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  1. W

    Won't start issue

    Went out this morning and my 99 Yukon SLT with the 5.7 vortec won't start. It acts as if it's starving for fuel. It'll run for about 5 seconds and then surges and dies. I tested the fuel pressure, it remains a constant 60psi. I'm assuming the spark is ok since it'll fire for a few seconds. I'm...
  2. W

    Upgrading exhaust

    Well folks, tax time is quickly approaching and I'm looking to upgrade. I'd like to concetrate on the exhaust for my 99 Yukon SLT 4wd and was hoping to get some opinions. My ultimate goal is to improve the overall efficiency. Before I go diving into the system, I had a few questions first...
  3. W

    HVAC mode door actuator

    I recently purchased a used 99 Yukon. Got it home and realized the air through the vents is not changing. I purchased a new actuator (one close by the gas pedal) and it's still not working. The blend door is working just fine, I can move it by hand. However, the actuator only moves a tiny bit. I...
  4. W

    Part number needed for HVAC

    My blend door actuator(the one that controls which vents the air comes out) is not working in my 99 Yukon. I'd like to replace it with an ACDelco, but seeings how there's like 4 different actuators; I'm confused as to which one to go with. Does anyone have the correct part number or schematics...

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