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Hello im in need of some help here, I just got a 1993 STS, and when driving it, It wont leave 1st gear It goes in to park and revise fine,no errors are coming up. can this be caused due to a wiring hardness problem? or somthing smaller or new tranny is needed?
March 22, 2009
I'm suprised no errors coming up. Make sure you have someone check your PCM and BCM for codes.
Automatic transmission: 4T60E transmissions may drop out of drive while cruising, shift erratically, or have no second, third, or fourth gear because of a bad ground connection for the shift solenoids. Poor grounds also allow wrong gear starts. (1991-93)
Recommend you go to a dealer and ask for them if you could access their bulletins for the correction.
Your solenoid pack may also be wiped out. GM's 4T60E's were notorious.
August 24, 2009