When go down road between shift to second gear you feel it surge or hesitate when you give it gas.

5

Asked by Oct 05, 2013 at 09:20 AM about the 2006 GMC Sierra 1500 SL1 Extended Cab 4WD 6.5 ft. SB

Question type: Maintenance & Repair

Replaced plugs and wires. I do not know about water in fuel.  I put something for water in
gas.  It helped some, but it is still there.

1 Answer

35

It wouldn't be a problem with water in the fuel, It sounds like you could have a slight vacuum leak.

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