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Search 34,354 chart rows transcribed from manufacturer towing guides. See the engine, cab, axle, required equipment, and source together. These are published comparison ratings; your truck’s equipment and loaded weight still matter.

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2005 · OEM chart

GMC Sierra 2500HD

6.6L V8 Turbo Diesel · 2WD · Regular Cab · Not specified in chart · 3.73 axle

Equipment: GM model code C25903; Automatic or manual transmission

Chart engine column: 6.6L V8 TURBO DIESEL (RATINGS AUTO. OR MANUAL TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Cab type derived from GM model-code suffix '03' as decoded elsewhere in the same GM document.

Page 33, Trailering Information, C/K 25 Series Heavy Duty Pickup Models (Chevy Silverado and GMC Sierra), model C25903, column 6.6L V8 TURBO DIESEL, axle 3.73

Fifth-wheel
16,000lb
GCWR
22,000 lb

2005 · OEM chart

GMC Sierra 2500HD

6.6L V8 Turbo Diesel · 2WD · Extended Cab · Not specified in chart · 3.73 axle

Equipment: GM model code C25753; Automatic or manual transmission

Chart engine column: 6.6L V8 TURBO DIESEL (RATINGS AUTO. OR MANUAL TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Cab type derived from GM model-code suffix '53' as decoded elsewhere in the same GM document.

Page 33, Trailering Information, C/K 25 Series Heavy Duty Pickup Models (Chevy Silverado and GMC Sierra), model C25753, column 6.6L V8 TURBO DIESEL, axle 3.73

Fifth-wheel
15,700lb
GCWR
22,000 lb

2005 · OEM chart

GMC Sierra 2500HD

6.6L V8 Turbo Diesel · 2WD · Extended Cab · Not specified in chart · 3.73 axle

Equipment: GM model code C25953; Automatic or manual transmission

Chart engine column: 6.6L V8 TURBO DIESEL (RATINGS AUTO. OR MANUAL TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Cab type derived from GM model-code suffix '53' as decoded elsewhere in the same GM document.

Page 33, Trailering Information, C/K 25 Series Heavy Duty Pickup Models (Chevy Silverado and GMC Sierra), model C25953, column 6.6L V8 TURBO DIESEL, axle 3.73

Fifth-wheel
15,600lb
GCWR
22,000 lb

2005 · OEM chart

GMC Sierra 2500HD

6.6L V8 Turbo Diesel · 4WD · Regular Cab · Not specified in chart · 3.73 axle

Equipment: GM model code K25903; Automatic or manual transmission

Chart engine column: 6.6L V8 TURBO DIESEL (RATINGS AUTO. OR MANUAL TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Cab type derived from GM model-code suffix '03' as decoded elsewhere in the same GM document.

Page 33, Trailering Information, C/K 25 Series Heavy Duty Pickup Models (Chevy Silverado and GMC Sierra), model K25903, column 6.6L V8 TURBO DIESEL, axle 3.73

Fifth-wheel
15,600lb
GCWR
22,000 lb

2005 · OEM chart

GMC Sierra 2500HD

6.6L V8 Turbo Diesel · 4WD · Extended Cab · Not specified in chart · 3.73 axle

Equipment: GM model code K25753; Automatic or manual transmission

Chart engine column: 6.6L V8 TURBO DIESEL (RATINGS AUTO. OR MANUAL TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Cab type derived from GM model-code suffix '53' as decoded elsewhere in the same GM document.

Page 33, Trailering Information, C/K 25 Series Heavy Duty Pickup Models (Chevy Silverado and GMC Sierra), model K25753, column 6.6L V8 TURBO DIESEL, axle 3.73

Fifth-wheel
15,500lb
GCWR
22,000 lb

2005 · OEM chart

GMC Sierra 2500HD

6.6L V8 Turbo Diesel · 2WD · Crew Cab · Not specified in chart · 3.73 axle

Equipment: GM model code C25743; Automatic or manual transmission

Chart engine column: 6.6L V8 TURBO DIESEL (RATINGS AUTO. OR MANUAL TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Cab type derived from GM model-code suffix '43' as decoded elsewhere in the same GM document.

