The contact owns a 2023 GM GM515. The contact stated that the vehicle was designed with a 12-Volt power brake booster auxiliary pump. The contact stated that upon parking and turning off the vehicle, the power brake booster auxiliary pump was running and making a loud sound. The contact stated that upon starting the vehicle, the pump stopped running; however, the failure recurred while the vehicle was turned off. The brake warning light was illuminated. The contact stated that upon disconnecting the power brake booster auxiliary pump wiring cable, the failure ceased; however, the failure recurred upon reconnecting the power brake booster auxiliary pump wiring cable. The vehicle was taken to the dealer, where it was diagnosed that the brake pressure switch was faulty due to brake fluid intrusion. The dealer informed the contact that the vehicle was not covered under GM Campaign Number: N222375270. The dealer replaced the brake pressure switch. The vehicle was repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 59,500.
The worst 2023 Chevrolet Silverado 4500 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Brakes1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Brakes1
Recalls 1
Service brakes, hydraulic: brake fluid low warning: switch/sensor/float
- What is wrong
- 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
- 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.
Recall number 25V390000 · Recall details
Technical service bulletins for the 2023 Chevrolet Silverado 4500 428
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This service bulletin provides information about GM Accessories
- Unknown or other
- Unknown or other
- Unknown or other
- This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
- This PI was created to help address the correct repair regarding a low coolant message on the DIC
- Unknown or other
- Unknown or other
- PI to help diagnose A/C concern
- Unknown or other
What 2023 Chevrolet Silverado 4500 owners say
Most recent owner complaints, unedited.
Compare the 2023 Chevrolet Silverado 4500
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Questions about the 2023 Chevrolet Silverado 4500
Is the 2023 Chevrolet Silverado 4500 reliable?
Owners have filed 1 complaint about the 2023 Chevrolet Silverado 4500, close to a typical Silverado 4500 model year.
What is the most common problem with the 2023 Chevrolet Silverado 4500?
Brakes, with 1 complaint.
How many recalls does the 2023 Chevrolet Silverado 4500 have?
1 recall, covering service brakes, hydraulic.
Was there a recall on the 2023 Chevrolet Silverado 4500 brakes?
Yes, 1 recall: 25V390000. Check your VIN to see if your car still needs the free repair.
VIN decoder
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