What are the most common Chevrolet Silverado 3500HD problems?
According to Au7o's analysis of 810+ owner reports, the 2020-2020 Chevrolet Silverado 3500HD has 4 documented issues. The most frequently reported are: DEF System Malfunction and Reduced Power, Rear Leaf Spring Breakage Under Load, Glow Plug Failure and Hard Cold Starting. Of these, 2 are rated critical and should be addressed promptly.
Is the Chevrolet Silverado 3500HD reliable?
The 2020-2020 Chevrolet Silverado 3500HD has 4 known issues documented across 810+ owner reports. 2 issues are rated critical: DEF System Malfunction and Reduced Power and Rear Leaf Spring Breakage Under Load. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Chevrolet Silverado 3500HD problems?
Repair costs for known Chevrolet Silverado 3500HD issues range from $200 to $2,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, DEF System Malfunction and Reduced Power, typically costs $300-$1,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2011-2025 Chevrolet Silverado 3500HD DEF System Malfunction and Reduced Power?
Diesel exhaust fluid (DEF) system components fail causing "Service Exhaust Fluid System" warnings and eventual speed limiting to 65 mph then 5 mph. DEF injector, heater, or quality sensor most common failure points. Repairs typically run $300-$1,500. Severity: high.
What is the 2001-2020 Chevrolet Silverado 3500HD Rear Leaf Spring Breakage Under Load?
Rear leaf springs crack or break under heavy loads or from fatigue. Common on trucks regularly loaded near GVWR. Broken spring can puncture fuel tank or damage brake lines. Repairs typically run $400-$1,000. Severity: high.
What is the 2001-2020 Chevrolet Silverado 3500HD Glow Plug Failure and Hard Cold Starting?
Glow plugs fail causing difficult cold weather starting. Can also swell and break during removal, requiring extraction. Glow plug module can also fail. Repairs typically run $200-$800. Severity: medium.
What is the 2011-2025 Chevrolet Silverado 3500HD DEF System and SCR Catalyst Failures?
The Diesel Exhaust Fluid (DEF) system is plagued with issues including DEF tank heater failure, injector clogging, quality sensor malfunctions, and SCR catalyst degradation. Any failure triggers a countdown timer that eventually limits the truck to 5 mph if not addressed. The sys… Repairs typically run $300-$2,500. Severity: medium.
