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1998 Chevrolet 1500 Pickup Question: How do you reset transfer case control module for the 4wd system?

 

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rvgadawg, 5.7L V8, Potwin, KS, February 11, 2014, 08:09
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Why is my 4wd indicator lights flashing and how do you reset the tccm module?

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    G. T. Service Center (4142 Answers) , Stephenville, TX - (254) 638-3236
    ProfessorG February 11, 2014, 08:17
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    You have to use a scanner, preferably a Tech2 to be able to read the Transfer case control module. Read and repair the codes listed, then clear it.

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    rvgadawg, February 11, 2014, 09:32
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    Thanks for the info. Could the tccm be the reason the front end won't lock in? I've already replaced the front end actuator and theswitch on the dash. The transfer case is locking in but the lights still flashing and the actuator want engage. Thanks

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    ProfessorG, February 11, 2014, 09:44
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    The TCCM is the component that commands the lock up, but for some reason it has noticed a failure somewhere and it's trying to show you what the fault is by blinking the light. That's the point where the module needs to be scanned to see what it is. If you have fixed the problem and it is no longer an issue, you have to tell the module by clearing the code, then it will look again, and if all is well it will start working. If not it won't clear until the fault is fixed.

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    rvgadawg, February 11, 2014, 09:47
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    Thanks again... I will have it scanned ASAP

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    ProfessorG, February 11, 2014, 09:50
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    Great let us know if needed further.

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