1.3

hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
132,500 miles

About These NHTSA Complaints:

The NHTSA is the US gov't agency tasked with vehicle safety. Complaints can be spread across multiple & redundant categories, & are not organized by problem. See the Back button — blue bar at the very top of the page — to explore more.

Get notified about new defects, investigations, recalls & lawsuits for the 1999 GMC Sonoma:

Unsubscribe any time. We don't sell/share your email.

problem #2

Oct 082016

Sonoma

  • 100,000 miles
During a panic stop the brake system light came on and the brakes felt soft but still worked. During the drive the brakes became very weak. When I checked the brake fluid it was empty. I refilled it and started checking for leaks. I found that both the front and rear brake lines we fractured because of the pressure during the panic stop causing the rusted lines to burst. This seems to be a known ( but not reported) problem for this truck in the northern area..

- Newark, OH, USA

Add Complaint
problem #1

Nov 182012

Sonoma 6-cyl

  • 165,000 miles
Brake line hydraulic failure of hard steel line. The line that broke goes to the back wheels along the frame.

- Fredericksburg, VA, USA

Add Complaint