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1990 Oldsmobile Cutlass

Tiny
TRUDYCASH
  • MEMBER
  • 1990 OLDSMOBILE CUTLASS
1990 Oldsmobile Cutlass

i lost the booklet "instructions" for GM code reader. I need the codes for 1990 olds cutless. I'm not sure where to search can anyone help the model #3123.
Friday, December 18th, 2009 AT 6:26 PM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
You don't needa code reader for that model car. 1990 is a OBD1 system. Just put a paper clip between a and b on the aldl, near the bottom of the dash. And turn the key on and count the flashes. It will like 1 flash then 2 then go to the next reading. Then go on the internet and type in gm obd 1 codes and it will tell you what to check.
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Sunday, December 20th, 2009 AT 7:58 PM

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