1995, But Still Has ODB II?
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RE: 1995, But Still Has ODB II? - 3/15/2008 1:46:21 AM
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WolfPack
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From: Raleigh, NC
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Yep. OBD1.5. It's OBD1 system with OBDII plug as I understand it. Either way I know it makes it real tricky to do anything with the OBD system!
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2000 Blazer 4d LS 4x4 - 265/70/15 General Grabber AT2s - Hunter Brush Guard - Surco Roof Rack with IPF 868s - 1.5'' Shackle + Tbar - 2'' BL
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RE: 1995, But Still Has ODB II? - 3/15/2008 2:32:14 AM
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Taymacjack
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from what i understand, its the s-10s that are the odbI.5. I guess the blazers/jimmys are odbII
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RE: 1995, But Still Has ODB II? - 3/15/2008 6:34:38 AM
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swartlkk
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Not true. Early builds that have the OBD1 connector are OBD1. Later builds that have the OBD2 connector are a mix of OBD1 and OBD2 referred to as OBD1.5. The systems in a '95 were not truely OBD2 compliant as it was.
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RE: 1995, But Still Has ODB II? - 3/15/2008 4:46:57 PM
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tx_marez_tx
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my brothers 95 sonoma is like that. he went to advanced auto when he first got it (already knowing about this "issue") and told them he needed an OBDII actron code reader for his truck, they asked him what year it was so he told them. then they swore up and down that he needed an OBDI reader and in the end wouldnt sell it to em. so he then went to o'reillys and got a reader/programmer for 10 bucks less than just a reader from advanced lmao
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RE: 1995, But Still Has ODB II? - 3/15/2008 6:35:29 PM
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Taymacjack
Posts: 518
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From: Auschwitz, Oregon
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quote:
ORIGINAL: tx_marez_tx
my brothers 95 sonoma is like that. he went to advanced auto when he first got it (already knowing about this "issue") and told them he needed an OBDII actron code reader for his truck, they asked him what year it was so he told them. then they swore up and down that he needed an OBDI reader and in the end wouldnt sell it to em. so he then went to o'reillys and got a reader/programmer for 10 bucks less than just a reader from advanced lmao
see that was what i heard...the 95 blazers with vinW need ODBII reader..
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1995 GMC Jimmy 4x4X2 (I need a outside spare tire carrier...wanna trade for the inside version?)
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RE: 1995, But Still Has ODB II? - 3/15/2008 6:42:23 PM
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swartlkk
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Some OBD2 readers can read the OBD1.5 computer. The plug is the same, but most readers do not have the proper programming to pull the codes from this system. Check with the manufacturer of the scan tool that you are looking at before making the purchase. Most manufacturers have a help hotline that can be called.
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RE: 1995, But Still Has ODB II? - 3/15/2008 8:10:22 PM
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Taymacjack
Posts: 518
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From: Auschwitz, Oregon
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quote:
ORIGINAL: swartlkk
Some OBD2 readers can read the OBD1.5 computer. The plug is the same, but most readers do not have the proper programming to pull the codes from this system. Check with the manufacturer of the scan tool that you are looking at before making the purchase. Most manufacturers have a help hotline that can be called.
Really, all im looking for is someone to tune my pcm! I feel caught in between obdI and odbII!
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1995 GMC Jimmy 4x4X2 (I need a outside spare tire carrier...wanna trade for the inside version?)
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RE: 1995, But Still Has ODB II? - 3/15/2008 8:14:53 PM
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swartlkk
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Because you are. Programming wise, you aren't either OBD1 nor OBD2. It is a mix. The fact that it was only one year on many GM vehicles means that it isn't common.
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RE: 1995, But Still Has ODB II? - 3/15/2008 8:18:20 PM
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Taymacjack
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dang.why do 95's have to be so difficult?
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1995 GMC Jimmy 4x4X2 (I need a outside spare tire carrier...wanna trade for the inside version?)
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RE: 1995, But Still Has ODB II? - 3/15/2008 11:56:23 PM
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tx_marez_tx
Posts: 31
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From: Yuba City, CA
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quote:
ORIGINAL: swartlkk
Some OBD2 readers can read the OBD1.5 computer. The plug is the same, but most readers do not have the proper programming to pull the codes from this system. Check with the manufacturer of the scan tool that you are looking at before making the purchase. Most manufacturers have a help hotline that can be called.
I dont really know for 100% sure if my brothers is OBD1.5 tho. from what the dealer is telling us the previous owner got tired of the same issue the OP is having so he yanked the engine and pcm out of 97 jimmy. so in theory, it SHOULD be OBDII. neither one of us will really know for sure until we yank his engine for a 350 swap. we do know that it was an original w code engine, both the one from his sonoma and the one from the jimmy.
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RE: 1995, But Still Has ODB II? - 3/16/2008 6:58:31 AM
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swartlkk
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Well now that changes things completely. If you have a stock motor and PCM in a '95, you are OBD1.5. Go changing components out and all bets are off. I don't believe it is a simple swap though.
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RE: 1995, But Still Has ODB II? - 3/16/2008 7:53:23 PM
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tx_marez_tx
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From: Yuba City, CA
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quote:
ORIGINAL: swartlkk
Well now that changes things completely. If you have a stock motor and PCM in a '95, you are OBD1.5. Go changing components out and all bets are off. I don't believe it is a simple swap though.
No, I would imagine it wasnt. Apparently the guy knew what he was doing though because if it IS in fact the engine/PCM out of a 97, then it runs perfectly. The reader reads/corrects/erases codes as it should with an OBDII system, but still. We wont find out anything for sure untill the motor is yanked and all that good an happy BS.
On a side note, would there be any major differences in the underhood components that would be effected by the OBDII change over? Maybe we could get to lookin around under his hood and sniff out a rat or something. Regardless its only got 2 payments left and then its gettin parked and prepped 
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RE: 1995, But Still Has ODB II? - 3/17/2008 5:25:00 AM
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tx_marez_tx
Posts: 31
Joined: 2/8/2008
From: Yuba City, CA
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well, that makes things so much less complicating.. 
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