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  1. S

    Stabilitrac and traction control lights on and charging issue

    2010 GMC Yukon XL 5.3 vortec..... Just this last weekend had to replace oil pickup tube o-ring and remove and block oil pressure bypass on oil filter for low low oil pressure, 2 months? before that had to unstick lifter for #4. Got all that sraightened out and went for a test drive today. 30+psi...
  2. S

    low oil PSI when passing

    2010 GMC Yukon XL, 5.3...... Yesterday I made a round trip from Dallas to Memphis, 4 times along the way while accelerating to pass someone my oil pressure dropped from the normal 20 PSI to the point the oil light came on and I had to pull over and shut it down. Was only 1/2 qt low on oil...
  3. S

    cyl 4 misfire

    Back again. Got a cylinder 4 misfire, been trying off anf on to fix it. No luck so far. Have changed all coil packs, plug wires, plugs, I do have spark at cyl 4.No knocking like a stuck lifter. Should I swap a couple of fuel injectors around or is there a way to check the wiring plug for getting...
  4. S

    P0304 code and lights all over dash lit up

    Last week my 2010 yukon XL with 5.3 started a #4 cylinder misfire, traction control light on, stabilitrac lights on, tires pressure light on. Throwing only 1 code, P0304 code. When reset it comes back on within 5 seconds. Changed coil packs, ignition wires, plugs. No change. Not sure where...

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