2024 Chevrolet Silverado 2500HD electrical problems
55 of the 140 complaints owners filed with NHTSA about the 2024 Chevrolet Silverado 2500HD name the electrical system (NHTSA’s “Electrical System” heading — wiring, modules, batteries, charging, infotainment and driver displays — NHTSA's broadest heading). Filed under the same heading: 223 manufacturer bulletins. Every figure below is a document in a federal file, linked; none is a failure rate, and none is a verdict on any one car.
What owners filed about the electrical system
Source: NHTSA complaint database0 of the 55 reports a crash · 1 a fire · 0 injuries. Self-reported, unverified.
Filed per year: 2023: 19 · 2024: 12 · 2025: 16 · 2026: 8
Too few of these complaints carry an odometer reading to say when the problem shows up.
140 complaints in all about the 2024 Chevrolet Silverado 2500HD, 8 filed in 2026. The whole picture, every system →
Counts are owner reports to NHTSA, not verified defects, and scale with how many of these were sold; nothing here is a rate. NHTSA groups complaints coarsely, so “Electrical System” means the same area of the vehicle, not one fault.
Across model years: Chevrolet Silverado 2500HD electrical problems, every year on file →
In owners’ own words
Source: NHTSA complaint databaseFiled with NHTSA by the people who own these cars, about the electrical system. Quoted as written, with anything identifying removed; unverified reports — what was said, not a finding that it was true.
The GM brake controller will disconnect with the trailer being pulled. You get a message on the information center that the brake controller has lost connection with the trailer or no trailer brakes are available, something to that effect. This has happened up to 5 times in one day. You never know when this will happen.
Instrument Cluster screen blinking On/Off and showing "Service Instrument Cluster" message. Lost all indications of speed, warnings, gauges, gear selection. Could not tell if vehicle was performing correctly. All sensors appeared to be working, but indications to driver missing
I kept getting “check trailer wiring” messages followed by a “trailer disconnected” message while towing a trailer and the trailer brakes would not engage. The trailer would “reconnect” and then “disconnect” constantly while driving. I lost my trailer brakes while trying to brake down a hill.
The contact owns a 2024 Chevrolet Silverado 2500. The contact stated while driving at various speeds, the message "Check Trailer Wiring - Trailer brakes Disconnected" was displayed on the instrument panel. The contact stated that the failure caused the trailer brakes to fail to engage as needed.
Truck will not stay connected to our trailer brakes. We have a 2023 Grand Design Reflexion 270BN. The truck stays connected about 30% of the time. 70% of the time we get the following warnings “Check trailer wiring” or “service trailer brakes” and the trailer brakes are disconnected. Grand design has said this is 100% on the truck side.
What is on file about the electrical system
Source: NHTSA recalls, investigations and manufacturer communications223 manufacturer bulletins filed under this heading
The 0 newest are listed; every one is on the model year’s page. Quote the document number at a service desk — it is a diagnosis the maker has already written down.
Trouble codes named on this system
P0402 P062D C1114 P144E P0606 P2459 P2635 P242B
Codes a bulletin or an owner’s complaint about the 2024 Chevrolet Silverado 2500HD names on this model year; a code with a record of its own links it.
Common questions
Source: NHTSA complaint database, recalls and manufacturer communicationsAre electrical problems common on the 2024 Chevrolet Silverado 2500HD?
They are documented: NHTSA holds 55 owner complaints naming the electrical system on this model year (39% of everything owners filed about it), and 223 manufacturer bulletins are filed under the same heading. Whether it is a problem on one particular car is a diagnosis, not a count, and a count says nothing about how many were sold.
Is there a recall for the electrical system on the 2024 Chevrolet Silverado 2500HD?
No recall campaign is filed under this heading for this model year (there are 4 filed under other headings). A bulletin is not a recall: it carries no federal duty to repair for free.
When do electrical problems show up on the 2024 Chevrolet Silverado 2500HD?
Too few of the complaints carry an odometer reading to say. The model year's page shows the mileage curve across every system where it can.
What does NHTSA's "Electrical System" heading cover?
Wiring, modules, batteries, charging, infotainment and driver displays — NHTSA's broadest heading. Owners choose the heading when they file, so it says which area of the vehicle the complaint is about, not which part failed.