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Old 10-02-2010, 09:57 PM
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service 4wd light with no dtc?

my service 4wd light has been on for a while on my 05 gc wk limited 5.7, i paid the dealership $90 to clear it and it came back on the same day. nothing shows up on the scanner, what's the deal?
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Old 10-02-2010, 10:55 PM
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Re: service 4wd light with no dtc?

Any symtoms at all such as really bad low speed crow hop while turning?
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Old 10-02-2010, 10:56 PM
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Re: service 4wd light with no dtc?

Mine did this too and they had to replace the front differential sensor. It's about a $45 part. Fixed it right away.
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Old 10-03-2010, 01:41 PM
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Re: service 4wd light with no dtc?

actually i did notice it crow hopping when i turned sometimes.. is that the sensor that cain45 mentioned?
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Old 10-03-2010, 09:14 PM
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Re: service 4wd light with no dtc?

there is a TSB for false service 4wd warnings. i had mine flashed and it hasnt come up again since then.
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Old 10-04-2010, 09:27 AM
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Re: service 4wd light with no dtc?

Mine was crow hopping very bad when my wheel speed sensor went out, although I had a code showing which sensor.
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Old 10-04-2010, 11:17 AM
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Re: service 4wd light with no dtc?

alright i guess i'll have it re-flashed again and see if it pops back up. i'll check the diff fluids too, i don't think it's leaking fluid but who knows :/
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