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Service 4WD light came on last night, causing shifting problems
So heres an update, I managed to drive it to my local shell gas station and put some shell plus (88) and fired it up, service 4wd light is gone and shifting issues are gone, I don't know how but it's fixed as of right now Update 2: the light came back on same issues once again after I had to...- Chris_B
- Post #6
- Forum: Engine & Drivetrain
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Service 4WD light came on last night, causing shifting problems
2WD, The light on the selector has the little red light on 2WD High- Chris_B
- Post #4
- Forum: Engine & Drivetrain
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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
- Thread
- 4wd service light abnormal shifting reduced acceleration
- Replies: 10
- Forum: Engine & Drivetrain
