PIT5208

File in Section:
Service Bulletin
Bulletin No.:
Date:
PIT5208
April, 2013
PRELIMINARY INFORMATION
Subject:
Fuel Gauge Shows Empty After Refueling And DTC P2636
Models:
2007-2013 Chevrolet Silverado Chassis Cab w/ Dual Fuel Tanks
2007-2013 Chevrolet Suburban HD
2007-2013 GMC Sierra Chassis Cab w/ Dual Fuel Tanks
2007-2013 GMC Yukon XL HD
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern
Some owners may comment that after refueling the fuel gauge will show empty, and when checking for DTCs there
will be a P2636. This concern may occur if the vehicle is being refueled with the engine running or ignition on.
Recommendation/Instructions
Before any in-depth SI diagnostics are performed, question the owner if the key or engine is on while refueling. If so,
advise the owner to turn the engine and key off, before refueling the vehicle.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is
resolved without completing every step, the remaining steps do not need to be performed.