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2003 GMC Yukon SLE 4.8L MIL Lamp on
vehicle came in with hard system lean bank 1 and 2 codes, checked fuel pressure was 40psi, tried to adjust regulator would not change, replaced regulator and adjusted to 48 psi max, replaced fuel pump + filter and adjusted fuel pressure to 54psi. long term fue...
FIX posted 1/6/2009
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Message Closed w/FIX
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16 Replies Received
16 Replies Received
Related Documents & Media | VIN | 1GKEK13V33 |
| Engine | 4.8 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Intermittently |
| Misc. | 4.8L |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
| P0174 | Fuel System Too Lean (Bank 2) |
Message Closed w/FIX
Vehicle Data
2003 GMC Yukon SLE
| VIN | 1GKEK13V33 |
| Engine | 4.8 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Intermittently |
| Misc. | 4.8L |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
| P0174 | Fuel System Too Lean (Bank 2) |
Video