92 bonneville ssei Boost and PCM issues, please help. - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 02-19-2009, 11:07 PM   #1
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Default 92 bonneville ssei Boost and PCM issues, please help.

My car is Throwing Codes 56 and 57, 56 is an issue with the PCM and 57 is and issue with the boost control, any one have any ideas as to what this could be or a way to solve it?
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Old 02-20-2009, 10:17 AM   #2
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Without going and looking up the codes ourselves..can you please list the description as it appears you have looked it up.

Since you mention one being a pcm code, I'd be inclined if it does read that way to swap the pcm frist and see if the boost issue clears, although I don't remember any codes that are specifically pointing to a pcm as the issue.
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Old 02-20-2009, 12:40 PM   #3
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56 quad-driver module #2 circuit
57 boost control problem
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