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  1. #1

    Question My truck wont start

    I have a 1999 Gmc Sierra 4x4, ex cab, reg bed, with 170000 miles. The truck will turn over and run for about a second or two. If you try to press the gas pedal in that time it will die right away. I have tried a tune up that didnt work and then i tried changeing the fuel pump and it still does the same thing. It has been in Colorado its entire life. Can anyone help me with my truck?

    Since my post the other day i have changed the fuel filter and tried my old mass air flow sensor to see if that is my problem. The weather has been very nice and mild ever since my truck stoped working on 2/7/09. Well it still didnt work. and it was suggested to me to change my cap and rotor but this engine does not have those it is a coil over set up. Any other suggestions would be helpful.
    Last edited by dustintreibel; 03-12-2009 at 08:27 PM. Reason: New thing tried to get my truck running!

  2. #2

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    Sounds like you may have some clogged injectors or something in the fuel supply clogged.
    2008 GMC Sierra 2500HD Ex. Cab, Fire Red, 6.6L Duramax LMM Equipped with UTG Rocker Pods

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  3. #3


    Have you guys experienced warm temperature then cold temperature? If so, you might have gotten condensation in your gas tank, and then fed into your gas lines and then they froze up, leading to ice in the line restricting how much gas is going into your carburetor. Causing your engine to stall when your engine requires more gas.

    Just a thought?
    2002 Chevrolet Silverado 1500 z71 1985 Chevrolet Silverado k10 2006 Chevrolet Silverado 2500hd 6.6l LLY Duramax
    6.5" BDS Suspension Lift Edelbrock Carb & Polished Intake Manifold & Valve Covers NAPC Race Transmission & NAPC Built Transfer Case
    EFI Live Comp Cam and Valvetrain Snow Performance Methanol Injection
    35" Toyo Open Country Mud Terrain on 18" Ion Alloy 179's Headman Long Tube Headers and True Dual Exhaust FASS 150gph Titanium Series Pump
    AirAid Cold Air Intake with K&N Dry Filter & AirAid PowerAid Throttle Body Spacer 2" Suspension Lift 33x12.50r15 Tires EFI Live & AFE Stage 2 Intake
    Pacesetter Long Tube Headers with Cats Gone True Dual Exhaust FlowPro 3.73 Gears Yukon Grizzly Locker with Mag-Hytec Cover & Traction Bars
    NGK Iridium Tips & MSD Ignition Plug Wires Baja Spare Tire Holder 33x13.5 Hankook rt03 18" XD Rims
    Innovate LC-1 Wideband o2 Sensor x2 HID's all around LED taillights and 3rd brake light
    BDS Dual Steering Stabilizers Pioneer Double-DIN Touchscreen Navigation with Two 10" Subs under rear seat
    Electric Fan Autometer Pressure, Boost, and Pyro Gauges
    4.56 Gears Airlift Air Bag Suspension

  4. #4
    Jr. Engineer
    Join Date
    Jan 2009
    Rochester, MN


    There's about 100 things this could be. Maybe the MAF
    99 Silverado Z71 4.8
    2" Suspension lift (Add-a-leafs and leveling keys)
    Long tube headers with 3" offroad Y-Pipe
    Volant Cold Air Intake with Ram Air Intake Tube
    Jet Mass Air Flow Sensor
    Diablosport Predator Tuner

    Previous Truck:
    97 Suburban K1500
    3" Body lift
    2" Suspension Lift (Add-a-leafs and cranked up torsion bars)
    35" Yokohama M/T's
    K&N Intake
    Airraid Throttle Body Spacer
    Hypertech Programmer
    Dual Flowmasters

  5. #5


    replace your distributer cap and check your battery and altenator.

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