1992 Chevy Cavalier How do you replace the ECM in a 1992 Ca

Tiny
IRONRING1
  • MEMBER
  • 1992 CHEVROLET CAVALIER
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 180,000 MILES
I was wondering how one would replace the ECM in a 1992 (VIN 4) Cavalier. In my Haynes manual, it talks about a PROM unit, and shows it under a removable flap on the ECM case, but I cannot see any such flap. Is there a PROM in the ECM for this car that needs to be put in a new ECM, or can I just swap in a different ECM?
Saturday, May 3rd, 2008 AT 12:27 AM

1 Reply

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Usually the new ECM does not have the PROM in it
and you have to remove it from old ECM
if I recall correct the ECM have two screws you remove
( the access cove to the PROM

if you have a (used) ECM
you can just swap them
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Sunday, May 4th, 2008 AT 6:50 AM

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