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Check Engine Light Due to Engine Vacuum leak on Cadillac DeVille DTS

Problem Description and Possible Solution

The Check Engine Light may illuminate due to an engine vacuum leak from the intake manifold area.

Problem Data
RepairPal Verified
Average mileage: 73,080 (10,400–140,000)
5 model years affected: 2001, 2002, 2003, 2004, more2005
11 people reported this problem
Viewing 1 - 3 of 3 comments
check engine light came on.did diagnostic check and found out vacuum leak
i had this problem too
Intake Manifold leak. Plenum rupture. X8 seals. Cam sensor.Both crank sensors. Replacs all.