2001 Pontiac Grand Am transmission jumps into geer

Tiny
AL WESTON
  • MEMBER
  • 2001 PONTIAC GRAND AM
  • V8
  • 2WD
  • AUTOMATIC
  • 50,000 MILES
One mechanic said that the computer regulates when the trans should shift and that we need a new computer but another mechanic never heard of this. Can you tell me the answer. Also not sure on the difference between automatic and manual trans---this car does not have a clutch--its your basic prndl thanks al
Saturday, October 24th, 2009 AT 8:45 AM

1 Reply

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Shifting is controlled by PCM, but that does not mean you need a new PCM.

If you are having shifting problems, it could be a shift solenoid, low fluid level etc.

Have a trans shop diagnosis problem, but check fluid level first.
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Saturday, October 24th, 2009 AT 10:07 AM

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