On certain motorcycles, the rear master cylinder piston retaining ring may not have been fully seated into the machined groove of the master cylinder bore at time of manufacture. If the ring was not fully secured in the machined groove, it could result in a lack of brake fluid pressure to the rear caliper. This would increase stopping distances and could affect braking control, which could increase the risk of a crash causing injury and/or damage to property.
Safety Risk
No risk description available.
Remedy
Dealers will inspect, and if necessary, replace the rear brake master cylinder.
On certain vehicles, the brake vacuum hose may not have been routed properly and could rupture, causing a loss of vacuum assistance in the braking system. This could increase stopping distances, which could result in a crash causing injury and/or damage to property.
Safety Risk
No risk description available.
Remedy
Dealers will inspect and re-route or replace the hose if damaged.
On certain vehicles, The front brake hoses may rupture. This could cause a loss of front brake function, causing increased brake pedal travel and reducing braking performance. This could result in increased stopping distances and result in a crash causing injury and/or damage to property.
On certain vehicles, the center and rear brake lines may become perforated due to corrosion. This would cause a leak in the brake system potentially increasing stopping distances, which could increase the risk of a crash causing injury and/or damage to property.
Safety Risk
No risk description available.
Remedy
Dealers will inspect vehicles and either apply an anti-corrosion coating to the 4-way joint connector and brake lines, or replace them as necessary.
On certain motorcycles, the front brake master cylinder line connection threads may corrode, which could cause a brake fluid leak and a reduction in braking performance. If operated in this condition, this could eventually result in a loss of front brake function. These issues could increase the risk of a crash causing injury and/or damage to property.
Safety Risk
No risk description available.
Remedy
Dealers will flush and replace brake fluid, as well as in inspect the master cylinder and replace as necessary.
On certain vehicles, a diode in the stop lamp circuit could fail, which could result in the brake lights failing to illuminate when the brake pedal is depressed, increasing the risk of a crash causing property damage and/or personal injury.
On certain vehicles, underbody brake pipe unions may not have been tightened to specification. This could cause a loss of brake fluid, illuminating the brake warning lamp and causing the instrument cluster to display the warning message "Fluid Level Low". If operated in this condition, brake system function could be affected, potentially increasing stopping distances or causing a loss of brake system function. This could increase the risk of a crash causing injury and/or damage to property. Loss of brake fluid could also affect brake pressure switch function, which could cause the vehicle to fail to start.
Safety Risk
No risk description available.
Remedy
Dealers will inspect, and if necessary, top up the brake fluid and tighten the joints to the correct torque specification.
On certain motorcycles, a defective rear brake master cylinder could cause a reduction in rear braking performance. This could increase stopping distances or cause rear brake fade, increasing the risk of a crash causing injury and/or damage to property.
Safety Risk
No risk description available.
Remedy
Dealers will replace the brake master cylinder with a revised unit.
On certain vehicles, the brake lamp switch can bend and/or corrode. In some circumstances, the ABS or the Brake Warning lamp may illuminate. Bending or corrosion to the brake lamp switch could lead to inoperative brake lamps, which could increase the risk of crash causing injury and/or damage to property.
Safety Risk
No risk description available.
Remedy
Dealers will apply a protector and waterproof cover with an extension harness to prevent bending and corrosion.
On certain vehicles, a defect in the brake booster may prevent the brake pedal from returning properly. An unexpected change in pedal position could increase the risk of a crash causing injury/damage to property.
Safety Risk
No risk description available.
Remedy
Dealers will inspect, and if required, replace the brake booster with a revised unit.
Certain vehicles fail to comply with the requirements of Canada Motor Vehicle Safety Standard 135 - Brake Systems. The electronic parking brake may not fully release, which could cause the brakes to drag. In this condition, the parking brake indicator also may not illuminate even though the parking brake is engaged, contrary to the requirements of the standard. Brake drag could affect vehicle acceleration and cause undesired deceleration, excessive brake heat, and premature wear to some brake components. If the brake drag is significant or if the vehicle is operated for an extended period of time in this condition, there is a potential for the rear brakes to generate significant heat, smoke and sparks.
