Cadillac STS Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Cadillac STS

The front turn signal and and daytime running light bulbs are prone to premature failure. Our technicians tell us that these bulbs can be very difficult to replace.

A loose or worn gas cap could be cause the Check Engine Light to illuminate.

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.

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The engine may stall and fuel may leak due to overheating of the electrical terminals in the fuel pump module, resulting in the melting of the flange material. Dealers will replace the fuel module and fuel tank jumper wiring harness free of charge to resolve the concern.

The tire pressure monitoring system may not function properly and may not warn a driver of low tire pressure. Dealers will reprogram the remote control door lock receiver module free of charge to resolve the concern.

A rear suspension toe link could fracture and result in the rear wheels changing direction. This can cause loss of vehicle control. Dealers will inspect the right and left toe links and replace them as required free of charge to resolve the concern.

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Stay on top of the maintenance. Don't treat it like a comaro when its a Cadillac. Don't complain about the small things.. Can't speak for the other sts owners, but mine is fun to drive and looks "saf" (black on mat black) :) peace.

Great car. Drives and handles perfectly. Only complaint....Almost .No storage spaces.

my STS is a nice looking car but I have problems after problems one of the air suspension went out cost me 1000 dollar to replace it right now it's making noise. i beleive it's a electrical problems now. I will never buy another cadillac. it doesn't hold its value, The back bumper coming apart. and it hard to find someone to work on them beside the dealers.

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