abnormal shifting
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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
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2022 Denali transmission
Hi guys, long story short, 2022 Denali, 6.2, runs great, shifts fine, UNTILL I give it the juice. If I'm at lower speeds and hit it, the trans feels weird , like it's bumping or almost slipping, does it 80 percent of the time, normal city driving it seems fine, but when I punch it to get on the...- Hiebs
- Thread
- 2022 abnormal shifting transmission
- Replies: 0
- Forum: Engine & Drivetrain
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2015 Suburban-Periodic rear end rumble strip sensation at highways speeds, between 1k-2k rpm
Same feeling when you drive over a "rumble strip" on the highway occurring at highway speeds. The sensation feels like it is coming from the rear of the vehicle, will last for a second or two along with a rpm drop of about 100-250. This will repeat rhythmically sometimes, and randomly at times...- montcrw15
- Thread
- abnormal shifting engine highway speed rpm drop rpms rumble shifting transmission
- Replies: 3
- Forum: Engine & Drivetrain
