AutoStatsIQ
Data through Oct 2026
Model yearPark outside

2021 Chevrolet Silverado 6500

Truck, diesel, 4x2, built in United States. Owner complaints on file from Jan 13, 2023 to Mar 28, 2025.

Recalls (1)Complaints (2)Investigations (0)Bulletins (442)
Recall campaigns covering this model year162k vehicles or units across those campaigns
Owner complaints22.0 times the median 2021 truck
Severity index0.02021 trucks average 15.0
First 24 months0Complaints in its first two years
Complaints over time

Complaints about the 2021 Chevrolet Silverado 6500 peaked in 2023, with 1 filed

Owner complaints about this model year, by the year they were filed with NHTSA.

00.250.50.75120231202420252026
Source: NHTSA ODI complaints file. The lighter column runs through October.
Components

100% of complaints about the 2021 Chevrolet Silverado 6500 name brakes

Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.

Brakes
2
Lighting
1
Source: NHTSA ODI complaints file. A complaint can name more than one component; it is counted under the first.
Recalls

One recall campaign covers the 2021 Chevrolet Silverado 6500

Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.

Recall campaigns for the 2021 Chevrolet Silverado 6500
CampaignFiledSubjectComponentVehiclesRemedy
25V-390Jun 12, 2025Brake pressure sensor assembly may leak brake fluid into the brake pressure switch and cause a short circuitPark outsideBrakes62,468Part replacement
Source: NHTSA ODI recalls file.
Look up a VIN at NHTSA
Owner complaints

What owners reported about the 2021 Chevrolet Silverado 6500

The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.

2 complaints on file, page 1 of 1.

  1. Filed Mar 28, 2025Failure Feb 24, 2025Flagstaff, AZService brakes

    See attached document for complaint.

    NHTSA complaint 11651246
  2. Filed Jan 13, 2023Failure Jan 13, 2023Braddock, PAExterior lighting, Service brakes

    brake line fitting leaking at the main line pressure fitting. this caused brake fluid to leak out and loss of brakes occured.

    NHTSA complaint 11501622
Source: NHTSA ODI complaints file.
Investigations

NHTSA has not opened an investigation on this model year

Source: NHTSA ODI investigations file.
All investigations
Service bulletins

442 manufacturer communications cover this model year

Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall; the 60 most recent are listed.

