1998 Cadillac CTS wont shift

Tiny
JAMESD46
  • MEMBER
  • 1998 CADILLAC CTS
Transmission problem
1998 Cadillac CTS V6 Two Wheel Drive Automatic 75687 miles

transmission will shift if I manualy shift it but wont do it on its on no codes when I put it in drive it acts if it is in overdrive
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Monday, December 10th, 2007 AT 3:55 PM

3 Replies

Tiny
MERLIN2021
  • EXPERT
Any codes? If not try going to an oil change place that can "flush" the tranny without dropping the pan.
Are there any codes? MIL on? If so try a tranny shop that can read the tranny codes for Caddy.
There is a problem called a TSB if there are codes and no shift between 2nd on some trany's and 3rd on others, The power supply curcuit to theTranny solinoid could be an issue! How long have you had the problem. If it's related to this TSB your instrument cluster will be going out!
Reference numbers=01-07-30-002E Date of issue: 9/23/2005. Covers all GM 2006

and prior passenger cars with 4L60-E, 4l65-E, 4L80-E, and 4L85-E transmissions. The solution is a new wiring haness and connector.
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Monday, December 10th, 2007 AT 3:58 PM
Tiny
BUZZSAW
  • MEMBER
Caddy didnt make a CTS that year, catera?

Do you have lights in the shifter?

There is a plug on the tranny that gets corroded, pop it off and check, it comes from the computer to the shift solinoids, other wise the shift solinoids need checked, dont waste your money on an tranny flush, fix the prob first
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Wednesday, December 12th, 2007 AT 10:15 AM
Tiny
MERLIN2021
  • EXPERT
Gee I thought I said that already.
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Thursday, December 13th, 2007 AT 2:45 PM

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