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Can ECM units be swapped between cars of the same model?

Tiny
NUBIRA
  • MEMBER
  • 2001 DAEWOO 1.5I
  • 230,000 MILES
Think the ECM unit has gone bad and need to find out if I can swap between cars of the same mode?
Thursday, June 28th, 2012 AT 5:43 PM

5 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
If numbers match should be able. PCM rarely fail what is problem? Scanner won't comunicate? Have you tried re flashing?
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Thursday, June 28th, 2012 AT 6:34 PM
Tiny
NUBIRA
  • MEMBER
  • 6 POSTS
Air conditioner will not come on, air/heat fan inside auto will not come on, radiator fan does not come on. Mechanic has gone through complete electrical system, relays, connections, grounds are all good. Cannot find anyone nearby that has the software needed to re-flash the ECM. Going to take one out of a partscar and see if it remedies the problem. Any suggestions would be greatly appreciated.
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Friday, June 29th, 2012 AT 1:11 AM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Have a look at G100 left front fenderee if ground is good
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Friday, June 29th, 2012 AT 3:17 PM
Tiny
NUBIRA
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  • 6 POSTS
Checked under tire well, found the relay, but there is no ground there. There is a ground next to the nozzle to fill the windshield fluid and it is ok.
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Friday, June 29th, 2012 AT 8:59 PM
Tiny
NUBIRA
  • MEMBER
  • 6 POSTS
Put in new ECM, and same situation. No AC, no climate control fan, no radiator/collant fan, no rear window defogger. All relays have checked out. What could it possibly be? Any suggestions?
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Monday, July 2nd, 2012 AT 8:22 PM

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