No complaints are listed for the 2020 Chevrolet 4500HD. NHTSA's API and bulk file list none in this build.
Data build 2026-10-09.
NHTSA lists this vehicle as CHEVROLET 4500HD.
Model-generated complaint tags: No complaints are listed for tagging.
Recalls
See new recalls and investigations this week.
4 recalls.
Date: 2023-04-13. Systems: SERVICE BRAKES, HYDRAULIC.
Defect: 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.
Consequence: An electrical short in the brake pressure switch can overheat the circuit and increase the risk of a fire while driving or parked.
Remedy: 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.
Do not drive: No. Park outside: Yes.
Date: 2021-03-19. Systems: SUSPENSION.
Defect: 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.
Consequence: 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.
Remedy: 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.
Do not drive: No. Park outside: No.
Date: 2020-01-17. Systems: SEAT BELTS.
Defect: 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 restr (excerpt)
Consequence: In the event of a crash, if the occupant is not properly restrained, there is an increased risk of injury. (excerpt)
Remedy: 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. (excerpt)
Do not drive: No. Park outside: No.
Date: 2019-11-20. Systems: WHEELS.
Defect: 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.
Consequence: 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.
Remedy: 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.
Do not drive: No. Park outside: No.
Manufacturer communications
384 manufacturer communications.
Communications by system| System | Count |
|---|
| EQUIPMENT | 134 |
|---|
| UNKNOWN OR OTHER | 67 |
|---|
| ENGINE AND ENGINE COOLING | 64 |
|---|
| ELECTRICAL SYSTEM | 63 |
|---|
| ENGINE | 36 |
|---|
| POWER TRAIN | 36 |
|---|
| WHEELS | 24 |
|---|
| EQUIPMENT ADAPTIVE/MOBILITY | 17 |
|---|
11037555
Date: 2026-09-26. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
11037253
Date: 2026-09-04. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
11035340
Date: 2026-07-21. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
PI to help diagnose A/C concern
11030974
Date: 2026-04-01. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This preliminary information communicates information about how to determine if a wheel and tires size change is available.
11030091
Date: 2026-03-09. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
11030092
Date: 2026-03-09. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
11029950
Date: 2026-03-02. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC'ss
11027697
Date: 2026-01-16. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
11027701
Date: 2026-01-14. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This PI advised dealer technicians of possible causes of diesel fuel contamination in gasoline powered vehicles and advises of warranty direction.
11027601
Date: 2026-01-08. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.