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P0446, P0440 evap system diagnosis questions
Working on this truck it has two evap related DTC's. P0446: EVAP emissions vent system performance, and a P0440: EVAP system problem. I hooked vehicle up to my Solus. Watched KOEO fuel tank pressure and it reads about -2inhg and 1.3v. I started the vehicle and... Login to read more. ![]()
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| Engine | 2.2 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2000 GMC Sonoma SL 2.2L
| Engine | 2.2 L |
| Trans | 4-speed Automatic (Electronic) |

11 Replies Received
11 Replies Received