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  1. #1

    Default Crank but no fire

    Hello, I have an '01 Yukon 5.3 that recently started to give me problems. I recently replaced the knock sensors, spark plugs & wires, and fuel filter. After a test drive, thankfully in my driveway, it sputtered and died. Got the dreaded random misfire trouble code. Now it wont start at all, like it's not getting any fuel. (replaced fuel filter after this problem started btw). I can hear the pump prime when the key is turned on. I'm kinda leaning towards fuel injectors? My question is, if I try to test the pump pressure, is the fuel pressure release valve before or after the injectors?

  2. #2


    The valve is located on top of the fuel rail under the plastic vortec cover. Should be on the driver side of the motor.

    1995 Silverado 4x4
    6" BDS Suspension Lift-3" Body Lift-Add A Leaf in rear -Trailmaster SSV Shocks-Duel Steering Stabilizer Kit -AirAid Cold air intake-
    4.56 Gears with Detroit Auburn Locker-Pro-Comp Traction Bars with duel shocks-Aluminum Skid Plate Kit-38.5" x 16.5" Mickey Thompson Baja Claws-Constant Dropping fuel gauge

    2005 Yukon XL Jet Power Programmer, Bilstein Shocks, Bilstein rear springs, Helwig Anti-sway bars, EGR Window Visors, EGR Hood Shield, Denali Headlights, Headlight harness upgrade, GE NightHawk Bulbs, White Night Rear lighting system, Russell Braided SS brake lines, PowerStop Brake pads, PowerStop cross drilled and Slotted Rotors,
    2002 Silverado ext cab 2wd (Sold)
    2003 Yukon XL (Totaled)

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