idels rough when in drive, can a high idle make it run better?

Asked by Jan 09, 2017 at 01:42 PM about the 1997 GMC Sierra 1500 C1500 SL Extended Cab SB

Question type: Maintenance & Repair

Ill be at a stop light, the truck is warmed up and it will drop the rpms and run
rough, shaking the front of the truck. the truck is straight piped and wanted to
know if there is a way to raise my rpms to fix this(when it runs rough while at
idle i put it in neutral and it goes away due to higher rpms)

1 Answer

73,155

You may just need a good tune-up. Scan the vehicle for codes to see what pops up.

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