Certain vehicles located in Ontario, Quebec, New Brunswick, Nova Scotia, Prince Edward Island, and Newfoundland & Labrador may experience unwanted Antilock Brake System (ABS) activation and increased stopping distances during low-speed brake application (less than 16 km/h and greater than 6 km/h). This condition does not set any ABS codes nor does it illuminate the ABS warning lamp. Correction: Dealers will remove the wheel speed sensor and thoroughly clean the wheel speed sensor mounting surface on the bearing, apply Zinc-X to the cleaned surface, grease the mounting surface, reinstall the wheel speed sensor, and check the output voltage to ensure the wheel speed signal is within specifications.
Certain vehicles equipped with rearward folding head restraints on the second row seats. Two potential pinch points exist on each of the folding head restraints when the head restraint(s) are folded rearward as the seatback is folded down. If a person were to insert their finger(s) into the pinch point when the head restraint folds, it could trap and pinch the finger(s) causing injury. Correction: Dealers will install protective covers over the pinch points.
Certain vehicles fail to conform to CMVSS 209, seat belt assemblies. These vehicles have a condition where one or two sensors in the driver's and front seat passengers seat belt retractors may be inoperative. The seat belt retractors will lock when the belt webbing is extracted during a crash; however the mechanism that locks the seat belt retractor when the vehicle decelerates quickly, such as during heavy braking, may not restrain the occupant as intended during a crash, and could result in injury to the occupant. Correction update: None required as no effect on vehicle safety. See recall 04-158.
Certain vehicles have an internal component in the 2nd and 3rd row outboard seat belt retractor that could be cracked. With repeated actuation of the locking mechanism, the crack could spread to the point where the seat belt would no longer lock. In a crash, increased occupant injury could result from the no-lock condition. Correction: Dealers will inspect the outboard seat belts for specific lot numbers and replace the belts if necessary. GM is enclosing an inspection procedure for the owners to use or they can have their dealers do the inspections.
On certain Yukon Denali and Yukon XL Denali vehicles, the positive battery cable assembly that could come in contact with the steering shaft universal joint. This could eventually cause a wear through of the cable assembly convoluted conduit and cable insulation and result in intermittent electrical shorting. This could result in overheating and igniting of the cable insulation and conduit and a possible underhood fire. Correction: Dealers will inspect the positive battery cable for proper routing and reroute if necessary. Cable will also be inspected for wear of the conduit and cable insulation, and replaced if necessary.
Certain vehicles may have loose or missing rear wheelhouse plugs. Under certain operating conditions, exhaust gases can flow forward and accumulate in the rear wheelhouse. These exhaust gases could flow into the passenger compartment if the wheelhouse plug is missing or loose and may cause possible illness, unconsciousness or death. Correction: Dealers will inspect for loose or missing wheelhouse plugs, and install new plugs if necessary.