p0120

  1. S

    REDUCED ENGINE POWER. Read below and please help me understand this.

    How do I check CAN BUS on my 2005 z71 Tahoe. I understand how to do it through a 16 pin OBD2 port but have no idea how to do it on my Tahoe due to it only having 4 pins in the OBD2 port. Ima supa confused. It has two grounds, data wire, and power wire or voltage wire. Any help on this is much...
    • stretchit
    • Thread
    • 2005 tahoe 5.3l no throttle response p0120 p1125 p2120 p2125 pedal adjuster pedal positon sensor reduced engine power
    • Replies: 45
    • Forum: Engine & Drivetrain

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