The dealer replaced my ECM module with a rebuilt one and new codes are coming up. They are also stating that I need my shift linkage replaced.the car has 174,000 miles. Should I just junk the car ?
SOURCE: 82 Cadillac ECM wiring diagrams/ troubleshooting
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).
SOURCE: i have codes p0008 and
Both of these are easily replaceable, and should take care of the problem.
SOURCE: ECM replacement for an '05 Cadillac CTS 3.6L
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.
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SOURCE: 1995 Cadillac ETC has hard shift (all gears work)
yes change fluid. if that dosnt work buy new shift solinoids. and replace them. also check all the wiring from transmission to pcm and from conector to solinoids when u take the pan off. just disconect the solinoids. and use a digital multimeter innva brand put it on continuity and touch wire after wire till it beeps indicating wiring is touching . some will beep because thay are still conected and would have to remove transmission to disconect them. i just had this exact problem on my 94 sls . i replaced solinoid a-b and did a fluid change and checked the conections going to the transmission. and it runns good now
SOURCE: 1991 deville idling very ruff
Hi you should change the coolant temp sensor this is a white sensor on top of the intake and is part ot the computer system.
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