GMC Yukon

Issue: On certain vehicles, the automatic headlamps may not turn on soon enough as it becomes dark outside. Canadian regulations require automatic headlamps to turn on when the ambient light level drops below a certain point (1000 lux). Safety Risk: Headlamps that don't turn on as it becomes dark outside could reduce visibility and increase the risk of a crash. Corrective Actions: General Motors will notify owners by mail and send a wireless over-the-air software update to eligible vehicles to update the body control module (BCM) software. Alternatively, you may schedule an appointment to have the update performed at a GM dealership.

Issue: On certain vehicles, the daytime running lamps (DRLs) may stay on when the headlamps are on. Canadian regulations require the DRLs to turn off when the headlamps are on. Safety Risk: Daytime running lamps that stay on could cause glare for oncoming drivers and increase the risk of a crash. Corrective Action: General Motors will notify owners by mail and and send a wireless over-the-air software update to eligible vehicles to update the body control module (BCM) software. Alternatively, you may schedule an appointment to have the update performed at a GM dealer.

Issue: On certain vehicles, parts inside the rear axle shafts may not have been manufactured properly. Over time, this could lead to wear that can cause noise and vibration. If you continue to drive the vehicle with these symptoms, an axle shaft could seize and cause a loss of power to the wheels. Safety Risk: A loss of power to the wheels could increase the risk of a crash. Corrective Actions: General Motors will notify owners by mail and instruct you to take your vehicle to a dealer to replace the left and/or right-rear axle shafts.

Issue: On certain vehicles, the outboard seat belts for the third-row seat may have been installed incorrectly. As a result, the seat belts could be mis-routed or damaged by sharp edges on the seat-folding parts. Safety Risk: A damaged seat belt could break in a crash and increase the risk of injury. Corrective Actions: General Motors will notify owners by mail and instruct you to take your vehicle to a dealer to inspect the third-row outboard seat belts for correct routing and damage. The seat belt path will be corrected if required. Damaged seat belts will be replaced.

Issue: On certain vehicles, the seat belts may have been installed with the wrong bolts. As a result, the seat belt may not be properly attached and may not work as designed in a crash. Safety Risk: A seat belt that does not work properly could increase the risk of injury in a crash. Corrective Actions: General Motors will notify owners by mail and instruct you to take your vehicle to a dealer to replace the seat belt bolts, as necessary.

Issue: On certain vehicles, there may be an error in the electronic-brake control module software. This could cause the driveline-protection system to activate when a wheel-speed sensor fails. If this happens, the brakes could apply and cause the vehicle to pull to one side. Note: This recall only affects vehicles equipped with four-wheel drive, a 5.3-L engine, and a 3.08 ratio rear axle. The problem can only occur when the vehicle is in four-wheel drive or automatic mode, and travelling at a speed between 66 and 97 km/h (41 and 60 mph). A wheel-speed sensor failure will cause the electronic stability control (ESC) and anti-lock braking system (ABS) warning lights to turn on, and a "Service StabiliTrak" message to display. Safety Risk: A vehicle that suddenly pulls to one side could increase the risk of a crash. Corrective Actions: General Motors will notify owners by mail and instruct you to take your vehicle to a dealer to update the electronic-brake control module software. General Motors advises that using two-wheel-drive mode can eliminate the risk until the recall repair is completed.

Issue: On certain vehicles, there could be a reduction in power brake assist due to a decrease in output from the vacuum pump. This could cause a hard brake pedal and an increase in brake pedal effort to stop the vehicle. Safety Risk: A sudden increase in brake pedal force could lead to an increase in stopping distance. This could increase the risk of a crash. Corrective Actions: The company will notify owners by mail and instruct them to take their vehicle to a dealer to reprogram the electronic brake control module.

On certain vehicles, the sensing and diagnostic module (SDM), which controls airbag and pretensioner deployment, contains a software defect which may prevent the deployment of frontal airbags and pretensioners in certain circumstances. Failure of frontal airbags and seatbelt pretensioners to deploy in a crash (when warranted) could increase the risk of injury. Correction: Dealers will reflash the SDM with new software. In vehicles with any previous deployment events recorded in the SDM, the dealers will replace the existing SDM with a new SDM containing the latest software.

On certain vehicles, the sensing and diagnostic module (SDM), which controls airbag and pretensioner deployment, contains a software defect which may prevent the deployment of frontal airbags and pretensioners in certain circumstances. Failure of frontal airbags and seatbelt pretensioners to deploy in a crash (when warranted) could increase the risk of injury. Correction: Dealers will reflash the SDM with new software. In vehicles with any previous deployment events recorded in the SDM, the dealers will replace the existing SDM with a new SDM containing the latest software. Note: This recall affects 2014-2017 model year Sierra LD/Silverado LD models and 2015-2016 model year Sierra HD/Silverado HD model vehicles.

Certain vehicles may have been built with front upper control arms with a poor quality weld near the control arm’s bushing. If these welds were to fail, it could cause the upper control arm to deform or separate from the bushing, which could affect steering and directional control of the vehicle, increasing the risk of a crash causing injury and/or property damage. Correction: Dealers will replace the left and right front upper control arms, and perform a realignment.

On certain vehicles, exhaust components may overheat while the vehicle is idling in cold temperatures. This could cause nearby plastic components to overheat and melt, possibly resulting in smoke and/or fire and increasing the risk of injury and/or damage to property. Correction: Dealers will reprogram the engine control module. Note: This is an expansion of recall 2014-005.

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.

