2021 Chevrolet Express

The 2022-2023 Express vans equipped with the 4.3L V6/8-speed automatic or 2.8L turbodiesel/8-speed automatic combinations have defective transmission control module (TCM) software. The software error can cause harsh shifting, sudden deceleration, and the vehicle moving in an unintended direction from a stop. GM received 18 harsh shifting complaints and 5 sudden deceleration reports.

GM recall affecting 54,722 Express units. Dealers reprogram the TCM with updated software that corrects the shift logic. The repair is performed free of charge.

The transmission control valve can fail, causing a brief lockup of the rear wheels or a sudden change in vehicle direction at low speed. This is related to the TCM software issue but involves physical wear in the transmission control valve body. The condition is most likely to occur during low-speed maneuvers.

GM safety recall for TCM software update and, if wear is detected, transmission control valve body replacement. Dealers install updated software that monitors valve performance and detects excessive wear before lockup can occur.

Express vans equipped with the 6.6L gas V8 engine may have a wiring harness susceptible to short circuits. If a short occurs, drivers may receive a low battery voltage warning, the battery may die, or in worst cases, a fire can start in the engine compartment. This is a serious safety concern, especially for fleet and commercial operators.

GM recall for inspection and replacement of the affected wiring harness section. Dealers install protective conduit over the vulnerable wiring to prevent chafing and short circuits. Free of charge under recall.

The Express is based on a platform dating back to 1996, and the 2022 model retains many legacy components. Owners report issues with door hinge and latch mechanisms, rust in the rear cargo area and undercarriage, power window regulator failures, and cooling system leaks from the water pump and radiator. ABS module failures are also common.

Replace door hinges and latches as they wear. Apply rust prevention treatment to the undercarriage. Replace the water pump and radiator hoses as preventive maintenance. ABS module repair or replacement for brake warning light issues.

Owners report check engine lights related to the evaporative emissions (EVAP) system, including faulty purge valves and gas cap seal failures. The fuel level sensor can also malfunction, causing inaccurate fuel gauge readings. On diesel-equipped models, the diesel exhaust fluid (DEF) system can trigger derate conditions.

Replace the EVAP purge valve and gas cap. Replace the fuel level sending unit for inaccurate gauge readings. For diesel models, DEF injector and tank heater replacement may be needed. Clear and relearn the ECM fuel trims after repairs.

General Motors, LLC (GM) is recalling certain 2021 Chevrolet Express and GMC Savana vehicles equipped with 6.6L gasoline engines. The positive battery cable terminals may contact a fuse block assembly attachment post and cause an electrical short circuit.

A short-circuit can increase the risk of a fire.

Owners are advised to park their vehicles outside and away from structures until the repair is complete. GM will notify owners, and dealers will remove a portion of the anti-rotation tab on both positive battery cable terminals near the fuse block assembly attachments, free of charge. If too much of the tab had been removed during prior servicing, the battery cable will be replaced, free of charge. The recall began April 16, 2021. Owners may contact Chevrolet customer service at 1-800-222-1020, and GMC customer service at 1-800-462-8782. GM's number for this recall is N202325160.

General Motors LLC (GM) is recalling certain 2020 Buick Enclave, Cadillac XT4, XT5, Escalade, Escalade ESV, Chevrolet Suburban, Tahoe, Traverse, GMC Yukon, Yukon XL, 2018-2021 Chevrolet Express, GMC Savana, 2019-2020 Chevrolet Blazer, Silverado 1500, GMC Acadia, Sierra 1500, and certain Continental tires sold to the aftermarket for various model year 2018-2021 vehicles. 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.

GM will notify owners, and dealers will inspect the tires, replacing them as necessary, free of charge. The recall began March 22, 2021. Owners may contact GMC customer service at 1-888-988-7267, Buick customer service at 1-866-608-8080, Chevrolet customer service at 1-800-222-1020 or Cadillac customer service at 1-800-458-8006. GM's number for this recall is N212329050.