GMC · Canada · High
GMC Yukon, Yukon XL +3 more: Electrical
Affects GMC Yukon, Yukon XL, Sierra, Savana, Acadia · 2013–2014 — about 5K vehicles.
The hazard
On certain vehicles, the chassis electronic module may have been contaminated at time of manufacture, which could cause an electrical short to occur within the module. This could cause the vehicle's check engine light to be displayed, or cause the engine to fail to start or stall, resulting in a loss of motive power. If the vehicle is equipped to support electric trailer brakes, the vehicle could also lose trailer brake function and display a "Service Trailer Brake System" indicator. These issues could increase the risk of a crash resulting in injury and/or damage to property. Correction: Dealers will replace the module with a revised part.
What to do
Contact your dealer; the remedy details were not included in the filing.