Certain vehicles equipped with a base radio and internal amplifier may fail to conform to Canada Motor Vehicle Safety Standard (CMVSS) 114 - Theft Protection and Rollaway Protection, and CMVSS 208 - Occupant Crash Protection. The radio may become inoperative, causing a no-chime condition and disabling the audible warning if the key is in the ignition and the driver’s door is opened, or if a front outboard seat belt is not buckled. A loss of the seat belt audible warning may increase the likelihood of a front outboard occupant being unbelted, increasing the risk of injury in a crash. Similarly, the loss of an audible warning when a key is left in the ignition may increase the risk of vehicle theft. Correction: Dealers are to program the radio with updated software.

Certain vehicles fail to conform to Canada Motor Vehicle Safety Standard (CMVSS) 102 – Transmission Control Functions, and CMVSS 114 – Theft Protection and Rollaway Prevention. A fractured park lock cable, or a defective steering lock module, may have been installed during vehicle assembly. This could allow the driver to shift out of PARK with the key in the OFF position or removed from the ignition. As well, the transmission may be shifted out of PARK without first depressing the brake pedal. The key may also be rotated to the OFF position and removed while the shifter is not in PARK. These issues could result in unintended vehicle movement, which could cause a crash resulting in property damage and/or personal injury. Correction: Dealers will inspect and, if necessary, replace the steering column assembly.

On certain vehicles, the interface between the electrical terminals of the Heating, Ventilation, and Air Conditioning (HVAC) blower relay resistor module and the wiring connector (which powers the module) may be incapable of conducting higher current levels for sustained periods of operation. In addition, moisture and other contaminants (such as road de-icing materials) may enter the fresh air intake plenum and contact the internal circuit of the module or corrode the terminals. These conditions may cause the relay resistor module or wiring connector to overheat, causing various symptoms such as: the HVAC blower may not function on certain or all blower speed settings; a burning-plastic smell or smoke may be present in the vehicle, or; the HVAC blower may run continually with the ignition in the OFF position. These warning signs could, in certain instances, be leading indicators of an impending vehicle fire, which could result in property damage and/or personal injury. Correction: Owners will be provided with additional warranty coverage for the blower motor resistor module/wiring connector overheating condition. Under this "special warranty coverage", should this condition occur within 10 years or 240,000 km from first vehicle registration, dealers will install a replacement blower motor resistor and resistor module connector.

On certain vehicles equipped with a Heated Washer Fluid System (HWFS), a short circuit on the printed circuit board for the washer fluid heater may overheat the control-circuit ground wire. A repair was implemented in a recall in 2008, however, there have been new reports of thermal incidents on heated washer fluid system modules after this improvement was installed. This situation may cause some minor distortion, but also could lead to melting of the plastic around the heated washer fluid system, or cause a fire. Correction: Dealers will permanently disable and remove the heated washer fluid module. An updated page will be provided and inserted in the Owner Manual to document the removal of the feature.

On certain vehicles equipped with a heated washer fluid system, a short circuit on the printed circuit board for the washer fluid heater may overheat the control-circuit ground wire. This situation may cause other electrical features to malfunction which could cause smoke and in some cases a fire. Correction: Dealer will install a wire harness with an in-line fuse.

On certain vehicles, the 2nd row centre occupant seat belt routing may make it difficult to position the lap portion of the safety belt low around the hips of occupants. A lap portion of the seat belt routing that is not low and snug on the hips can allow unfavourable occupant kinetics in the event of a crash. Moreover, the higher routing allows the lap belt to ride up on an occupant's abdomen instead of fitting low around their hipbones, and therefore, can expose them to more risk of abdominal and internal organ injury. Correction: Dealers will modify the guide loop.

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.

On certain vehicles, the relief valve o-ring seal within the brake hydro-boost module could fail. If this happens during braking applications, the driver may be able to hear an engine compartment noise similar to the sound that occurs when the steering wheel is turned to a full stop position. The driver could also experience a slight increase in steering efforts while braking and parking. Under certain driving conditions, a slight increase in the applied brake pedal effort may be required to achieve the same vehicle deceleration rate as prior to the seal failure. Correction: Dealers will inspect the hydro-boost module, and replace it, if necessary.

On certain vehicles, the following statements were omitted from the SIR caution label: "Never put a rear-facing child seat in the front" for the vehicles without an air bag switch or "Never put a rear-facing child seat in the front unless air bag is off" for vehicles with an air bag switch and "Sit far back as possible from the air bag". The statements are printed in the Owner's Manual. Correction: None required as instructions are in the owners manual and this is well known by the public.

Certain vehicles have an air bag sensing diagnostic module (SDM) which contains an anomaly that could result in the driver and passenger's air bag failing to deploy during certain frontal collisions. In a vehicle crash, front seat occupants may receive more severe injuries. Correction: Dealers will recalibrate the SDM.

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 vehicles, the body cross sill may contact the front, right-hand brake pipe. This could eventually wear a hole in the brake pipe over the normal life of the vehicle and result in a brake fluid leak. This could ultimately result in a partial brake system failure and increased stopping distances. Correction: Dealers will inspect for brake pipe wear and replace worn section if necessary. A spacer clip will be installed to ensure adequate clearance.

Certain vehicles do not comply with the requirements of C.M.V.S.S. 105 - Hydraulic and Electric Brake Systems. Vehicles may have a kinked brake booster vacuum supply hose which could increase stopping distances in multiple brake applications. Correction: Brake vacuum booster supply hose will be rerouted.