2020 Chevrolet Silverado 1500 Problems

The transmission control valve may fail and cause the rear wheels to lock up. Rear wheel lock up increases the risk of a crash.

Fix: Dealers will inspect the vehicles and update the transmission control software, free of charge.

The transmission control valve may fail and cause the rear wheels to lock-up. Rear wheel lock-up can increase the risk of a crash.

Fix: Dealers will install new transmission control module software, free of charge. GM will provide a special coverage program to cover the repair of transmissions that are identified by the remedy software as containing a defective control valve.

The 17" spare tire provided with the vehicle is not compatible for use with the accessory wheels, which can cause the anti-lock brake system (ABS) to not function properly under certain conditions. An ABS system that does not function properly can increase the risk of a crash.

Fix: Dealers will provide a new 17" spare tire and wheel assembly that is compatible with the accessory wheels, free of charge. Dealers will also apply a new spare tire information label, and provide owners with an owner's manual insert clarifying which spare tire to use with the accessory road tires and with the 17" original tires.

The affected tires were cured for too long during production. Over cured tires may develop a break in the sidewall resulting in sudden air loss or a belt edge separation which could lead to a tread/belt loss. Either condition can cause a loss of vehicle control, increasing the risk of a crash.

Fix: GM will notify owners, and dealers will inspect the tires, replacing them as necessary, free of charge.

The seat belt brackets may not be secured to the seat frame in the front-row center seating position. If a seat-belt bracket is not secured, the seat belt may not properly restrain an occupant in the front-row center seat position, increasing the risk of injury in a crash.

Fix: GM will notify owners, and dealers will inspect left-side and right-side front-row center seat-belt bracket attachments and reassemble it correctly as necessary, free of charge.

The vehicles may have been manufactured with Continental tires that were overcured. Overcured tires may experience a carcass break in the sidewall resulting in a sudden air loss or could develop a belt edge separation which could lead to partial or full tread/belt loss. Either condition increases the risk of a crash.

Fix: GM will notify owners, and dealers will inspect vehicles and replace tires that have DOT number and production mold number combinations identified by Continental, free of charge.

One of the driveshaft joints may not have been properly welded, causing the driveshaft to separate while the vehicle is moving. If the driveshaft separates, there may be a loss of propulsion, increasing the risk of crash.

Fix: GM will notify owners, and dealers will replace the driveshaft, free of charge. The recall is expected to begin December 2020.

The diffuser component of the Roof-Rail Air Bag (RRAB) inflator may not have been properly crimped to the inflator and could separate from the inflator during air bag deployment. If the diffuser separates from the inflator during deployment, RRAB performance may be degraded, increasing the risk of injury in a crash.

Fix: GM will notify owners, and dealers will replace the suspect RRAB modules, free of charge.

The bolts used to attach the front and/or rear brake calipers may have not been heat treated and may break under load. Broken caliper bolts can reduce brake performance or interfere with wheel rotation and increase the risk of a crash.

Fix: GM will notify owners, and dealers will replace the brake caliper bolts, free of charge.

The battery positive (B+) cable rings may have been manufactured with excessive glue, potentially causing an intermittent electrical connection between the B+ cable and alternator. An intermittent electrical connection between the B+ battery cable and the alternator could cause the vehicle to stall, increasing the risk of a crash. The intermittent connection could also lead to electrical arcing, which could generate sufficient heat to damage surrounding material, increasing the risk of a fire.

Fix: GM will notify owners, and dealers will inspect for the presence of glue or other contamination at the B+ cable attachment to the alternator and clean the connection and reattach the B+ cable connection, as necessary. If arcing has damaged the cable, nut, or alternator, the dealer will replace the damaged components.

The fuel pump may be missing a pressure regulator, allowing for over-pressurization of the fuel system. Over-pressurization can crack the fuel pump and cause leaks, increasing the risk of a fire in the presence of an ignition source.

Fix: GM will notify owners, and dealers will replace the fuel pump, free of charge.

When the front seat belt pretensioners deploy, hot gas may vent through an opening in the pretensioner bracket, possibly igniting the carpet. A vehicle fire could result if materials ignite inside the vehicle.

Fix: GM will notify owners, and dealers will close off the opening in the pretensioner bracket, free of charge.