2003 Chevy Impala periodically rough shifting

Tiny
PHOENYX987
  • MEMBER
  • 2003 CHEVROLET IMPALA
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?
Wednesday, February 10th, 2010 AT 5:18 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
It sounds like the trans control module. Has the check engine light come on? How many miles are on the vehicle?
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Tuesday, February 23rd, 2010 AT 8:45 AM
Tiny
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.
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Thursday, March 4th, 2010 AT 1:56 PM
Tiny
JACOBANDNICKOLAS
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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.
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Friday, March 5th, 2010 AT 6:22 AM
Tiny
GUNKIE
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My 04 impala does the same kinda slams into gears when it warmed up
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Friday, April 30th, 2010 AT 3:36 PM
Tiny
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Has the check engine light ever come on?
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Saturday, May 1st, 2010 AT 1:17 PM

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