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1995 Chevy Lumina code reader plug has only 1 wire on it

Tiny
CAK1964
  • MEMBER
  • 1995 CHEVROLET LUMINA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 160,000 MILES
My code reader plug on the 95 lumina has only 1 wire hooked to it and no other visiable wires that go to it how many wire should there be or is there any other way to check I have a gm code reader plugs in to the port but nothing happens I think beacuse there is only 1 wire I think it is gray is someone could help I would be gratful thanks
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Monday, August 31st, 2009 AT 9:39 AM

6 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS


https://www.2carpros.com/forum/automotive_pictures/170934_95_lumina_data_link_connector_1.jpg



If your datalink connector looks like the above picture, you can ground terminal B, turn the key on, no further, check engine lite goes to flashing, you count the flashes to get the codes.

If that is a hybrid connector for the crossover years, I can't help you. My info shows more than 1 wire going to the data link connector? There might be a decal under the hood that says if your fully compliant, obd1 or 2.
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Monday, August 31st, 2009 AT 11:00 AM
Tiny
CAK1964
  • MEMBER
  • 3 POSTS
I was wroung about the 1 wire it has 2 wires. A & m that are the only 2 is there a way to check codes that way
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Monday, August 31st, 2009 AT 8:11 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
That may require a special code reader?
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Tuesday, September 1st, 2009 AT 9:13 AM
Tiny
04RAIDER
  • MEMBER
  • 2 POSTS
I just picked up a 1995 Lumina (Manufactured 12/1994) and the SES light comes on after driving for 5-10 minutes. I went to do the "jumper" trick to get it to flash the codes. It has the OBD1 connector as pictured above but only has 2 wires going to the A & M positions. I just wanted to let you know that I also have that problem and I'm interested to see an answer on this one on how to get it to flash the codes, or if there is a special reader?

Thanks,

dp
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Wednesday, September 9th, 2009 AT 10:19 AM
Tiny
CAK1964
  • MEMBER
  • 3 POSTS
Still looking for answers the first time the ses light come on. It would come on when I let off the gas after it was warmed up well I found the problem the egr port to the intake was pluged with carbon cleaned it out and never had a problem tell now the ses light comes on when it idles for a few minutes then I drive down the road it comes on then a few miles down the road then goes off and stays off as long as I drive down the road not sure what that is all about
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Wednesday, September 9th, 2009 AT 2:09 PM
Tiny
04RAIDER
  • MEMBER
  • 2 POSTS
That's wierd because I think that's what mine is doing. It comes on if I'm accelerating at a decent pace or if I was cruising on the freeway and then just let off the gas abruptly (like when I approach an on ramp or something) and then stays on until I turn the car off and restart it. I might try looking at the EGR and see if that helps.
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Wednesday, September 9th, 2009 AT 2:56 PM

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