PIP5274D

Bulletin No.: PIP5274D
Date: Sep-2015
Subject:
Illuminated MIL. DTC P16F3 May Be Set As An Active Or History Code In The TCM
Models:
2015 Cadillac Escalade, Escalade ESV
2015 Chevrolet Corvette, Silverado
2015 GMC Sierra, Yukon, Yukon XL
Equipped with 8L90 Automatic Transmission (RPO M5U)
This PI was superseded to update Recommendation/Instructions. Please discard PIP5274C.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern
Some customers may comment on an illuminated MIL. Technicians may find a DTC P16F3 as an active or history code in the TCM.
Recommendation/Instructions
This DTC can set in several different modules. Verify that DTC P16F3 is set in the TCM.
Make sure all modules have the latest calibration installed.
If any other DTCs are set in any other modules those DTCs should be addressed first.
After addressing any other DTCs, clear all the DTC's and recheck for P16F3 setting.
If P16F3 resets in the TCM after confirming the latest calibration has been installed please contact TAC.
Do not continue with any repair attempts, do not disconnect or remove the TCM or TCM fuses.
Note: P279A setting in the TCCM will also set P16F3 as a default in the ECM, resulting in reduced power mode.
At this time it is not clear as to what other DTC's have P16F3 set as a default or which modules will set P16F3 as a default.
SI information will be updated as more information is obtained.
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