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.
Contacts:
- 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.
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Comments
Heard about this issue. Also hearing that the 2023 model year will be short for the Silverado medium duty trucks, last day to order a 2023 will be 12/02/2022, production starts 01/03/2023. 2024 MY starts early 2023. No word yet on what updates to expect for 2024.
I am a final stage mfr/ upfitter – fire engines. I have a customer with a 2021 6500HD chassis that needs to operate the PTO while creaping along in low range/ first gear, to drive a fire pump as the apparatus moves along in stop & go operations. When the brake is applied, the PTO disengages which could be a real safety issue for firefighters. No other chassis brand causes this problem, so I would expect that the issue is programming and that there is a work-a-round. Please advise ASAP.