Pulling out of a gas station onto a highway my dash display showed "service power steering drive with care" I noticed I had no power assist to my steering and the steering was extremely hard to steer at best. I also received the message "service ecs" at this point I had little control of the direction the vehicle was going and managed to pull over. I also noticed the following functions stopped working, cruise control, traction control, lane assist, auto stop, etc. I let the vehicle sit about 20 minutes and restarted. No errors remained and I went on my way. Scary situation to be in on a highway.

- Longs, SC, USA

I have a brand new Silverado with less than 6500 miles and power steering stops working in middle of drive. Alone with brakes failing. This is a major safety issue!

- Sapulpa, OK, USA

A warning dash board notice 'service steering column lock'appeared the very day we test drove the truck.and has not been abled to be repaired/corrected.GM has my truck for more than 50 days. GM can't guarantee me that the steering wheel will not lockup while driving down the road.with that statement I consider this a unsafe vehicle to drive. And as of today's date GM and their dealership can figure this problem.I requested that GM repurchase the unsafe truck back, I only have this truck about 8days out of 60.

- Imlay City, MI, USA

Service steering column warning comes on almost everytime vehicle is started drivers side mirror pops off especilly if closed when washing.

- Sioux City, IA, USA