2004 Sle package does not want to engage 4wd. Any body know why? is it a vac problem like on other trucks or is it the transfer case?
Speed and ABS sensors can fu¢k up the 4WD. The issue might not be a mechanical problem. When you're on 2WD, when you back up a few feet can you put it in 4-Low? Does he have any lit up lights in the dash?
there may be a leak in the vacuum actuator that engages the transfer case.
I dyno those RE5R05A transmissions all day, but never touch the transfer cases or anything behind the extension housing. Damn. Hope ya get it figured out.
On the other hand....you have other fingers.
"You really need to staple your face shut"-THE Joey Baggs.