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2003 GMC Sierra 3500 6.6L Check engine light
Posted to GM Driveability on 4/8/2008 3 Replies

Vehicle came in with a return code P2066- fuel level sensor secondary problem. Checked fuel level sensor Ohms wise, 40 Empty, 250 Full.

Does anyone know what tells the ECM to fire or power up the auxillary tank fuel pump to transfer fuel from rear tank to fr...

3 Replies Received (View Replies)

  Related Documents & Media  2003 GMC Sierra 3500

 
Message Closed w/FIX

car Vehicle Data

2003 GMC Sierra 3500

VIN 1GDJC34163
Engine6.6 L / 8 cyl / DIESEL
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsCheck Engine Light
OccursAlways

Trouble Codes

P2066Fuel Level Sensor 2 Performance
Message Closed w/FIX

car Vehicle Data

2003 GMC Sierra 3500

VIN 1GDJC34163
Engine6.6 L / 8 cyl / DIESEL
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsCheck Engine Light
OccursAlways

Trouble Codes

P2066Fuel Level Sensor 2 Performance