Ha! I had the nearly identical problem with my 97 5.7 Tahoe a couple of years ago. Intermittently, for about a year. Was driving me nuts. Replaced VSS, replaced transmission switch on the side of the 4L60e. Didn’t help.
Turns out that it’s the ignition switch on the steering column! Contacts...
Check out Precision Transmission in Amarillo, run by a guy named Rich
They’ve got a YouTube channel
I actually visited him in person kind of by accident a few years ago, guy blew my mind with all his skills and knowledge
I swear he could rebuild a 4L60 blindfolded and in the dark, and...
Wow, thanks for all the replies, everyone!
I’m in Mazatlán now. I searched out the highest-rated “aire condicionado” shop in town and paid him a visit today. In my comically awful Spanish I tried to explain the situation to him.
He had me start the Tahoe and then turn on the AC. He listened...
Hi from Mexico, GMT400 amigos. Two days ago in Tucson I had my fourth AC compressor installed in my Tahoe. And today, after three long hours of use…it failed! Unit is howling like a pack of coyotes on a moonlit night. And of course I’m now south of the border, 500 miles from the shop that...