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Service engine soon light is on

Tiny
VGILVEAR
  • MEMBER
  • 1995 BUICK GRAN SPORT
  • 3.8L
  • V6
  • 2WD
  • AUTOMATIC
  • 42,000 MILES
Requires obd1 tester. Does not have connector wires in top right only A no B so paper clip will not work. Has a m below A and a J on bottom row.
Wednesday, March 21st, 2018 AT 3:00 PM

3 Replies

Tiny
HARRY P
  • MECHANIC
  • 2,292 POSTS
If your connector is trapezoid shaped, then you have OBD 1.5. Most GM's in 1995 were this setup. It is an OBD 2 style connector, but the computer speaks OBD1. This means that you need a rather expensive scanner to get the codes from it. Find an older mechanic's shop. They will probably have a twenty year old SnapOn scanner that will do the job nicely. If you want to buy your own scanner, it will easily run you $200.00 for it.
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Wednesday, March 21st, 2018 AT 7:08 PM
Tiny
VGILVEAR
  • MEMBER
  • 2 POSTS
Thanks, first use full information have yet received. Will give this a try. Thanks again, Vern
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Thursday, March 22nd, 2018 AT 4:17 PM
Tiny
STEVE W.
  • MECHANIC
  • 13,367 POSTS
The older OTC Genisys, Tech 1, snap-on MT2500 brick (with the correct cartridge) and a few others will talk to the OBD 1.5 vehicles. They are a pain because they can set both the OBDI 2 digit codes AND the PXXXX codes used with OBDII You can still pull the two digit light flash codes if you have pins in 3 and 4 but many do not.
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Sunday, March 25th, 2018 AT 11:11 PM

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