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  1. #1

    Default 99-00 GMC Yukon Denali - Electrical bugs

    I am experiencing the below problems on my Yukon Denali, any information from those who have experienced these types of issues would be appreciated.

    • Occasionally the stereo will stop working, no power, when the truck is put in any gear besides park. When this occurs the windows and door locks will sometimes stop working.
    • Headlights will sometimes come on when it is getting dark and sometime they have to be turned on manually.
    • Sometimes the truck cannot be shifted out of park without turning the steering wheel first.
    • The highest setting on the AC/Heater fan turns the system off

  2. #2


    the fan setting sounds like a bad blower motor resistor. The other issues could be caused by a bad bcm. The 99-00 yukon denali were one of the first trucks that gm produced with a bcm. it is located in the center console. I have seen tons of odd issues occur due to a bad bcm in those year trucks.

    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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