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NP243C fit a NP3500

HI. I have a 1997 Yukon GT. If I install a NP3500 (5 speed manual) can I use the NP243C transfer case? Or need to install the whole tranny/transfer combo?
- yukonrrican
- Thread
- Mar 9, 2015
- Replies: 1
- Forum: Transfer Cases
Y
4L60E constant shifting between 3rd and 4th

Hi to all: I have a 1997 Yukon GT 4wd with 124K miles. It has 3.46 diff with 33in tires. This weekend driving in the highway it start to shift constantly between 3rd and 4th shift between 50 to 60 MPH. This morning driving to my job, it don't do it at all. Any advice will be appreciated.
- yukonrrican
- Thread
- Mar 9, 2015
- Replies: 3
- Forum: Transmissions