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1999 Cadillac DeVille 4.6L No upshift
Posted to GM Driveability on 4/28/2005 4 Replies

Strange problem with this Deville. If you try to accelerate it will stay in 1st gear, rpms go to [...] no upshift and it just hangs there doing 3900 rpms at won't shift or gain any more rpm. Testing a like vehicle, engine will run to 5800 and shift into second...

4 Replies Received (View Replies)

  Related Documents & Media  1999 Cadillac DeVille

 
Message Closed w/FIX

car Vehicle Data

1999 Cadillac DeVille

VIN 1G6KD54YXX
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsNo Upshift
OccursAlways, on Accel
Misc.4.6 (Y) Northstar

Trouble Codes

P1527Transmission Range To Pressure Switch Correlation
Message Closed w/FIX

car Vehicle Data

1999 Cadillac DeVille

VIN 1G6KD54YXX
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsNo Upshift
OccursAlways, on Accel
Misc.4.6 (Y) Northstar

Trouble Codes

P1527Transmission Range To Pressure Switch Correlation