Range shift inhibited on lbz

Jmccomish686

New member
Oct 27, 2024
2
0
1
New Hampshire, USA
So my lbz of 286,000 miles with a suncoast stage 1, likes to downshift into 4th, 2nd. And sometimes cant decide to shift into 1st without jumping back to 2nd as im about to stop
I unplugged my driver side front abs because it was acting up everytime i stop as well.
It shifted smooth, no clunking and no hanging upshifts. Today i went out and it was slamming down in 4th
Then it got stuck in 5th!
had a solenoid B stuck code, i cleared it, then it wont shift into anything but reverse.
Unplugged everything, cycled the keys, no cure.
Last week i changed my trans fluid and filter, topped off T case because its blowing fuild everywhere around the yoke, not the shaft seal either
There is some up and down play when i grab the driveshaft
 

2004LB7

Well-known member
Dec 15, 2010
6,951
2,130
113
Norcal
It will mess with the shifting as you are experiencing. ABS sensors will do the same thing if not reading correctly