New Forum guy here. Heres my issue.

I have an 01 Suburban LT 4x4. Recently had tranny rebuilt. 245k on the clock. No major mechanical issues other than what happened today. Was driving to work on the expressway during rain storm. Out of no where while cruising at highway speed some electrical glitch happened. Front and Rear a/c stopped working, right headlight went out, engine temp dial on dash went to the low side and stayed pegged, fuel guage went to full and stayed pegged, odometer and gear slector guage turned off (digital guage). Windows roll down and back like normal, sunroof opens and closes like normal. Battery light on messege center came on almost instantly but voltage doesnt drop.

Checked battery and connections are fine and clean of corrosion (didnt look at ground wires yet) All belts present and accounted for in engine compartment. All fuses are intact to all affected areas mentioned above. Havent tried volt meter.

Waiting to get home to run code machine but check engine light illuminated during start and goes back off in normal manner.

Thoughts, musings and ideas welcome. Have some automotive mechanical knowledge, work as Aviation Mechanics so not entirely stupid lol.