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#1
03-08-2005, 08:28 AM
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OBD 1.5? is it 1 or 2?
i work with a mechanic thats says that he has never heard of OBD 1.5 and that their is no such thing. he sid that if its a mix then its OBD2. he siad that if i could come up with some paper work proving that their is then he will beleave me but other wise not. can anybody show me some paper work proving it or a paper from GM would be best. any help is helpful.
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95 jimmy. Vortec V6. 4.3 liter CPI. ,2.5" catco cat, 2.5" cat back with flowmaster muffler split rear., 40 street series, 2 12" audiobahns in custom box,K&N CPI intake system. 71 Mustang coupe- project car. stock 302 with Cobra intake, holley 650dp, afco racing radiator, headman headers, msd distributor, 2.5" from the headers.C4 tranny with shift kit, Mach 1 body lay out. 90 cav, 2.2 tbi, gas getter. 99 chevy s10 zr2, 6" lift, duel exhaust. 5 speed. 
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#2
03-08-2005, 09:10 AM
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Re: OBD 1.5? is it 1 or 2?
ODBI.5 was the transitional odbi spec chevy came out with in 95... The ODBI.5 still has the ECM under the dash... If you have ODBII your ecm will be under the hood (actually it's the 1st revision of the ODBII spec... It will also say the revision on the core support)..
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  95 s10 Blazer, EGR Mod, ZQ8 Steering box mod, 99 Center console shifter mod and more... See everything at www.pghconsulting.net/teal
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#4
03-08-2005, 08:43 PM
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Re: OBD 1.5? is it 1 or 2?
so is he right in it being OBD1 or 2 only?
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95 jimmy. Vortec V6. 4.3 liter CPI. ,2.5" catco cat, 2.5" cat back with flowmaster muffler split rear., 40 street series, 2 12" audiobahns in custom box,K&N CPI intake system. 71 Mustang coupe- project car. stock 302 with Cobra intake, holley 650dp, afco racing radiator, headman headers, msd distributor, 2.5" from the headers.C4 tranny with shift kit, Mach 1 body lay out. 90 cav, 2.2 tbi, gas getter. 99 chevy s10 zr2, 6" lift, duel exhaust. 5 speed.
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#5
03-08-2005, 09:28 PM
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Re: OBD 1.5? is it 1 or 2?
Actually yea, it is OBDI if the computer is under the glove box.
VCM-A were in 1995's and was a stripped down OBDII. VCM started in 1996+ and was fully OBDII compliant.
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1995 Factory Blazer Service Manual for sale, PM if interested.
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