Page 33, Trailering Information, C/K 25 Series Heavy Duty Pickup Models (Chevy Silverado and GMC Sierra), model C25743, column 6.6L V8 TURBO DIESEL, axle 3.73

Fifth-wheel
15,400lb
GCWR
22,000 lb

2005 · OEM chart

GMC Sierra 2500HD

6.6L V8 Turbo Diesel · 2WD · Crew Cab · Not specified in chart · 3.73 axle

Equipment: GM model code C25943; Automatic or manual transmission

Chart engine column: 6.6L V8 TURBO DIESEL (RATINGS AUTO. OR MANUAL TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Cab type derived from GM model-code suffix '43' as decoded elsewhere in the same GM document.

Page 33, Trailering Information, C/K 25 Series Heavy Duty Pickup Models (Chevy Silverado and GMC Sierra), model C25943, column 6.6L V8 TURBO DIESEL, axle 3.73

Fifth-wheel
15,300lb
GCWR
22,000 lb

2005 · OEM chart

GMC Sierra 2500HD

6.6L V8 Turbo Diesel · 4WD · Extended Cab · Not specified in chart · 3.73 axle

Equipment: GM model code K25953; Automatic or manual transmission

Chart engine column: 6.6L V8 TURBO DIESEL (RATINGS AUTO. OR MANUAL TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Cab type derived from GM model-code suffix '53' as decoded elsewhere in the same GM document.

Page 33, Trailering Information, C/K 25 Series Heavy Duty Pickup Models (Chevy Silverado and GMC Sierra), model K25953, column 6.6L V8 TURBO DIESEL, axle 3.73

Fifth-wheel
15,000lb
GCWR
22,000 lb

2005 · OEM chart

GMC Sierra 2500HD

6.6L V8 Turbo Diesel · 4WD · Crew Cab · Not specified in chart · 3.73 axle

Equipment: GM model code K25743; Automatic or manual transmission

Chart engine column: 6.6L V8 TURBO DIESEL (RATINGS AUTO. OR MANUAL TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Cab type derived from GM model-code suffix '43' as decoded elsewhere in the same GM document.

Page 33, Trailering Information, C/K 25 Series Heavy Duty Pickup Models (Chevy Silverado and GMC Sierra), model K25743, column 6.6L V8 TURBO DIESEL, axle 3.73

Fifth-wheel
14,200lb
GCWR
22,000 lb

2005 · OEM chart

GMC Sierra 2500HD

6.6L V8 Turbo Diesel · 4WD · Crew Cab · Not specified in chart · 3.73 axle

Equipment: GM model code K25943; Automatic or manual transmission

Chart engine column: 6.6L V8 TURBO DIESEL (RATINGS AUTO. OR MANUAL TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Cab type derived from GM model-code suffix '43' as decoded elsewhere in the same GM document.

Page 33, Trailering Information, C/K 25 Series Heavy Duty Pickup Models (Chevy Silverado and GMC Sierra), model K25943, column 6.6L V8 TURBO DIESEL, axle 3.73

Fifth-wheel
13,400lb
GCWR
22,000 lb

2005 · OEM chart

GMC Sierra 2500HD

6.6L V8 Turbo Diesel · 2WD · Crew Cab · Not specified in chart · 3.73 axle

Equipment: GM model code C25743; Automatic or manual transmission

Chart engine column: 6.6L V8 TURBO DIESEL (RATINGS AUTO. OR MANUAL TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Cab type derived from GM model-code suffix '43' as decoded elsewhere in the same GM document.

