92 f-150 tranny... transfer case

SOURCE: 01 dodge 1500 4x4 Transfer case / transmission problem

check the rear differential as well as the transfer case...you may have broken something in both of them...i have seen it happen...since 4low uses a different gear it is possible for it to move in low and not 4 high

SOURCE: 1996 S10 4x4 4x4 does not engage manual shift for transfer case

I figured I'd write a followup in case it helps somebody else.

Per @ccn7's information I did some troubleshooting and determined that the problem was the thermal linear actuator (TLA) [GM# 26013495). I ordered an aftermarket replacement (600-100) from Amazon.com cheaper than I could get wholesale from a parts store.

It worked except that I had to remove the electrical connector from the new unit and attach the connector from the old unit. Apparently the one I ordered is for trucks manufactured before 01-02-1996. Instead, I should have ordered the newer design (600-101) and my connector would have fit. (Or so I'm lead to believe.)

I've also discovered that you can get a replacement kit that eliminates the TLA altogether. It's more expensive and more work to install, but apparently it provides additional benefits over the standard TLA. Google Posi-lok if you're interested.

Thanks for stearing me in the right direction ccn7!

SOURCE: 98 suburban 4l60 e no reverse

youre right tranny rebuild

SOURCE: 1995 Chevy k1500 Transmission Problems

If check engine light is on ,remove battery cable, you have an electrical problem, maybe fuse?

SOURCE: Blazer stuck in 4 wheel high

I had the same solution with 2005 blazer......dont know how but this worked...........removed the courtesy lifgt fuse for approx. 10 minutes....put fuse back in and voila..able to shift out of 4 wheel drive