PIT5219A

Bulletin No.: PIT5219A
Date: Sep-2013
Subject:
DTC B2600 and B2605 Set With No Other Symptoms
Models:
2014 GMC Sierra 1500
This PI was superseded to provide fix information. Please discard PIT5219.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern
Some technicians may find DTCs B2600 Sym 04 and B2605 Sym 04 set in the BCM with no other symptoms. These two DTCs may falsely set if the DRLs are
operated and the fog lamps are turned on. The lamps will work as designed, and there will be no issues or customer complaints with the lamps.
Recommendation/Instructions
To correct these false DTCs from setting, updated the BCM with the latest calibrations in TIS2WEB.
Reference the latest version of Service Update Bulletin 13257 for repair procedure and warranty information.
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.
GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may
occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools,
safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that
your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION
1