On going electrical issues

[Mason Mayo]

I have a 2008 Tahoe Ltz. I currently have hard shifting/lack of wanting to shift gears, lack of power, and several codes regarding a lack of communication with the transmission:
(Photos of codes attached)
Everytime I read data while it’s moving I get different readings left and right, rear output shaft speed is 0 while driving but the next time I test it’s normal. Transmission temperature sensor read -40 degrees but in another test read normal. Vehicle speed sensor read 0 and currently is the only part I’ve replaced. I am still dealing with an ongoing ABS, Stabilitrak, Traction Control issue too if those are somehow related. I’ve had nonstop electrical issues since buying this tahoe last year. Recently they’ve continued to get worse. Has anyone had these or similar issues and what worked for you?

 

[CaptainAmerica1]

Check your frame grounds. Perform the big 3 upgrade. Double check the connections at the upper rear shock mounts. Those are easy to get to and even easier to accidentally disconnect while doing upper shock bolts.

 

[BG1988]

I have a 2008 Tahoe Ltz. I currently have hard shifting/lack of wanting to shift gears, lack of power, and several codes regarding a lack of communication with the transmission:
(Photos of codes attached)
Everytime I read data while it’s moving I get different readings left and right, rear output shaft speed is 0 while driving but the next time I test it’s normal. Transmission temperature sensor read -40 degrees but in another test read normal. Vehicle speed sensor read 0 and currently is the only part I’ve replaced. I am still dealing with an ongoing ABS, Stabilitrak, Traction Control issue too if those are somehow related. I’ve had nonstop electrical issues since buying this tahoe last year. Recently they’ve continued to get worse. Has anyone had these or similar issues and what worked for you?

check the transmission 16 pin connector for backed out pins..(if you do see back out pins it will need to be taken care of by a pro because it need a special tool).. and the bundle of wires for damage near the ebrake