Question about 2003 Cadillac CTS
My ECM was replaced on my car. It is still in the shop and they told me the starter is going out because it doesn't start all the time. Could that possibly be from the ECM and not the starter.
If the ECM was replaced properly it have no efffect on the engine starting. If the starter is turning the engine over then it's doing all it was designed for. I think I would get it out of that shop. I smell a rat over the internhet.
Posted on Oct 27, 2012
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Posted on Jan 02, 2017
the plugs are the problem, they become unable to ignite all the fuel when in idle, so that they get wet and won't give any spark until dry. try to replace them. if there's no difference the problem is at the admission system(fuel pump maybe)
Posted on Mar 13, 2010
if a new ECM had blown shortly after replacement, the problem is likely to be in power wiring to ECM.
Check all battery wiring to the BCM/ECM for bad connections and shorts, (shorts, corrosion etc.), and test all voltages to ecm.
Check for short to ground in ckt491 (Orange wire), check for Open or Short to Ground in ckt 526 (Brown wire).
Posted on Jul 07, 2008
u have a leak in the heater core the oily smell and mist is anti freeze sounds like a small leak because usually u would have a wet floor if it was large -two choices check and repair as necessary the core or can use an additive with a stop leak they usually work well on small leaks
Posted on Dec 14, 2009
I was reading through the replacement procedure for the ecm in your vehicle.Here`s what I found.you may use a used ecm but it does have to be reprogrammed to your vehicle and it can only be done at the dealership.This I know because I worked at a Cadillac and G.M. dealership.I worked at a dealership for 16 yrs.The other thing is you don`t` need the vehicles vin that the used computer came from.The only one you need is your vin number.This number has all the information that your car is equipt with.The used ecm will have the other vehicles fuel continue password so the programming will put in the fuel continue from your vehicle.The other thing that needs to be programmed is the engine oil life and the transmission oil life or they revert to 100%.Then an idle relearn procedure will have to be performed.The only thing any other shop can do is get the codes or clear the codes.But they can not program a computer.Only the authorized dealerships have this software.Hope this helps clear up your any questions.Good luck.
Posted on Dec 22, 2009
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