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Chevy 03 z71 transmission problem

Does not shift from 1st to 2nd.

Chevy 03 z71 transmission problem

Postby hallra [OP] » Apr 03 2012, 12:37am

transmission does not shift out of 1st gear unless you let off the gas. It does shift into all gears if you let off the gas before each shift. I put some seafoam conditioner in it, thinking it would help. Drive about 20 miles, but no change. Any ideas??
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Re: Chevy 03 z71 transmission problem

Postby ASTE25ASTE25 is online! » Apr 03 2012, 10:42pm

Do you have a check engine light on? I think the shift solenoids in those are known to go bad. You can have someone with a diagnostic scanner (not a code reader) hook up to it and check to see if they are doing what they are supposed to be doing.
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