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Problems for specific Cadillac DeVille years:

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Newest reported Cadillac DeVille problems

 

Reported by Papagiglio for the Cadillac DeVille

under the front left fender/bumper area, there is a electric pump that pushes air into the catalytic converter. It runs for about 45 seconds when you start you car and once in a while there-after. The bearings went out in mine and I tried to repair it, but ended up replacing it. After 8 months, the new one failed. The GM dealer warrantied it and I replaced it again, which now has stopped working again.

1 Report
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Reported by puttytat and 2 others for the Cadillac DeVille

Just started last week. This warning has always lit up if I make a sudden stop, but then goes away. Last week it did not go away and now stays on all the time, even though the coolant level is fine.

3 Reports
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Verified for the Cadillac DeVille

An ignition coil may fail causing one of the cylinders to misfire. Each of the two banks of cylinders has its own coil assembly. If one ignition coil fails the coil assembly for the corresponding cylinder bank must be replaced.

32 Reports
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Verified for the Cadillac DeVille

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

21 Reports
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Verified for the Cadillac DeVille

The EGR valve may stick open, causing a rough idle and/or the Check Engine Light to illuminate.

32 Reports
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Verified for the Cadillac DeVille

The torque converter clutch (TTC) may stop working due to an internal transmission failure. The Check Engine Light will illuminate if this occurs. Our technicians tell us the transmission will require dis-assembly to correct this concern.

86 Reports
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Verified for the Cadillac DeVille

The crankshaft position sensor may fail causing the engine to stall intermittently, the Check Engine Light may or may not illuminate.

85 Reports
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Verified for the Cadillac DeVille

Failure of the catalytic converter can result in illumination of the Check Engine Light.

19 Reports
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Verified for the Cadillac DeVille

Water may be drawn into the secondary air injection (AIR) pump causing the pump to fail and the Check Engine Light to illuminate. Our technicians tell us there is a kit available from General Motors to relocate the air intake for the pump which should prevent future damage from water intrusion.

19 Reports
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Verified for the Cadillac DeVille

Illumination of the Check Engine Light may be the result of a loose or worn gas cap.

2 Reports
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Verified for the Cadillac DeVille

Illumination of the Check Engine Light can be caused by a loose or worn gas cap.

26 Reports
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Verified for the Cadillac DeVille

The powertrain control module (PCM) can fail causing stalling, and various engine and transmission drivability concerns.

7 Reports
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Verified for the Cadillac DeVille

An updated PROM (Programmable Read Only Memory) chip may be available for the powertrain control module (PCM). Check with your dealer.

8 Reports
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Verified for the Cadillac DeVille

This powertrain control module (PCM) may develop a fault with its electrical ground location at the front of the engine block near the starter motor.

10 Reports
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Verified for the Cadillac DeVille

The alternator may fail causing the battery to go dead, or an abnormal noise may develop. The dash warning light may or may not illuminate. A failed alternator will require replacement.

9 Reports
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