PIC5851B

Bulletin No.: PIC5851B
Date: Dec-2014
Subject:
Diagnostic Tip - USB Port Inoperative Using Multi Media Interface Tester (MIT)
Models:
2013 Cadillac ATS
Equipped with Radio RPO RAO (without UA3)
2014-2015 Cadillac ATS
2014 Chevrolet Impala, Silverado 1500
2015 Chevrolet Colorado, Impala, Silverado, Suburban, Tahoe
2014 GMC Sierra 1500
2015 GMC Canyon, Sierra, Yukon Models
Equipped with Radio RPO IO3
This PI was superseded to update Models and Model Years. Please discard PIC5851A.
Condition/Concern
USB port inoperative using Multi-Media Interface Tester (MIT)
MIT Information
The Multi-Media Interface Tester (MIT) Kit # EL-50334-100
Handheld tool in the kit labeled EL-50334-20
Recommendation/Instructions
Currently, the Multi-Media Interface Tester (MIT) should NOT be used on the above listed vehicles with a base radio for testing USB function. If the MIT is used
to test USB function, the USB port may become inoperative. For the port to function again, the ignition will need to be cycled off for 10 minutes OR the battery will
need to be disconnected then reconnected. The MIT can be used to test Bluetooth streaming and AUX input "ONLY" if the MIT is powered from the vehicle's
auxiliary 12 volt outlet.
Engineering is currently aware of the concern and this PI will be updated when further information is available.
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