GMC · Known Issues

2000 GMC C/K 2500 Problems: 3 Known Issues

2000 model year · 210+ owner reports · Updated August 2026

According to Au7o's analysis of 210+ owner reports, the 2000 GMC C/K 2500 has 3 documented known issues, with 3 rated critical. The most serious are In-Tank Fuel Pump Failure ($250-$700 repair), 6.5L Diesel PMD/FSD Module Failure ($300-$2,500 repair) and Brake Line Corrosion and Rust-Through ($400-$1,500 repair). The most commonly reported issue is In-Tank Fuel Pump Failure with 210 owner reports. Across all issues with published estimates, repair costs range from $250 to $2,500. DIY maintenance guides at au7o.io.

Frequently Asked Questions

What are the most common GMC C/K 2500 problems?

According to Au7o's analysis of 210+ owner reports, the 2000 GMC C/K 2500 has 3 documented issues. The most frequently reported are: In-Tank Fuel Pump Failure, 6.5L Diesel PMD/FSD Module Failure, Brake Line Corrosion and Rust-Through. Of these, 3 are rated critical and should be addressed promptly.

Is the GMC C/K 2500 reliable?

The 2000 GMC C/K 2500 has 3 known issues documented across 210+ owner reports. 3 issues are rated critical: In-Tank Fuel Pump Failure and 6.5L Diesel PMD/FSD Module Failure and Brake Line Corrosion and Rust-Through. 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 GMC C/K 2500 problems?

Repair costs for known GMC C/K 2500 issues range from $250 to $2,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, In-Tank Fuel Pump Failure, typically costs $250-$700 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 1996-2000 GMC C/K 2500 In-Tank Fuel Pump Failure?

The C/K 2500's in-tank electric fuel pump fails without much warning, stranding drivers. The pump works harder in trucks used for towing and in hot climates. Running the tank below 1/4 accelerates wear since fuel cools the pump. Repairs typically run $250-$700. Severity: high.

What is the 1994-2000 GMC C/K 2500 6.5L Diesel PMD/FSD Module Failure?

Same 6.5L diesel injection pump PMD failure as Chevrolet C/K 2500. The Pump Mounted Driver overheats and causes stalling. Repairs typically run $300-$2,500. Severity: high.

What is the 1999-2003 GMC C/K 2500 Brake Line Corrosion and Rust-Through?

Same brake line corrosion issue as Chevrolet C/K 2500 and all GMT800 trucks. Steel brake lines corrode under securing clips on the frame rail, especially in salt-belt states. NHTSA investigated 6 million GMT800 trucks but no recall was issued. The lines can burst without warning,… Repairs typically run $400-$1,500. Severity: high.

2000 GMC C/K 2500 Problems: 3 Known Issues

All 3 Known Issues

1996-2000 GMC C/K 2500: In-Tank Fuel Pump Failure#

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1994-2000 GMC C/K 2500: 6.5L Diesel PMD/FSD Module Failure#

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1999-2003 GMC C/K 2500: Brake Line Corrosion and Rust-Through#

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Other GMC Models

Frequently Asked Questions

What are the most common GMC C/K 2500 problems?

Is the GMC C/K 2500 reliable?

How much does it cost to fix common GMC C/K 2500 problems?

What is the 1996-2000 GMC C/K 2500 In-Tank Fuel Pump Failure?

What is the 1994-2000 GMC C/K 2500 6.5L Diesel PMD/FSD Module Failure?

What is the 1999-2003 GMC C/K 2500 Brake Line Corrosion and Rust-Through?