I changed out the transmission in my 2007 Chevrolet Tahoe 5.3 and once I got the new transmission put in,it cranked and ran good. J went to the store and came back to my house and now it want turn over or do anything. The lights come on but no sound what so ever from the starter

2-3 shift soft flare up.

Will not shift from 2nd to 3rd

Short first started when disconnecting trailer harness, vehicle was dead, jumped and had multiple service warnings (stabilitrak, 4wd, power steering, braking, reduced engine power, etc.) and would cause cluster gauges to all bottom out to 0 even while driving along with dozens of codes. Sometimes occurred when hitting brakes. Changed battery multiple times and replaced trailer brake module and still occurs. Took it to dealership and they said it was most likely suspension control module, replaced, reprogrammed and issue is still happening.

My Tahoe won't shift past 2nd gear. I just replaced the transfer case

No sound comes from the radio when on; amp was replaced already. What’s odd is when the radio is shutoff after a minute or two the cd icon will just blink. Is the radio unit dead?

I replaced the 4wd switch on the dash and also the front axle shift motor.
The buttons on the switch do light up when I turn key on. Then I start the Tahoe and I have nothing plus the message says service 4wd. I checked the fuses. Any ideas

When I bought my car didn't know that it had a microscopic hole in it about the size of a number two pencil lead. One night during the snow storm all of my transmission fluid leaked out slowly slowly leaked out didn't drive the car while the transmission was empty and fluidless. Once I feel the transmission back up with fluid and repair the microscopic holes the car's been stuck in limp mode will reduce power mode

So while on deployment my little 35-year-old brother and his incredibly smart friends took my truck off roading, took out all the seats and put some black seats from a charger in my beige leather interior cutting all the harness links to the seats. After scabbing together 35 wires apiece to each seat, the truck won't start at all, I hooked up my autel box and it won't even read the truck not a single module. I am a mechanic and am stumped I haven't looked any further because I'm packing up to move from phoenix to New Mexico and have to drag the shit box with me now.. any thoughts my brothers

This error stays consistently on the obd tester but only affects the truck every so often where it will turn off the radio and the hvac and cluster will shut down. When it comes back it goes through an initialization of unlocking and locking the doors then the cluster comes back reading things like service 4x4 and service stability. Only happens about 5-10 times a year for the last 5 years. I just really need help finding the wiring diagrams for this. Thanks