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1994 Chevy Cavalier code retreval

Tiny
REDBONE
  • MEMBER
  • 1994 CHEVROLET CAVALIER
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 112,000 MILES
When I use a code key to access the computer, the check engine light should blink once then blink twice to access, my light won't blink at all.I have the key in the right spot. Why won't the engine light blink
Monday, November 10th, 2008 AT 5:53 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi:
Do you mean the ignition key? I believe you need to have a special tool to do that on a 94 cavalier. Stop at a nationally recognized parts store and have them do it. Most will do it for free.

JOe
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Saturday, November 15th, 2008 AT 12:26 AM
Tiny
REDBONE
  • MEMBER
  • 97 POSTS
I mean when I use a jumper wire and then turn the ignition to on the check engine light doesn't blink
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Saturday, November 15th, 2008 AT 6:11 AM
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,750 POSTS
Does the light come on steady with the key on engine off? You should be jumping termianal a and b of the diagnostic connector. Make sure the black wire has a ground because what you are doing is grounding the other wire putting it into diagnostics. I worked at gm during the nineties and dont recall having one not flash codes before but if yours does not you need to check the wire from the diagnostic connector to the ecm and make sure the wire is not broken or you will need to replace ecm.
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Saturday, November 15th, 2008 AT 6:35 AM

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