What Owners Complain About
Sometimes it helps just to tally up the complaints and see where the biggest stacks are. Use this information to learn about troublespots or to run for the hills.
Worst Issues
- gas gauge not reading properly in the 2006 Envoy
8 complaints
- excessive oil consumption in the 2006 Envoy
3 complaints
- brake lines rusting out in the 2006 Sierra 1500
3 complaints
- worn out wheel bearing in the 2006 Sierra 1500
3 complaints
- loss of compression in the 2006 Envoy
2 complaints
- engine stalls/dies while driving in the 2006 Envoy
2 complaints
- pipes to rear heater corroded and leaking in the 2006 Envoy
2 complaints
Worst Models
- Envoy
40 complaints
- Sierra 1500
23 complaints
- Envoy XL
10 complaints
- Yukon
7 complaints
- Sierra 2500
7 complaints
- Canyon
5 complaints
- Sierra 3500
2 complaints
What Breaks the Most
- Engine
19 complaints
- Brakes
10 complaints
- Interior
10 complaints
- HVAC
9 complaints
- Transmission
8 complaints
- Electrical
8 complaints
- Fuel System
5 complaints