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2003 GMC Yukon Denali 6.0L MIL Lamp on
After replacing the O2 sensors the cust. said the MIL lamp come on and then goes off when they drove it on the highway. Last time it come into the shop the MIL lamp was on and the code was reading P0171. I have checked for evac leaks leading to the intake.
FIX posted 2/8/2008
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Message Closed
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Related Documents & Media | VIN | N/A |
| Engine | 6.0 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
| P0174 | Fuel System Too Lean (Bank 2) |
Message Closed
Vehicle Data
2003 GMC Yukon Denali
| VIN | N/A |
| Engine | 6.0 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
| P0174 | Fuel System Too Lean (Bank 2) |
Video