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Re: 88 GMC Intermittently runs rough
Check codes with no scan tool instructions.
https://www.troublecodes.net/gm/
Edit
Here is a better site for checking codes:
https://www.chevytalk.org/fusionbb/s...php?tid/273660
I am Chevytech on that site too and have many old threads that can be searched for information.
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For those of you that are wondering why you are not getting replies to your thread:
Did you give the model, year, engine, fuel system type, and transmission information?
If it is modified from what came stock from the factory, let us know that too.
Last edited by ChevyTech; 03-16-2020 at 05:20 PM.
Reason: Add more
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