4wd service light
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Service 4WD light came on last night, causing shifting problems
On my 1999 GMC Yukon Denali (5.7L V8 ~213k miles) The Service 4WD light came on last night while I was driving, ever since the light came on when it tries to shift from 1st to 2nd the engine almost dies due to the rpm dropping so low, it has a fair amount of acceleration loss compared to before...- Chris_B
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- 4wd service light abnormal shifting reduced acceleration
- Replies: 11
- Forum: Engine & Drivetrain
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2002 tahoe z71 Service 4wd light on, no blown fuses, new selector switch.
Hey I know this question has probably been asked before but I have been googling all day. I bought the truck last week knowing it had this problem, previous owner had planned to fix it himself but has been unemployed for month and was clearing out projects. It's a 2002 with no rust ( im in...- Ialsofkdyourdad
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- 2002 tahoe 4wd service light z71
- Replies: 30
- Forum: Engine & Drivetrain
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Kicking into 4L with encoder unplugged
So I'm at a loss right now with my Tahoe. I have a rear main seal leak and it's been leaking into the encoder motor. I cleaned and replaced the encoder ring once I found the issue but since doing so my tahoe kicks into 4L on it's own when starting the vehicle and putting it into drive. I have...- Andrew Smith
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- 4wd 4wd service light service 4wd transfer case
- Replies: 0
- Forum: Engine & Drivetrain
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Transfer case problems?
I have a 2007 GMC Yukon SLE and I had a 4wd warning light and the lights on my selector switch were out. I tried new selector switch to no avail. I have checked fuses which were good. I replaced the encoder motor unit and after finishing I have lights on the selector switch but cannot shift into...- ztlh13
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- 4wd service light transfer case transfer case stuck in neutral
- Replies: 4
- Forum: Engine & Drivetrain
