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1-8 of 8 Results
  1. CTS First Generation Forum - 2003-2007
    Okay I've been around the block a few times and I've built cars from the ground up before but this is my first interaction with a Cadillac. It's a 2003 Cadillac CTS 3.2 l luxury sport rear wheel drive The onboard diagnostic computer in the stereo told me it had a bad IAC. But I've been told...
  2. CTS First Generation Forum - 2003-2007
    Anyone run into a code showing on the built in code reader (2003 Only) but not any other OBD-II scanner/reader? I've tried 3 standalone readers (apparently I collect them) and all are missing a code. The same code... P0504h - Brake Switch A/B Correlation My brake lights do work properly but...
  3. CTS First Generation Forum - 2003-2007
    What's the small hose coming from the bottom of the throttle body then connecting to a thin plastic line going back between the upper and lower intake manifold on an '03 3.2? I thought it was a vacuum line but it's dripping antifreeze. I've replaced the hose twice but it still drips. 😕
  4. CTS First Generation Forum - 2003-2007
    Hello I own a 03 Cadillac CTS and it won’t start, yet the dashboard lights and radio do turn on and work fine but the engine won’t start. Have tried everything I could think of check the stared it was ok, battery ok, change the key switch, and it still doesn’t start. Does someone know what could...
  5. CTS First Generation Forum - 2003-2007
    All of a sudden, my radio sometimes won't turn on when I start my car. Sometimes it will turn on randomly while I'm driving, and other times, like right now, I've been in my car for a half hour with no luck. There are sometimes where I will mash buttons on the radio to hopefully get it to turn...
  6. 2003 Cadillac CTS

    LED Parking lights in headlight.
1-8 of 8 Results