1992 Cadillac Seville REPAIR CODES

JUNIORRICHARDSON

MEMBER
1992 CADILLAC SEVILLE
V8
FWD
AUTOMATIC
154,000 MILES

I'V BEEN GETTING THESE CODES ON MY CAR IO33, IO34 IO37 IO39 I KNOW ABOUT THE ECM, WHICH IS ALSO THEPCM ALSO I KNOW ABOUT THE ACP, AND THE SIR BUT I DONT KNOW ANYTHING ABOUT ANY (IO) CODES I DONT EVEN KNOW WHAT THE IO STANDS FOR CAN SOMEONE PLEASE HELP

Tuesday, August 18th, 2009 AT 1:50 PM

7 Replies

FACTORYJACK

MECHANIC
4,159 POSTS

They are instrument panel codes, all relevant to loss of data.
Code I033 Loss of SIR Data
Code I034 Loss of PCM Data
Code I037 Loss of ACP Data
Code I039 CCR Signal Fault

It is hard to say what the symptoms would be, and whether you would even notice the conditions for setting these codes, when they occur.

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Tuesday, August 18th, 2009 AT 10:36 PM

JUNIORRICHARDSON

MEMBER
36 POSTS

When the symptoms occur the fuel reading gauge, the battery amp gauge, and the temp gauge goes blank and have lines that look like this() across the instrument panel, also the heat will start blowing on high speed and wont turn off until the system starts working agian. Do you have a solution on how I might repair this problem

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Wednesday, August 19th, 2009 AT 11:19 AM

FACTORYJACK

MECHANIC
4,159 POSTS

I would speculate, and this is just a guess, but since the IPC is what is setting all the loss of data codes, it may be at fault. Are these the only codes, or are there others in other systems?

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Thursday, August 20th, 2009 AT 12:38 AM

JUNIORRICHARDSON

MEMBER
36 POSTS

No all the other systems donthave any codes stored in them. Also i'am not sure what IPC stands for but i'am guessing the instrument panel control if this is not correct please give me the correct meaning and how do I fix this problem

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Thursday, August 20th, 2009 AT 11:23 AM

FACTORYJACK

MECHANIC
4,159 POSTS

Instrument panel cluster. As I said, since the IPC is setting the data loss codes, it could be faulty. This is just a guess, since I can't put my fingers on the vehicle. It could be power supply problems, ground problems, terminal or connection faults. I can't guide you through all scenarios, especially without knowing the full history of the vehicle. If you choose to replace the cluster, be aware that it may require programming, or theft system learn, that only a GM dealer may provide.