Intermittently the drive train slips going into first or second. You can feel a "clunk" and surge as it goes into gear. Not sure if this is the transmission or a U-Joint. It happens after the car has warmed up, but only about 5% of the time. Not sure if I should wait until the problem becomes worst.
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2004 Chevrolet Impala
Answer #1Russ March 27, 2009, 14:09Master
I would suggest you have you power train control module scanned for fault codes. Any stored codes could lead to the cause of your problem. There may be codes stored in the system even though the service engine light may not be on. If there are no codes stored you may need to wait until you can duplicate the condition for your service technician. Is the fluid level OK?
Replyrbfort, March 27, 2009, 14:35Rookie
I had the car in for a full service and asked to change the transmission fluid. I hoped the problem would go away. At that time it was just a minor slip I would feel from first to second. Since then, there are times when it is a very pronounced clunk, but the problem goes away. The transmission level is good.
Answer #2Visitor, May 08, 2010, 06:14
My 05 did this. I took it in under warranty. First they replaced the tranny. Didn't work. Then they replaced the PCM Module. Didn't work. Then they had to open up the rebuilt tranny they put in and replace the solenoid(I think that what its called) and then it would sync up with the PCM. Car has been fine ever since. Don't think I needed the tranny....just the part in the tranny fixed. Good luck!