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  1. #1

    Default Throttle updates?

    Ok, still going through my shakedown questions on the Yukon. This one is around the throttle response. I've noticed that the response is a little weird/touchy off idle. The pedal itself is pretty stiff, and just off idle, like when starting from a stop, it's like there's a dip in the response. Push the pedal a little, get a little RPM rise in response, push a little more, no change in idle, push further, the RPM jumps and you're off.

    If I understand correctly my 2003 was the first year of fly-by-wire, and so I'm wondering if there are any updates that can be performed?
    2003 Yukon XL 2500 4wd

  2. #2


    I would say call your local dealership and ask them if there are any software updates that GM has put out.
    2002 Chevy 1500 Ex-cab Z71: 5.3L, auto 4, shorties, hi-flow cats, true dual 2.5" straight pipes, AirAid intake, TBS, Platinum plugs, 8.5mm wires, programmer, 3in w/ 33s, also has the composite bed

    2010 GMC 1500 Crew Cab Z71 w/ All Terrain package: 5.3L, auto 6, 2" Zone leveling kit, AirAid Jr. Intake Kit

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