I have a message on my dash that says service stability control and traction control.on my 2008 chevy express 3500
And it doesn't show my gears on the dash board anymore. And when I'm driving it doesn't shift gears it stays in 4th. And my reverse lights dont work while in reverse.
Any ideas?

Thanks for any info

 

which transmission do you have?

 

6.0 v8

 

that's your engine

 

It's an automatic transmission that's all I know. Sorry not really a car guy. Just learning about it all

 

ok they're all automatic. How many gears or what does the selector looks like? If you're not a car guy then you have to take it to a mechanic anyway right?

 

It has 1 2 3 and overdrive but that's not showing up on my dash.

 

I looked up the GM brochures for 2009 and I think they old came with the old 4 speeds. Those are cable operated, not electronic. Inspect the transmission around the gear selector linkage for loose wire connectors.

 

Thank you I'll have a look tomorrow

 

Do you have anything plugged in to the OBD port? There was a GM bulletin about devices like an OBD reader or insurance device that can throw that code.