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2003 GMC Sierra 2500 HD SLE 6.6L MIL Lamp on
This truck has a code P0404 code and I need a lttle help troubleshooting. It has low vacuum on the egr vacuum line until I block off the egr valve. As far as I can tell the egr should hold vacuum. If so, then that is my problem. If not, then I could use some h...
FIX posted 4/20/2004
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Message Closed w/FIX
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Related Documents & Media | VIN | 1GTHK23153 |
| Engine | 6.6 L / 8 cyl / DIESEL |
| Trans | 5-speed Automatic (Electronic) |
| Delivery | FI / diesel |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0404 | EGR Control Circuit Range/Performance |
Message Closed w/FIX
Vehicle Data
2003 GMC Sierra 2500 HD SLE
| VIN | 1GTHK23153 |
| Engine | 6.6 L / 8 cyl / DIESEL |
| Trans | 5-speed Automatic (Electronic) |
| Delivery | FI / diesel |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0404 | EGR Control Circuit Range/Performance |
Video