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1999 Cadillac Escalade Reset computer chip once a NEW motor

Tiny
RA64THOMAS
  • MEMBER
  • 1999 CADILLAC ESCALADE
  • V8
  • AWD
  • AUTOMATIC
  • 103,000 MILES
My husband recently bought a brand new motor from Advanced auto parts and he installed it himself. Once he completed the installation, the truck turns over but it will not start. It may be because the analog on-star has been deactivated because they no longer monitor on-star for models that are older than a 2006, I believe. Anyway, we need to know how to resolve the computer, or reset the computer on the escalade.
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Tuesday, March 31st, 2009 AT 11:25 AM

3 Replies

Tiny
JAMES W.
  • MECHANIC
  • 2,395 POSTS
Your "on-star" system shouldn't keep the engine from starting. What is missing, spark, fuel pressure injector pulse, or all of the above. Please advise.
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Tuesday, March 31st, 2009 AT 1:47 PM
Tiny
RA64THOMAS
  • MEMBER
  • 2 POSTS
If a new motor has been installed, isn't there something that has to be done to the brain box and if so, what? I didn't mean the on-star itself cause it is no longer available in 1999 vehicles.
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Tuesday, March 31st, 2009 AT 2:32 PM
Tiny
JAMES W.
  • MECHANIC
  • 2,395 POSTS
All of the acquired memory in the ECM is erased when you disconnect the battery. The ECM is starting out like it's brand new. As long as all the sensors are connected everything is the way it was originally, the new motor should start right up.
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Tuesday, March 31st, 2009 AT 7:46 PM

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