GM has issued a new customer satisfaction program for the Chevy Silverado MD (4500HD, 5500HD, 6500HD) over an issue regarding the truck’s power take-off (PTO) controls.
The problem: affected units of the Chevy Silverado MD may exhibit a condition in which the PTO will turn off. Additionally, the engine may stall when using the bucket equipment.
The hazards: there are currently no safety concerns associated with this customer satisfaction program or related PTO controls issue.
The fix: GM technicals are instructed to address this issue by reprogramming the engine control module. No parts are associated with this customer service program.
Affected components: power take-off controls, vehicle engine control module software.
Affected vehicles: 2019 through 2021 Chevy Silverado MD (Silverado 4500HD, Silverado 550HD, Silverado 6500HD)
Number of affected vehicles: it’s unknown at this time the number of Chevy Silverado MD units affected by this customer satisfaction program.
Owners should: Customers may contact Chevrolet directly with any concerns they may have using the contact information below.
- GM Customer Satisfaction Program number: N222378350
- Chevy U.S. Customer Service: 1-800-222-1020
As GM Authority reported last year, the Chevy Silverado 5500HD 4×4 Crew Cab Work Truck was the top-selling configuration of the Silverado Medium Duty line for the 2021 model year and 2020 model year, while the second best-selling 2021 Chevy Silverado MD truck configuration was the 5500HD 4×4 Regular Cab Work Truck.
The Chevy Silverado MD serves as the platform for a wide variety of commercial applications, including pickup trucks, emergency services, dump trucks, towing vehicles, and flat-bed trucks, as well as school buses and commercial buses. The Chevy Silverado MD platform was jointly developed by Navistar and GM, with 2019-model-year and newer vehicles powered by the 6.6L V8 L5P turbodiesel Duramax engine, paired with the Allison 10-speed automatic transmission.