Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Good morning, there could be a few things causing this. I'm assuming the check engine light is on, have you had the diagnostic codes pulled?
Thanks, ***** ***** you describe it sounds like either the shop has the firing order wrong or the ignition timing is not adjusted properly. Setting the timing properly on this model can be tedious and if it's off will cause it to run terribly. If you'd like the firing order and timing info let me know.
Also feel free to reply back monday with the codes.
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Sure thing, which engine do you have?