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04 silverado 4wd indicator

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New User

Feb 15, 2017, 5:31 PM

Post #1 of 2 (415 views)
04 silverado 4wd indicator Sign In

i have 2004 Chevrolet Silverado 4x4 z71 extended cab and the service 4wd indicator is on.
when i start my truck the lights on the 4wd switch comes on and then goes right back off. so i changed the switch and that didn't fix the problem so i changed the transfer case module and still doing the same thing. any ideas?

Hammer Time
Ultimate Carjunky / Moderator
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Feb 15, 2017, 5:52 PM

Post #2 of 2 (410 views)
Re: 04 silverado 4wd indicator Sign In

I you're finished aimlessly throwing parts at it. have the TCM scanned for stored codes. That's what the flashing means. That will require a professional level scan tool, not a generic code reader.

In the meantime, I am moving your question over to the trans category where we have a trans specialist that will be along to help once you post the code numbers. Remember, this is not the engine computer. It is the transmission computer.


We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

(This post was edited by Hammer Time on Feb 15, 2017, 5:53 PM)

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