Service 4wd light - Dodge Cummins Diesel Forum
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post #1 of 1 (permalink) Old 12-30-2016, 02:20 AM Thread Starter
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Service 4wd light

2012 5500 6.7L Auto

I was responding to a call a few hours ago.
Pulled up past a driveway in 2wd, backed into the driveway in 2wd, pulled out
of the driveway in 2wd.
As i pulled out of the driveway my "Serv 4wd" light popped on.
I came up to a stop sign and stopped, the light went out.
I turned left, traveled about 500' and the light came back on.

It continued to turn on and off as i traveled and came to a stop
for about the next 12 miles.

Eventually, it stopped coming on.

I checked to see if my 4wd still engaged..4wd lock engages fine, 4wd low no longer
works. Light on the dash just flashes.

Any ideas before i take it to the dealer?


12' Ram 5500 6.7L Wrecker
03' GMC Sierra 2500HD 8.1L
03' Chevy Silverado 3500 8.1L
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