2020 Chevrolet 4500HD recalls (5)

Every 2020 Chevrolet 4500HD recall

Each campaign as NHTSA published it: what is wrong, what can happen, and the fix. Newest first.

• Service Brakes, Hydraulic · NHTSA 23V266000

  Apr 13, 2023Service Brakes, HydraulicPark outside

  Problem

  General Motors. LLC (GM) is recalling certain 2019-2023 Chevrolet 4500HD, 5500HD, and 6500HD Medium-Duty trucks. The brake pressure sensor assembly may leak brake fluid into the brake pressure switch and cause an electrical short-circuit.

  Risk

  An electrical short in the brake pressure switch can overheat the circuit and increase the risk of a fire while driving or parked.

  Fix

  Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will replace the master cylinder pressure sensor and inspect the wire harness, replacing it, if necessary, free of charge. Owner notification letters were mailed July 11, 2023. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N222375270.

  Full recall details for 23V266000 →

• Suspension · NHTSA 21V194000

  Mar 19, 2021Suspension:Rear:Springs:Leaf Spring Assembly:U-Bolt, Leaf Spring To Axle

  Problem

  Isuzu Technical Center of America, Inc. (Isuzu) is recalling certain 2015-2017 Isuzu NPR, Reach, 2016-2020 Isuzu NPR XD, NPR HD, NQR, 2016-2021 Isuzu NRR, 2017-2020 Chevrolet 4500XD, 4500HD, 5500HD, and 2020 Chevrolet 5500XD vehicles. The U-bolt nuts for the rear axle may not have been properly tightened and may loosen, causing the axle to misalign.

  Risk

  The misalignment may cause the propeller shaft to separate, causing a loss of power to the rear wheels and a stall, increasing the risk of a crash.

  Fix

  Isuzu will notify owners, and dealers will inspect and, if needed, replace and tighten the rear axle U-bolt nuts, free of charge. The recall began on April 23, 2021. Owners may contact Isuzu customer service at 1-866-441-9638. Isuzu's number for this recall is V2103.

  Full recall details for 21V194000 →

• Electrical System · NHTSA 20V319000

  May 29, 2020Electrical System:Software

  Problem

  General Motors is recalling certain 2019-2020 Chevrolet 4500HD, 5500HD, and 6500HD Medium Duty trucks. If the vehicle's body control module (BCM) loses communication with the vehicle's electronic brake control module (EBCM), the EBCM software programming may not illuminate the vehicle's ABS malfunction indicator light (MIL). As such, these vehicles fail to comply with Federal Motor Vehicle Safety Standard (FMVSS) Number 105, "Hydraulic and Electric Brake Systems."

  Risk

  If a driver is unaware that the ABS system is malfunctioning, there may be an increased risk of a crash.

  Fix

  GM will notify owners, and dealers will update the software calibration for the body control module (BCM). The recall began June 29, 2020. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N202305070.

  Full recall details for 20V319000 →

• Seat Belts · NHTSA 20V025000

  Jan 17, 2020Seat Belts:Front:Webbing

  Problem

  Isuzu Technical Center of America, Inc. (Isuzu) is recalling certain 2020 Isuzu NPR HD, NPR XD, NQR and NRR and Chevrolet 4500HD, 4500XD, 5500HD and 5500XD and 2019 Isuzu NPR HD GAS, NPR GAS and Chevrolet 4500 and Chevrolet 3500 vehicles equipped with a dual mode belt locking mechanism seat belt assembly. Due to a manufacturing issue, the seat belt webbing locking mechanism may not properly restrain the occupant as intended.

  Risk

  In the event of a crash, if the occupant is not properly restrained, there is an increased risk of injury.

  Fix

  Isuzu will notify owners, and dealers will inspect and replace the seat belt assembly, as necessary, free of charge. The recall began February 20, 2020. Owners may contact Isuzu customer service at 1-866-441-9638 or Chevrolet customer service at 1-800-222-1020. Isuzu's number for this recall is V2001.

  Full recall details for 20V025000 →

• Wheels · NHTSA 19V835000

  Nov 20, 2019Wheels:Lugs/Nuts/Bolts/Studs

  Problem

  Isuzu Technical Center of America, Inc. (Isuzu) is recalling certain 2017-2020 NPR-HD, 2019-2020 NPR-XD, NQR, NRR, Chevrolet 4500HD, Chevrolet 5500HD and Chevrolet 5500XD, and 2020 Chevrolet 4500XD vehicles. The lug nuts on the rear outer wheels may not have been properly tightened when installed onto the rear axles.

  Risk

  If the lug nuts were not properly tightened, they can loosen, causing the to wheel separate from the vehicle, increasing the risk of a crash.

  Fix

  Isuzu will notify owners, and dealers will inspect the rear outer wheel lug nuts and tightening or replacing them as necessary, free of charge. The recall began December 20, 2019. Owners may contact Isuzu customer service at 1-866-441-9638 or Chevrolet customer service at 1-800-222-1020. Isuzu's number for this recall is V1906.

  Full recall details for 19V835000 →

2020 Chevrolet 4500HD complaints and service bulletins

Chevrolet has issued at least 384 technical service bulletins (repair instructions to dealers) for this model year. Complaints are unverified owner reports; a recall is the manufacturer’s admission of a safety defect.

Service bulletins by component

• Equipment (134)
• Unknown Or Other (67)
• Engine and Engine Cooling (64)
• Electrical System (63)
• Engine (36)
• Power Train (36)

Read Chevrolet 4500HD owner complaints and bulletins, every year

Other Chevrolet 4500HD model years

← 2019 Chevrolet 4500HD · 2021 Chevrolet 4500HD →

• 2023 (1)
• 2022 (2)
• 2021 (2)
• 2020 (5)
• 2019 (5)
• 2018 (1)
• 2017 (1)

All Chevrolet 4500HD recalls, every model year