Question about 2003 Cadillac CTS
I have the same problem. The dealer has installed a new throtttle body, then a new ECM. I STILL have the same problem. The dealer has no ideas and now wants to charge me to see if my valve seals are leaking. Sure, after $2,400 I'm going to let you pull the top of the engine off to check my valve seals.
One mechanic (non-Cadillac) feels the battery ground wire is corroded and should be replaced so that's my next step.
Posted on May 25, 2011
The service idle control and ECM problem should be addressed. I would try a used ECM from the salvage yard.
Posted on Sep 02, 2010
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Posted on Jan 02, 2017
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