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2002 Cadillac STS Replace ECM

Tiny
JAMESCCOOK
  • MEMBER
  • 2002 CADILLAC STS
  • V8
  • FWD
  • AUTOMATIC
  • 15,000 MILES
Hello,

I have a 2002 STS, the system keeps throwing a miss code so I have problems getting a tag from the state emissions people. The dealer say they can not find any specific thing and offered to start changing stuff at my expense, but no garantee. One garage suggested the ECM because of the random codes, they also said I should get a used one so it would not have to be re-set by the dealer. My question is where are they located and should I have it re-set if I do installe a used one from e-bay.
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Monday, September 15th, 2008 AT 4:12 PM

2 Replies

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
I believe they are in the engine compartment, and they would have to be flash programmed by the dealer since they are VIN specific.
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Tuesday, September 16th, 2008 AT 4:20 AM
Tiny
JAMESCCOOK
  • MEMBER
  • 2 POSTS
Thanks I found it in the air filter box, go figure?
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Tuesday, September 16th, 2008 AT 9:38 AM

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