why would my truck be rough idle and wants to die in gear

Asked by Feb 13, 2016 at 07:49 AM about the 1997 GMC Sierra 1500 C1500 SLE Extended Cab SB

Question type: Maintenance & Repair

It started after I changed the donut flange gasket off the manilfold

1 Answer

222,755

Recheck your work, you might have forgot to plug in an electrical connection, or knocked something loose. Check your vacuum lines.

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