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2002 Yukon XL1500 Diagnostic Trouble Code C0323

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  • 2002 Yukon XL1500 Diagnostic Trouble Code C0323

    My service 4X Drive message light is on. Anyone know of any common problems that GM has with the Yukon that could possible fix it? Sounds like it's trying to engage, but won't. It is stuck in 4X drive.

  • #2
    What is the definition of the code
    2015 Silverado

    Originally posted by JoeliusZ28
    If you need 6 and half grand to break your tires loose you shouldnt be attempting a holeshot.

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    • #3
      T-case lock circuit low

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      • #4
        Push button 4wd? 90% of the time its a bad switch in the dash they are a known problem.

        Went thru this last year with my 04 Tahoe. Replaced switch and all is good now.
        Western Michigan Camaro Club ~ President
        1987 Camaro IROC-Z Pearl White & Black w/ Red Pearl, 355 TPI, A4, 3:42, AirRide,"GOMARO"
        2017 Silverado Double Cab Z71 Pepperdust Metallic, 5.3, A6, 3:42, "SASYZ71"
        2005 Pontiac Grand Prix GT White, 3800
        WMCC Website www.wmcamaro.org

        "A government big enough to give you everything you want,
        is strong enough to take everything you have." — Thomas Jefferson

        "Democracy will cease to exist when you take away from those who
        are willing to work and give to those who would not."
        Thomas Jefferson

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        • #5
          Originally posted by WMCC Gary View Post
          Push button 4wd? 90% of the time its a bad switch in the dash.
          Yes, push button. I hope that's what it is, since that would be cheapest. All the other options require buying the part and not being able to return them.

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          • #6
            Check voltage at the t-case motor, It sounds like the motor is weak if you hear it trying to change positions. They get corroded inside after years of michigan winters
            sigpic

            Go BIG or go HOME!

            2000 Camaro SS Triple Black, 6 speed, Born 6/16/2000. SLP #8468. Plenty of Goodies

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            • #7
              Also check the resistance through the motor t should be within 18-25 ohms
              sigpic

              Go BIG or go HOME!

              2000 Camaro SS Triple Black, 6 speed, Born 6/16/2000. SLP #8468. Plenty of Goodies

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              • #8
                Check for a rubbed through wire at the shift control module which is behind the 4x4 range switch
                sigpic

                Go BIG or go HOME!

                2000 Camaro SS Triple Black, 6 speed, Born 6/16/2000. SLP #8468. Plenty of Goodies

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                • #9
                  It was the transfer case motor. Thanks for all the help!!!

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                  • #10
                    Originally posted by sgurzick View Post
                    It was the transfer case motor. Thanks for all the help!!!

                    Your welcome!!
                    sigpic

                    Go BIG or go HOME!

                    2000 Camaro SS Triple Black, 6 speed, Born 6/16/2000. SLP #8468. Plenty of Goodies

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                    • #11
                      Ok, was driving the Yukon today and the service light came back on. I don't want to touch the switch in fear that it won't go back into 2 wheel drive. I haven't run any codes on it yet.

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                      • #12
                        Hey Steve, Once you get the code post it and I will see what I can come up with for ya
                        sigpic

                        Go BIG or go HOME!

                        2000 Camaro SS Triple Black, 6 speed, Born 6/16/2000. SLP #8468. Plenty of Goodies

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                        • #13
                          Will do, thanks. It may be later in the week I need to get it to someone that has that type of scanner.

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                          • #14
                            Your welcome ! Ill just wait to hear from you, send me a pm if need be
                            sigpic

                            Go BIG or go HOME!

                            2000 Camaro SS Triple Black, 6 speed, Born 6/16/2000. SLP #8468. Plenty of Goodies

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                            • #15
                              Same code as before, at least this time it shifted back into 2 wheel drive, but the service light is still on.

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