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1999 GMC Yukon Denali 5.7L MIL Lamp on
Posted to GM Driveability on 11/6/2003 5 Replies

The vehicle came in with the check engine light on, and code P0446 (evap vent control problem). Voltage at termanal 25 (the signal wire for the fuel tank pressure sensor) of red computor conector was 1.660 with gas cap off. According to the flow chart this is ...

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  Related Documents & Media  1999 GMC Yukon Denali

 
Message Closed w/FIX

car Vehicle Data

1999 GMC Yukon Denali

VIN 1GKEK13R8X
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / vortec
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0446EVAP Vent Control System Performance
Message Closed w/FIX

car Vehicle Data

1999 GMC Yukon Denali

VIN 1GKEK13R8X
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / vortec
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0446EVAP Vent Control System Performance