[Stacy999]

I am towing or trying to tow a haul with my 2017 Colorado. we hooked it up and everything works but the left side. is this something I can fix or do I need to take it in. I inherited the truck from my husband and I'm not a mechanic. any assistance is appriciated

 

[terryjm1]

Check your fuses under the hood. Had the same problem and it was a blown fuse.

 

[Streamintrip]

There is a similar thread on this issue on the ColoradoFans forum. You may want to refer to it for reference.