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2003 Cadillac CTS Problems

RepairPal has identified the most common problems with the 2003 Cadillac CTS based on complaints from actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.

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9
Known Problems

The steering wheel position sensor may fail, resulting in the service stability message being displayed.

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.

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

The rear axle pinion seal may leak causing fluid loss and possible internal rear end damage. Replacing the faulty seal will commonly correct this concern. Some 2005-2007 models have been recalled for this issue.

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»

The front and rear light bulbs are prone to premature failure. Our technicians tell us that the front bulbs can be very difficult to replace.

Brake fluid can become dirty and may cause problems with the hydraulic system parts in the brake system.  We recommend flushing the fluid at least every 60,000 miles.

Extended life coolant may become contaminated and require cooling system service before the recommended 100,000 miles.