Does truck need tune up?

Asked by Guru57Q99 Feb 09, 2018 at 08:44 PM about the 1997 GMC Sierra 1500 C1500 SL Standard Cab LB

Question type: Maintenance & Repair

Engine runs real rough. 140k no. Tuned
70kago.

1 Answer

F_O_R answered 6 years ago

Why did you tune it up at 70K? It has been 70K since then.

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