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2000 Chevrolet Silverado 1500 Question: I have a 2000 chevy silverado 4x4, no lights on the selsctor switch?

 

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craigars, 5.3L V8, Duluth, MN, December 07, 2013, 08:02
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I replaced the switch, did not work, all fuses are good, I notice the lights flash on anitial start up of the vehicle, no codes came up on the scanner, what do you recommend?

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  • Answer #1

    pushrod December 07, 2013, 08:35
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     Master

    Is the 4x4 working? Was it scanned with a pro. quality scanner? Not a code reader!

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    craigars, December 07, 2013, 12:32
     Rookie

    no , the 4x4 is not working and it was scanned using 3 different code readers purchased from auto parts stores, which I assumed would let you know the problem area.OH, and yes it is the 4 button selector switch.

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    pushrod, December 07, 2013, 12:40
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    Code readers cant 'scan' the transfer case module or read it's codes! Suggest having it tested with a scan tool.

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    craigars, December 07, 2013, 12:53
     Rookie

    Thanks, guess I will have to take it in and have a quality scanner check it out. I appreciate your response and your time.

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    pushrod, December 07, 2013, 13:03
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    You bet!

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  • Medium-star Best Answer
    bad007 December 07, 2013, 10:53
     Enthusiast

    NP8 or NR4 RPO code on the glover box label? 3 or 4 button switch assy. The controller is responsible for illuminating the switch indicating the mode your in. As asked B4 does the 4x4 work or not and was it scanned with a real diagnostic monitor, not just an OBII scan tool. The transfer case shift motor is real common with those as well as the transfer case control module.

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    craigars, December 07, 2013, 12:43
     Rookie

    It is the 4 button assy and it was scanned using the OB scan tool, the 4x4 does not work at all.

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    bad007, December 07, 2013, 12:52
     Enthusiast

    Pushrod is right, Those code readers are what we call generic OBII code readers and are for the engine codes only. It wont scan other systems like body controllers , transfer case control modules, auto climate control modules and manufacturer fault codes over PO1000. It needs to be scanned be a pro grade scan tool.
    4 button should be the NP8 system and is the more expensive one. There should be a label inside the glove box with one of those codes. The NP8 will have a connector going into the shift motor plus a short wiring harness that breaks out of it with a rectangular plug on the end.

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    craigars, December 07, 2013, 12:58
     Rookie

    Will have it scanned professionally , greatly appreciate you people being out there for the guidence.

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    bad007, December 07, 2013, 12:59
     Enthusiast

    Your welcome :D

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