Hello all, hope all is well across the web.. lol. Well the problem is this. Was coming down the 15 frwy here in CA after a weekend of hard offroading and mudding in my 97 Tahoe 4x4 and around Fontana, I lose drive power. Immediately my speedo goes to 0 (zero) and ABS Light comes on. So I coast off the freeway to a side street (Yes I coasted quite a ways) and come to find out its my transfer case AND rear end. A week later, its fixed and running again. But ABS light remains. Ive never had an issue with ABS until the rear diff went out. Any ideas? And is there any way to manually check trouble codes on my truck?

Side note: Cant believe I made it off the freeway safely since after opening my rear diff, one C clip was sitting on the bottom. That woulda been something else!