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Ask Dave Nova Your Own Question
Dave Nova
Dave Nova, Cadillac Technician
Category: Cadillac
Satisfied Customers: 19452
Experience:  ASE Master Certification. GM World Class Certification
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I HAVE A 2000 CADILLAC DEVILLE. TRANSMISSION WILL NOT SHIFT

Customer Question

I HAVE A 2000 CADILLAC DEVILLE. TRANSMISSION WILL NOT SHIFT INTO OVERDRIVE. 1st-3rd shift like a dream. HAD IT SERVICED (NEW FLUID AND FILTER) MECHANIC SAID THAT FOURTH GEAR WAS LAYING IN THE PAN), BUT I REALLY THINK HE DIDN'T HAVE A CLUE BECAUSE IT DID TAKE HIM 3 DAYS TO SERVICE MY CAR. ANY IDEA WHAT WOULD KEEP THE TRANNY FROM GOING INTO 4TH GEAR AND IF I DID LOSE 4TH GEAR CAN IT BE REPLACED OR DO I HAVE TO REBUILD THE WHOLE TRANNY?
Submitted: 7 years ago.
Category: Cadillac
Expert:  Dave Nova replied 7 years ago.
Is the check engine light on?
Customer: replied 7 years ago.
it came on for a maf or vaf sensor no tranny codes
Expert:  Dave Nova replied 7 years ago.
With no transmission codes, the problem is mechanical. This will require rebuilding or replacing the transmisison.
Customer: replied 7 years ago.

There was TSB on this in May 2001 do you know if GM has come up with a solution? Maybe the 4th gear band?