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2003 Chevrolet Trailblazer LS 4.2L MIL Lamp on
Trailblazer that runs fine but sets PO171 System Lean code at idle. Long term fuel trim at 22 Short trim fluctuating near 0. Fuel pressure good at 54 PSI, no vacuum leaks found, sensor data looks good, oxygen sensor switching very good. Also had a U1000 - clas...
FIX posted 2/8/2006
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Message Closed w/FIX
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5 Replies Received
5 Replies Received
Related Documents & Media | VIN | 1GNET165X3 |
| Engine | 4.2 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Idle, Intermittently |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
| U1000 | Class 2 Communication Malfunction |
Message Closed w/FIX
Vehicle Data
2003 Chevrolet Trailblazer LS
| VIN | 1GNET165X3 |
| Engine | 4.2 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Idle, Intermittently |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
| U1000 | Class 2 Communication Malfunction |
Video