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OBDII??? Interesting find...???

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Old 05-16-2008, 05:32 PM
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Default OBDII??? Interesting find...???

Went to a local GM dealership to see if my dad'* friend was still working there as a master tech and to see if he could help us out, now he says it'* coils, but I digress...
He asked me what year and I told him prod. date of 4/94, so he searches around the dealership shop for a Tech 1 (I hope I can mention that name here) so we can possibly pull codes if they stored...after ten minutes, he finds it and the adapter he needs.
So out to the car we go, low and behold, he can't plug it in, has OBDII plug and pins. So he grabs the Tech 2, with the OBDII plug and plugs it in. Everything on the screen says it is a full OBDII system (early of course, so it wasn't able to give complete misfire codes), and he was floored. As 20+ years as a senior tech, he has NEVER seen a pre-late '95 Bonnie with an OBDII system. So he asked another senior tech, he looks at it and what the scanner was doing and asking, and was pretty much also surprised, but thought it may have been for California ordered car. Funny thing about that, the build sheet (which I have access to through another friend for GM) stated that the car was special ordered, from the factory, and dealer shipped and sold I believe in Kellogg, ID or Couer D'Alene, ID. (sorry, can't remember which one.)

Interesting, anyone have any thoughts on this subject, is this somewhat normal, from what I have read, it shouldn't be. I will be accessing the number on the PCM to compare it to what should be on the '94 SSEi Bonnies. Just thought I would share that.
Old 05-16-2008, 06:55 PM
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You have OBD 1.5. It'* OBD1 with OBD2 codes and a OBD 2 plug.

So, I'm guessing a Tech 1 should work with a OBD2 plug adapter.

94-95'* were all like that.
Old 05-16-2008, 08:41 PM
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He had the wrong adapter. This is old news for us. Correct tool, wrong cable.
Old 05-16-2008, 08:41 PM
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that'* kinda what I thought, judging by the tech posts...but it was just funny there...
Old 05-16-2008, 09:48 PM
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You shoulda asked.
Old 05-16-2008, 10:57 PM
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I did, but he swore that the whole setup was OBDII and was shocked. I just find it funny that a dealership didn't even know that much about it...lmao (then again, as he was saying, they don't see these in there anymore, and haven't for a long while...) He is an awesome tech though, and I do trust him with my baby! So if he and my dad both say coils taking a **** under load, i believe them, but the whole what OBD thing was just hilarous.

Oh well, at least he told me it is a solid car and in great shape and the only thing to watch is the early fires they had due to dripping oil out the back gasket (hmm, sounds familiar all of a sudden..lol) and that the motor is a great motor! That made my day admidst all of the problems with trying to get the ignition issue solved...
Old 05-16-2008, 11:04 PM
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Originally Posted by fastblkbeauty
the only thing to watch is the early fires they had due to dripping oil out the back gasket:
That'* not much of a concern on the Series I L67. It'* more of a concern on the SII L67, allbeit still not common.

I'd start looking around for a new mechanic. He'* proven he doesn't know much about L67s or OBD systems. :?
Old 05-17-2008, 02:58 PM
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Yeah, already figured that much out, kinda upsets me though, though he did tell me he didn't work on the cars too much, when the whole OBDI, I.5, II was in transition, he was working on the trucks, and just recently shifted his specialty. But it looks like i may have my hot little hands on a Tech 1 that should be able to read my codes, soon as I find an adapter to fit the plug. My dad just upgraded his computer and no longer needs his Tech 1 as his upgraded Tech 2 reads with the right adapters...hopefully I can find what I need, I would love to have that Tech 1 handy...lol

Thanks for the imput on this all, it was a real eye-opener.
Old 05-19-2008, 10:33 PM
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I had a 94 GMC Yukon 2 dr and finding the correct parts, no EGR valve #* would cross, the EGR purge solenoid had to come from an 88 pickup, and the 02 sensor had to come from a 96 Tahoe/Yukon. THe parts guys were like "WTF?", they had never seen this. AND the trans was just supposed to be a 700R4 with a TV cable but low and behold its a 4L60E which were introduced in 95 model year. I was the second owner at 84,000, so I doubt the guy had a bad trans and swapped in an elcetronic trans. And a fellow I work with has a 94 Bonne SE with the same OBDI/OBDII issue, I was looking at it for him and tried getting codes but I couldnt do the paper clip ground cause of the OBDII connector and my OBDII reader wouldnt connect. I told him to take it to the dealer. Thats when I figured GM was inbetween old and new stuff mid-90s so some vehicles are, excuse my French, bastardized.
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