Vehicles with certain V6 engines may illuminate the Check Engine Light one or more of the following codes: P0011, P0014, P0021, P0024, P0341, P0346, P0336, or P0391. Our technicians tell us that some vehicles may require a powertrain control module (PCM) software update to correct this issue. Other vehicles may have excess camshaft end play on one or both cylinder heads which will need to be corrected using special procedures outlined by GM.
The Check Engine Light With Code: P0011, P0014, P0021, P0024, P0341, P0346, P0336, and/or P0391 on Cadillac STS
Average mileage: 94,724 (58,000–137,000)
Engine affected: 3.6L V6
12 people reported this problem
2008 Cadillac STS - 3.6L V6 137,000 mi, Visitor
The code p0008 is coming up
2007 Cadillac STS - 3.6L V6 86,836 mi, Visitor
codes P0014, P0024. To date no fix.
Check engine would come on and go off frequently. Took it back to the dealer and GM has them tearing down the engine to check the camshaft. Luckily it is under warranty