Safety Risk
No risk description available.
Remedy
Dealers will update the electronic parking brake software.
On certain vehicles, bolts that hold the brake caliper to the backing plate may not have been tightened to specification, and could allow the brake caliper to separate from the backing plate. This would disable braking at the affected wheel, which could cause the vehicle to pull to one side during braking, and also increase stopping distances, which could result in a crash causing injury and/or damage to property.
Safety Risk
No risk description available.
Remedy
Dealers will inspect bolts and repair as required.
On certain vehicles, vacuum pump function could be affected by software defects and/or blockage of the pump exhaust hole. An inoperable vacuum pump would affect power brake system function, increasing brake pedal effort and potentially increasing stopping distances, which could increase the risk of a crash causing injury and/or damage to property.
Safety Risk
No risk description available.
Remedy
Dealers will update vehicle software and replace the vacuum pump as necessary.
On certain vehicles equipped with a 3.0L TDI engine, a contaminated check valve may allow engine oil to enter the brake booster. Over time, this could degrade the brake booster diaphragm and cause it to rupture, affecting power assist brake performance and potentially causing a complete loss of power assist, resulting in increased brake pedal effort. An unexpected increase in pedal effort could increase the risk of a crash causing property damage and/or personal injury the risk of a crash.
Safety Risk
No risk description available.
Remedy
Dealers will inspect the brake booster system for oil contamination and replace a vacuum line, as necessary.
On certain vehicles, leaks could develop where the rear brake hoses connect to the rear calipers. This would cause a loss of brake fluid and illuminate the brake warning lamp in the instrument panel. If operated in this condition, brake system function could be affected, potentially increasing stopping distances and increasing the risk of a crash causing injury and/or damage to property.
Safety Risk
No risk description available.
Remedy
Dealers will replace the sealing washers on the rear caliper to hose joint.
On certain motorcycles, the combined brake system’s secondary master cylinder may cause the rear brakes to drag. Unexpected braking may adversely affect vehicle stability, which could result in a crash. As well, continued riding with the rear brake engaged/dragging may generate enough heat to cause the rear brake to catch fire. These issues could result in property damage and/or personal injury. Note: This recall is superseded by recall 2015488.
On certain vehicles, brake lines connecting the master cylinder to the Hydraulic Electronic Control Unit may be defective and could either leak, or restrict fluid flow in the brake line. This would either cause a gradual loss of brake fluid and illuminate the brake warning lamp in the instrument panel, or restrict fluid flow to the brake calipers, which could illuminate the vehicle stability control warning lamp in the instrument cluster. Either condition could affect brake system function, potentially increasing stopping distances and the risk of a crash causing injury and/or damage to property.
Safety Risk
No risk description available.
Remedy
Dealers will replace the brake hoses with a revised part.
Certain vehicles may contain brake fluid that does not inhibit corrosion, which could cause corrosion to form in the anti-lock brake (ABS) module. This could result in longer brake pedal travel and/or reduced brake performance, vehicle instability and a rear wheel lock condition, which may increase the risk of a crash causing property damage and/or personal injury.
Safety Risk
No risk description available.
Remedy
Dealers will inspect the ABS module and, if necessary, replace the module. Dealers are to also change the brake fluid and provide a supplement to the Owner Manual that instructs customers to use only GM recommended brake fluid.
On certain model vehicles outfitted with enhanced cruise control and without side fairings, a programming error could result in the active braking feature of the enhanced cruise control to be disabled. As a result, the enhanced cruise control system may not automatically activate the brakes as designed. This could possibly result in a crash causing injury and/or property damage.
Safety Risk
No risk description available.
Remedy
Dealers will update the software of the control unit.
On certain vehicles, the front brake calipers may have been manufactured incorrectly and could fracture. This would result in a reduction in braking effectiveness and an increase in braking distances, increasing the risk of a crash causing injury and/or damage to property.
Safety Risk
No risk description available.
Remedy
Dealers will inspect and, if necessary, replace the front brake calipers.
