General Motors, LLC (GM) is recalling certain 2019-2020 Chevrolet Silverado Medium Duty 4500HD, 5500HD, and 6500HD vehicles. These vehicles were remedied under NHTSA Recall 25V390 with a brake jumper wire harness that was assembled without protective tape. A wiring harness that is missing protective tape can allow the wires to become damaged.
Risk and remedy
Risk
Damaged brake jumper wires can result in power brake assist failure, increasing the risk of a crash.
Remedy
Dealers will remove the installed wire harness, apply protective tape, and reinstall the wire harness, free of charge. Owner notification letters are planned to be mailed December 22, 2025. Owners may contact GM customer assistance number at 1-866-467-9700. GM's number for this recall is N252531990. Vehicles in this recall were previously repaired under 25V390 and will need to have the new remedy completed. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov beginning November 6, 2025.
General Motors (GM) is recalling certain 2019-2024 Chevrolet Silverado Medium Duty 4500HD, 5500HD, and 6500HD vehicles. The brake pressure sensor assembly may leak brake fluid into the brake pressure switch and cause a short circuit.
Risk and remedy
Risk
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 brake pressure switch wire harness, free of charge. Owner notification letters were mailed September 11, 2025. Owners may contact GM customer assistance number at 1-866-467-9700. GM's number for this recall is N242482680. Vehicles in this recall that were previously repaired under 23V266 will need to have the new remedy completed.
General Motors LLC (GM) is recalling certain 2019 Chevrolet Silverado 4500, 5500 and 6500 vehicles and 2017-2019 Chevrolet Silverado 2500 and 3500 vehicles and GMC Sierra 2500 and 3500 vehicles equipped with Duramax 6.6 liter diesel engines and an optional engine-block heater. The engine block heater cord or the terminals that connect the heater cord to…
Risk and remedy
Risk
A short-circuit may damage the engine components and increase the risk of fire.
Remedy
GM will contact owners, dealers will replace the engine block heater, free of charge. Additionally, in Chevrolet Silverado 2500 and 3500 vehicles, dealers will install a new rerouted heater cord. The recall began December 11, 2019. Owners may contact GM customer service at 1-586-596-1733. GM's number for this recall is N182206310.
Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.
11011991This informational bulletin advises the technician of how the Soot information has changed from grams to percentage.
11011989This service bulletin provides information on the harmful effects of ethylene glycol in transmission fluid.
11011900This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
11011805This Preliminary information communicates a GM part number forreflective high temperature heat or insulating tape when repairing wiring harnesses.
11011709This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
11011205This informational bulletin explains Unscheduled Supplemental Services and the importance of GM Simplified Maintenance Schedules.
11011119This Preliminary information communicates to dealers GM is working on a solution for outdated Apps
11010576This service bulletin provides information on All hazmat parts being returned to the Warranty Parts Center (WPC) must be shipped using Central Transport. Hazardous materials should never be sent by air transportation to the WPC.
11010545This service bulletin provides information on key code security rules and information on GM keycode look-up applications (U.S).
11010495This bulletin provides information on Warranty Administration Required Operating Procedures - 8 Points (U.S. Only).
11010493This warranty administration service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
11010491This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs.
11010490This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
11010488This Warranty Administration bulletin provides information on the Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program.
11010421This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
11010418This informational bulletin provides information for dealers/technicians on Vibration Caused by Tires.
11009764This service bulletin provides information on Concerns or Questions Regarding Installation of Dealer Installed Accessories.
11009756This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global Warranty Management.
11009532This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
11009531This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
11009118This Preliminary information communicates information on adding RPO UF3 Fast Idle to a vehicle.
11009088This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto-start feature, if equipped.
11009039This warranty administration bulletin provides policy information, proper labor operation selection and causal part identification for warranty transactions (U.S. Only).
11009037This service bulletin provides information on Enhancing Field Product Reports with Digital Pictures.
11008956This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. and Canada Dealers Only).
11008906This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.
11008898The bulletin provides direction on how to locate the Temporary Service Part (TSP) form in GlobalConnect.
11007936This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid leak.
11007935This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid leak.
11007721This service bulletin provides information on AGM batteries that require less frequent charging in storage.
11007718This service bulletin explains how to identify possible DEF system contamination.
11007430This service bulletin provides information on 6.6L Duramax Possible Oil Leak Path Information.
11007429This informational bulletin advises the technician of how the Soot information has changed from grams to percentage.
11007211This Preliminary information communicates Some customers may comment on a vibration while driving.The cause of the condition may be that the wheel and tire assemblies require Road Force balance. Please open a Tac case and provide the following information. Check the valve stems are they pointing at each other (lined up)? What wheels is the vehicle equipped with steel or Aluminum? What brand are the tires goodyear or Continentals? Then follow bulletin 21-NA-270 for repair information
11007208This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.
11007155This informational bulletin advises the technician that the engine and related parts will be debited if found that the tech did not properly prepare the engine block from dirt and debris in bolt holes or if found that the block was damaged by the tech.
11007154This service bulletin provides a diagnostic aid procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe.
11007150This informational bulletin provides information on higher than expected oil consumption.
11007147This bulletin provides information on common diesel engine tick noises and how they are considered part of normal operation and no parts should be replaced for these normal operating conditions.
11007123This informational bulletin provides information on Diesel Exhaust Fluid (DEF) and the proper use of the DEF system.
Every Chevrolet Silverado 4500 model year
Bars are owner complaints, dots mark years with recalls. Select a year to open its report.