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P1527 Diagnostic Trouble Code Discussion for April 2005

Transmission Range To Pressure Switch Correlation

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Trouble Ticket Help Requests for DTC P1527
Help Request Posted
1999 Cadillac DeVille 4.6L No upshift VIN: 1G6KD54YXX
P1527: Transmission Range To Pressure Switch Correlation. Strange problem with this Deville. If you try to accelerate it will stay in 1st gear, rpms go to 3900-4000 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 se...
April 28, 2005