My truck continously displays service trailer brake system error on home screen. I have researched the error and found replacing the switch is a simple fix. However in my case this didn't work. I have tried 2 different switches, 1 being GM brand without success. Not sure what else to do. I tow a bumper pull travel trailer and fear this could cause an accident when my family and I are on a vac…
2020 Chevrolet Silverado HD electrical problems
severe 12 complaints filed with NHTSA · avg repair $850
Complaints
12
Recalls
0
Crashes
0
Avg fix
$850
What owners are reporting 2 most recent
THREE DAYS AFTER PURCHASING MY 2020 CHEVY 2500 SILVERADO, ON SEPTEMBER 28TH, 2020 AROUND 1253 I TRIED TO START MY TRUCK AND IT WOULDN'T START. THE TRUCK TURNED OVER BUT SEEMED LIKE IT WASN'T GETTING FUEL. I THEN RECEIVED A DIAGNOSTIC ALERT. AFTER CHANGING THE RELAY THE TRUCK RAN FINE. I THEN SCHEDULED TO TAKE IT IN TO THE DEALER ON OCTOBER 5,2020 TO HAVE A DIAGNOSTIC DONE ON THE TRUCK AND THEY…
Common questions
How serious is the electrical problem on the 2020 Chevrolet Silverado HD?
It's a meaningful issue. 12 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $850.
At what mileage does the electrical typically fail?
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Other problem areas on this vehicle
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Severity ratings are derived from reported crashes, fires, injuries, and fatalities.
Repair cost estimates are independent-shop national averages and may differ in your area.
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