
Welcome! Do you get a whining noise similar to that of a power steering system as well?
Customer: replied 7 years ago.
No, I haven't noticed a whining noise.
Expert:  GM Tech (Cam) replied 7 years ago.
OK, harsh shifting is caused by a high pressure situation. These transmission are known for having issues with the pressure control solenoid in the transmission. Often a new pressure control solenoid fixes the issue.
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