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2003 Chevy Impala periodically rough shifting

2003 CHEVROLET IMPALA
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PHOENYX987
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  • 1 POST
Transmission problem
2003 Chevy Impala 6 cyl Front Wheel Drive Automatic

sometimes my tranny will slip when taking off from a stop. Also it will occasionally start shifting hard all the time then goes away. I have already changed fluid and filter. What's going on?
Feb 10, 2010 at 9:18 AM
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JACOBANDNICKOLAS
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It sounds like the trans control module. Has the check engine light come on? How many miles are on the vehicle?
Feb 23, 2010 at 12:45 AM
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PHOENYX987
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Thank you for answering my email, the check engine has not come on and there is a 100,000 on the vehicle.
Mar 4, 2010 at 5:56 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Based on your description, I recommend having the trans control module checked. It is what controls the trans. My only concern is the slipping on occation. At 100K I wouldn't expect the trans to be bad, but it does happen.
Mar 4, 2010 at 10:22 PM
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GUNKIE
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my 04 impala does the same kinda slams into gears when it warmed up
Apr 30, 2010 at 8:36 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Has the check engine light ever come on?
May 1, 2010 at 6:17 AM
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