My 1997 chevy tahoe is having electrical problem

Sounds like a bad dash ground, use a heavy jumper wire from known good ground and ground the dash and retest

You just go to the link I attached I'm sure you will get the solution of your problem chevy

Have your fuel pressure checked, I suspect the fuel pump is bad. It needs 60psi to run,

Check the dealer and see if your radio automatically adjust to your speed. Some radios were built to raise the volume when driving at higher speeds and when you get in slow traffic or when you stop it would automatically adjust down the volume. You can also go to a Radio Shack and get a spray cleaner for electrical parts and pull the volume knob off of your radio and spray the volume control and turn it rapidly to remove any hidden dirt on that volume control.

The radio may have an auto volume function that may have accidetly been tripped. As far as the transmission issue, it might be an electrical problem or it could be something mechanical near the shifter in the steering column. If you have to turn the wheel to get it to work then that is where I would start first. make sure that there is nothing that would impede the shifter from working properly.

hello ther have you chekt the fuses if the have just puld the dvd player out a broken cabel can have toucht the body and chort surcet somthing

check your rear brake shoes if you had them changed recently they may not have been adjusted properly and that sometimes will cause that and also check the rear diff yoke where the driveshaft goes insometimes it get gear oil on it and harder for it turn. i would try these hints first before i take to shop

Ignition switch check ignition voltage.... www.TransmissionGarage.com

in the middle of the seat cushions in the back of the seat there is a little loop, pull that loop forward and that will have the seat's bottom pulled down to the floor agains the back of the front seats. Next simply apply a lil muscle to the back of the back seats and the seats should fold down nicely into the open space. Be sure to remove the headrests so the seat will fold all the way down. post any issues u may have.

Not 100% sure if this will help but go here and see... if you already haven't.

https://www.etrailer.com/question-186418.html
Best of luck.