  • PIP6133 Sep 26, 2026 · Service Bulletin/Repair Instructions
    This PI was created to help address the correct repair regarding a low coolant message on the DIC
  • PIT5698F Sep 26, 2026 · Service Bulletin/Repair Instructions
    This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
  • PIP4902W Sep 4, 2026 · Service Bulletin/Repair Instructions
    This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
  • PIC6551C Aug 20, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
  • PIT5099J Jul 21, 2026 · Service Bulletin/Repair Instructions
    PI to help diagnose A/C concern
  • PIT5966F Jun 23, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.
  • PIC6423A May 11, 2026 · Service Bulletin/Repair Instructions
    Pi created to provide GM dealers with information on gathering information for projection issue
  • PIC6551B May 11, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
  • PIP6108 Apr 14, 2026 · Service Bulletin/Repair Instructions
    This PI instructs technicians to inspect the ground plane on MD Silverado vehicles with DTC P251A
  • PIT3271Q Apr 1, 2026 · Service Bulletin/Repair Instructions
    This preliminary information communicates information about how to determine if a wheel and tires size change is available.
  • PIP6104 Mar 9, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
  • PIP4902V Mar 9, 2026 · Service Bulletin/Repair Instructions
    This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
  • PIT6425D Mar 2, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC'ss
  • PIT6480 Jan 29, 2026 · Service Bulletin/Repair Instructions
    This preliminary information communicates an issue with how to repair a brake fluid leak at the B356 Brake Pipe Pressure Switch connector.
  • PIP6098 Jan 14, 2026 · Service Bulletin/Repair Instructions
    This PI advised dealer technicians of possible causes of diesel fuel contamination in gasoline powered vehicles and advises of warranty direction.
  • PIT6425C Jan 16, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
  • PIP4902U Jan 8, 2026 · Service Bulletin/Repair Instructions
    This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
  • 25-NA-156 Jun 7, 2025 · Service Bulletin/Repair Instructions
    This service bulletin provides information on Tire Sidewall Irregularities.
  • 00-06-01-026R Jun 5, 2025 · Service Bulletin/Repair Instructions
    This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
  • PIT5214G Nov 20, 2025 · Service Bulletin/Repair Instructions
    This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customer’s vehicles that exhibit vibration conditions without utilizing the support of Genera…
  • 23-NA-153 May 15, 2025 · Service Bulletin/Repair Instructions
    The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal for the delay.
  • PIT6425B Oct 18, 2025 · Service Bulletin/Repair Instructions
    This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
  • PIC6551A Oct 16, 2025 · Service Bulletin/Repair Instructions
    This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
  • PIT6425A Oct 17, 2025 · Service Bulletin/Repair Instructions
    This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
  • PIT6440 Oct 4, 2025 · Service Bulletin/Repair Instructions
    The Driver Information Center may display a message of Transport Mode On after the ignition is cycled.
  • PIT6145A Sep 15, 2025 · Service Bulletin/Repair Instructions
    This Preliminary information communicates information to verify if the vehicle frame has been lengthened or shorted as a result of the vehicle upfit. Dealer to refer to GM Upfitter bulletin 185 if frame has been modified.
  • 13598 Sep 9, 2025 · Other
    New Vehicle Monitoring Programs Section in IVH
  • PIP4902T Aug 14, 2025 · Service Bulletin/Repair Instructions
    This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
  • PIC5650M Aug 7, 2025 · Service Bulletin/Repair Instructions
    This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B306…
  • PIP5601C Jul 18, 2025 · Service Bulletin/Repair Instructions
    This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
  • PIP5601B Jul 18, 2025 · Service Bulletin/Repair Instructions
    This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
  • PIT5691E Jul 3, 2025 · Service Bulletin/Repair Instructions
    This Preliminary information communicates the need to Reference the latest version of GM Upfitter Integration Bulletin 149 for deleting the front or rear fuel tank of a chassis cab truck with RPO NSQ dual fuel tanks.
  • PIT5691E Jul 3, 2025 · Service Bulletin/Repair Instructions
    This Preliminary information communicates the need to Reference the latest version of GM Upfitter Integration Bulletin 149 for deleting the front or rear fuel tank of a chassis cab truck with RPO NSQ dual fuel tanks.
  • 15-NA-010 May 7, 2025 · Service Bulletin/Repair Instructions
    This service bulletin provides information to dealership personnel for new vehicles with less than 1,000 miles that may not pass California smog inspection or smog inspection in other states.
  • PIT6180A Jun 10, 2025 · Service Bulletin/Repair Instructions
    This Preliminary information communicates assistance in locating the Rear seat belt comfort guides in the parts catalog.
  • PIP4902S Jun 9, 2025 · Service Bulletin/Repair Instructions
    This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
  • N252494770 Jun 17, 2025 · Service Campaign
    Amendments to the Song-Beverly Act (SBA) California warranty law provides vehicle owners with an opportunity to submit a written notice to GM before filing a lawsuit seeking a vehicle repurchase. If such a notice is not provided to GM, then the vehicle owne…
  • PI0281L Apr 17, 2025 · Service Bulletin/Repair Instructions
    This preliminary informational (PI) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers.
  • 25-NA-100 Apr 18, 2025 · Service Bulletin/Repair Instructions
    This warranty administration bulletin provides policy information on vehicles outside of a California Emissions State who move to and register their vehicle in a California Emission State may be entitled to the 7 year, 70,000-mile Emission Select State Comp…
  • PIT5074R May 30, 2025 · Service Bulletin/Repair Instructions
    This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.
  • PIT5074R May 30, 2025 · Service Bulletin/Repair Instructions
    This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.
  • PIT5074R May 30, 2025 · Service Bulletin/Repair Instructions
    This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.
  • PIT5966E May 22, 2025 · Service Bulletin/Repair Instructions
    This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.
  • 07-00-89-037W Apr 8, 2025 · Service Bulletin/Repair Instructions
    This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs.
  • 25-NA-052 Mar 25, 2025 · Service Bulletin/Repair Instructions
    This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to oil in system.
  • 13-08-116-001K Mar 31, 2025 · Service Bulletin/Repair Instructions
    The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.
  • 24-NA-098 Mar 21, 2025 · Service Bulletin/Repair Instructions
    This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.
  • 25-NA-065 Mar 21, 2025 · Service Bulletin/Repair Instructions
    This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
  • 15-06-03-001F Mar 12, 2025 · Service Bulletin/Repair Instructions
    This service bulletin provides information to diagnose batteries that have set for a long period of time and/or cold weather climates and testing those batteries.
  • 25-NA-052 Mar 4, 2025 · Service Bulletin/Repair Instructions
    This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to oil in system.
  • 17-NA-073 Mar 5, 2025 · Service Bulletin/Repair Instructions
    This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
  • 11-00-89-005Y Feb 22, 2025 · Service Bulletin/Repair Instructions
    This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).
  • 05-08-51-001L Feb 20, 2025 · Service Bulletin/Repair Instructions
    This informational bulletin provides a procedure on how to remove the paint stain that may present itself under the shipping film.
  • 16-NA-109 Feb 18, 2025 · Service Bulletin/Repair Instructions
    This service bulletin provides a procedure inspecting for excess grease or Sealant on the Exterior of the steering gear due to seeing grease or sealant on certain locations on the gear.
  • 07-00-89-037V Feb 13, 2025 · Service Bulletin/Repair Instructions
    This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs.
  • 23-NA-064 Jan 29, 2025 · Service Bulletin/Repair Instructions
    This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships.
  • 22-NA-244 Jan 30, 2025 · Service Bulletin/Repair Instructions
    This warranty administration service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
  • 22-NA-074 Jan 30, 2025 · Service Bulletin/Repair Instructions
    This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system.
  • 21-NA-043 Jan 31, 2025 · Service Bulletin/Repair Instructions
    This 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.
  • 21-NA-135 Jan 28, 2025 · Service Bulletin/Repair Instructions
    This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.
Source: NHTSA manufacturer communications files.
About service bulletins