Krash
Newbie
So finally got around to picking the truck that I wanted after looking for a month and a half. It's a 94 GMC 3500 crew cab 4x4 with a 454 and 4L80E transmission. Everything seems to work fine except for when four low is engaged. When four low is engaged it doesn't seem to shift through the gears on the transmission as it normally would. And on one occasion it shifted only when it got to a high RPM and hit kind of hard. I've never seen anything like this any suggestions?