NHTSA lists 2 complaints for the 2021 Chevrolet Silverado 4500, 0 of them mention a crash and 0 mention a fire. 0 complaints mention an injury, with 0 injuries and 0 deaths reported.
Data build 2026-10-09.
NHTSA lists this vehicle as CHEVROLET SILVERADO 4500.
At a glance
Complaints
2
With crash
0
With fire
0
With injury (complaints)
0
Injuries
0
Deaths
0
Recalls
1
Do not drive recalls
0
Park outside recalls
1
Recall potential units (maximum)
62,468
Investigations
0
Open investigations
0
Manufacturer communications
503
Complaints per 100k sold unavailable. No sales source is available for this record.
Where the complaints are
Top systems
System
Complaints
Share of this vehicle's complaints
SERVICE BRAKES, HYDRAULIC
2
100.0%
Top subsystems
System
Subsystem
Complaints
One complaint can name several systems, so shares can add to more than 100 percent.
Confidence is the model's own probability for the label it chose (0 to 1), not accuracy.
Model-generated labels on tagged complaints only. Model years 2013 and newer are tagged in full; 2012 in part (see tagged_share); earlier model years have no tags. NHTSA's own flags remain separate in the complaints block.
Date: 2025-06-12. Systems: SERVICE BRAKES, HYDRAULIC.
Defect: 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. (excerpt)
Consequence: An electrical short in the brake pressure switch can overheat the circuit and increase the risk of a fire while driving or parked. (excerpt)
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 u (excerpt)
Do not drive: No. Park outside: Yes.
Investigations
0 investigations; 0 open.
Manufacturer communications
503 manufacturer communications.
Communications by system
System
Count
ENGINE AND ENGINE COOLING
124
EQUIPMENT
117
ELECTRICAL SYSTEM
94
UNKNOWN OR OTHER
88
ENGINE
51
POWER TRAIN
41
WHEELS
36
FUEL SYSTEM, DIESEL
28
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.
11037560
Date: 2026-09-26. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This PI was created to help address the correct repair regarding a low coolant message on the DIC
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.
11036392
Date: 2026-08-20. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
11035340
Date: 2026-07-21. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
PI to help diagnose A/C concern
11034769
Date: 2026-06-23. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.
11032763
Date: 2026-05-11. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
11032764
Date: 2026-05-11. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
Pi created to provide GM dealers with information on gathering information for projection issue
11031511
Date: 2026-04-14. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This PI instructs technicians to inspect the ground plane on MD Silverado vehicles with DTC P251A
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.
Notes on this record
Complaints from the API and bulk file are merged and deduplicated by ODI number; the API alone misses records.
System and subsystem counts are numbers of distinct complaints, recalls or communications that name them. One record can name several systems, so shares across systems can add to more than 100 percent; a single share never exceeds 100 percent.
Recalls are counted once per campaign, investigations once per action and manufacturer communications once per NHTSA id, even when NHTSA lists several model names for the same record.
A sales denominator is a calendar-year proxy, not the population of vehicles still in use. Rates are copied from verified pipeline output.