2003 Cadillac CTS Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2003 Cadillac CTS
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2003 Cadillac CTS ProblemsThe Check Engine Light With Code: P0011, P0014, P0021, P0024, P0341, P0346, P0336, and/or P0391
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 passenger seat sensor may fail causing the SRS (airbag) light to illuminate. This problem has turned into a recall on some vehicles. Please contact you local dealer to see if your particular car is included. For more information on this recall, please click here»
On the 2003's there is a plastic panel that covers the backup lights...it's about 1'X 3'...I guess it's common for these to just blow off. We just purchased the 03 CTS with only 41000 miles and had driven it for about 2 weeks when we noticed the panel was gone,exposing the backup lights. We choose to fix it right instead of trying to find a replacement at the salvage yard (since it seems to be design flaw because they about non exsistant). S...
2003 Cadillac CTS QuestionsCharged battery will not stay charged good battery alt also reads good (1 answer)
Changed rear 0-2 sen finally got check engine light off now having the battery being pulled down . Now these codes come up -P1779 P1780 P1795 P0121 P0221 P0700 P1779 P1780 P2176
When I try to turn on my car it makes like a choking noise then it turns off I have replaced the alternator the timing belt the serpentine belt and still nothing then I checked the throttle body and I noticed there was oil all in there how do I fix this problem
Would that still be heater core problem. When ac is on.
2003 Cadillac CTS RecallsThe Engine May Stall
The weight on the key ring and/or some other jarring event may cause the ignition switch to move out of the run position, turning off the engine and increasing the risk of a crash. In the event of a crash, if the key is not in the run position, the air bags may not deploy as expected. Dealers will provide two replacement key rings, and vehicles with slotted keys will receive key inserts to correct this concern. Note: Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring.
The owner's manual does not explain the child restraint anchor location symbols for the lower universal anchorage system. This does not meet the Federal Motor Vehicle Safety Standard. Owners were sent supplements to the owner's manual explaining the location symbols in the vehicle. The recall began August 18, 2003. The GM recall number is 03039.