Vehicle lost engine power on the road. Light display came on stating engine reduce power. It would not pull the trailer. Had to pull over and the display went away only to appear again later. We brought vehicle to chevrolet dealer . The part needed to hopefully fix is on backorder. There is also recall with no available remedy. This is a revenue generating vehicle. We had this problem happen on and off. Dealer didn't want us to bring in until the light physically stayed on dashboard for them to assess vehicle. It was now been in shop for over 2 months
The worst 2020 Chevrolet Silverado 4500 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Brakes1
- Engine1
- Transmission1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Brakes1
- Engine1
- Transmission1
Recalls 2
Service brakes, hydraulic: power assist
- What is wrong
- General Motors, LLC (GM) is recalling certain 2019-2020 Chevrolet Silverado Medium Duty 4500HD, 5500HD, and 6500HD vehicles. These vehicles were remedied under the federal safety agency 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
- 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 beginning November 6, 2025.
Recall number 25V768000 · Recall details
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 2020 Chevrolet Silverado 4500 695
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
- 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
- PI to help diagnose A/C concern
- This PI instructs technicians to inspect the ground plane on MD Silverado vehicles with DTC P251A
- Unknown or other
- Unknown or other
- Unknown or other
What 2020 Chevrolet Silverado 4500 owners say
Most recent owner complaints, unedited.
Compare the 2020 Chevrolet Silverado 4500
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Questions about the 2020 Chevrolet Silverado 4500
Is the 2020 Chevrolet Silverado 4500 reliable?
Owners have filed 1 complaint about the 2020 Chevrolet Silverado 4500, close to a typical Silverado 4500 model year.
What is the most common problem with the 2020 Chevrolet Silverado 4500?
Brakes, with 1 complaint. Next is engine (1).
How many recalls does the 2020 Chevrolet Silverado 4500 have?
2 recalls, covering service brakes, hydraulic.
Was there a recall on the 2020 Chevrolet Silverado 4500 brakes?
Yes, 2 recalls: 25V768000, 25V390000. Check your VIN to see if your car still needs the free repair.
VIN decoder
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