Almost one year ago my Tahoe failed and still 2 dealers can't find the issue. 8 times have gone back to the dealer and still not fixed.
It does numerous things like throwing codes in the screen, service stability track, service 4x4, reduced engine power, brake brake, and reduced steering assist. The truck starts to slow down or continue in the same gear but won't accelerate anymore, sometimes if you stop it won't go anymore Other times if you turn the car off you can't turn it on for 7 hrs Other times while you driving all needles go to zero rpm speed gas all in zero Sometimes the car won't start and if you remove the key and flip it starts but sometimes won't accept the gas. Won't show the gear position while acting up It's a complete mess and is so random that won't do it while is at the dealer

I'm almost at the point of making a cool video at the range.

Any advice?