Took the PA to get the codes pulled.... - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 12-18-2006, 10:17 PM   #1
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Default Took the PA to get the codes pulled....

I took the PA to get the codes pulled finally and the guy told me that neither one of the scanners could retrieve codes from it. He blammed it on a communication error between the computer and the port but I think its the scanners he was using or the user. I will take it to the stealership soon and let them do it.

How easy are the PCMs to go bad in these cars? Alot of my issues seem to be due to a bad PCM and I've been told (assuming that the scanners he was using were correct) that not being able to retrieve codes is a sign of bad PCM. Any ideas?
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Old 12-18-2006, 10:22 PM   #2
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The 94 and 95'* have an OBDII connector but are OBD1 (or 1.5?) inside, Not all OBDII scanners can read them. Personally I would try getting it read for free from an Autoparts store (Advance Auto, Autozone...) before spending money at the dealer. If they can't do it then maybe consider the dealer.
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Old 12-18-2006, 10:26 PM   #3
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I've tried all the part stores in town and no one can help me. Thats why I took it to this shop today....not having very good luck with this thing.
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Old 12-19-2006, 12:39 AM   #4
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The 94 and 95 use an OBDI protocol in the PCM but have an OBDII cable. Most parts stores plug in the connector that fits under the dash, (OBDII) and find the computer will not communicate. The scan tool or reader must have OBDI capability, be properly configured, and have the correct cable. A good shop should be able to help you. Certainly the dealer will, too. Maybe there is a BC member with an Actron 9110 or 9145 near you. Both of those tools will read the hybrid 94 and 94 PCM.
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