Page 18, Trailering Information, C/K 25 Series Heavy Duty Pickup Models (Chevy Silverado and GMC Sierra), model C25743, column 6.6L V8 TURBO DIESEL, axle 3.73

Conventional
12,000lb
GCWR
22,000 lb

2005 · OEM chart

GMC Sierra 2500HD

6.6L V8 Turbo Diesel · 2WD · Extended Cab · Not specified in chart · 3.73 axle

Equipment: GM model code C25753; Automatic or manual transmission

Chart engine column: 6.6L V8 TURBO DIESEL (RATINGS AUTO. OR MANUAL TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Cab type derived from GM model-code suffix '53' as decoded elsewhere in the same GM document.

Page 18, Trailering Information, C/K 25 Series Heavy Duty Pickup Models (Chevy Silverado and GMC Sierra), model C25753, column 6.6L V8 TURBO DIESEL, axle 3.73

Conventional
12,000lb
GCWR
22,000 lb

2005 · OEM chart

GMC Sierra 2500HD

6.6L V8 Turbo Diesel · 2WD · Regular Cab · Not specified in chart · 3.73 axle

Equipment: GM model code C25903; Automatic or manual transmission

Chart engine column: 6.6L V8 TURBO DIESEL (RATINGS AUTO. OR MANUAL TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Cab type derived from GM model-code suffix '03' as decoded elsewhere in the same GM document.

Page 18, Trailering Information, C/K 25 Series Heavy Duty Pickup Models (Chevy Silverado and GMC Sierra), model C25903, column 6.6L V8 TURBO DIESEL, axle 3.73

Conventional
12,000lb
GCWR
22,000 lb

2005 · OEM chart

GMC Sierra 2500HD

6.6L V8 Turbo Diesel · 2WD · Crew Cab · Not specified in chart · 3.73 axle

Equipment: GM model code C25943; Automatic or manual transmission

Chart engine column: 6.6L V8 TURBO DIESEL (RATINGS AUTO. OR MANUAL TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Cab type derived from GM model-code suffix '43' as decoded elsewhere in the same GM document.

Page 18, Trailering Information, C/K 25 Series Heavy Duty Pickup Models (Chevy Silverado and GMC Sierra), model C25943, column 6.6L V8 TURBO DIESEL, axle 3.73

Conventional
12,000lb
GCWR
22,000 lb

2005 · OEM chart

GMC Sierra 2500HD

6.6L V8 Turbo Diesel · 2WD · Extended Cab · Not specified in chart · 3.73 axle

Equipment: GM model code C25953; Automatic or manual transmission

Chart engine column: 6.6L V8 TURBO DIESEL (RATINGS AUTO. OR MANUAL TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Cab type derived from GM model-code suffix '53' as decoded elsewhere in the same GM document.

Page 18, Trailering Information, C/K 25 Series Heavy Duty Pickup Models (Chevy Silverado and GMC Sierra), model C25953, column 6.6L V8 TURBO DIESEL, axle 3.73

Conventional
12,000lb
GCWR
22,000 lb

2005 · OEM chart

GMC Sierra 2500HD

6.6L V8 Turbo Diesel · 4WD · Crew Cab · Not specified in chart · 3.73 axle

Equipment: GM model code K25743; Automatic or manual transmission

Chart engine column: 6.6L V8 TURBO DIESEL (RATINGS AUTO. OR MANUAL TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Cab type derived from GM model-code suffix '43' as decoded elsewhere in the same GM document.

Page 18, Trailering Information, C/K 25 Series Heavy Duty Pickup Models (Chevy Silverado and GMC Sierra), model K25743, column 6.6L V8 TURBO DIESEL, axle 3.73

Conventional
12,000lb
GCWR
22,000 lb

2005 · OEM chart

GMC Sierra 2500HD

6.6L V8 Turbo Diesel · 4WD · Extended Cab · Not specified in chart · 3.73 axle

Equipment: GM model code K25753; Automatic or manual transmission

Chart engine column: 6.6L V8 TURBO DIESEL (RATINGS AUTO. OR MANUAL TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Cab type derived from GM model-code suffix '53' as decoded elsewhere in the same GM document.

Page 18, Trailering Information, C/K 25 Series Heavy Duty Pickup Models (Chevy Silverado and GMC Sierra), model K25753, column 6.6L V8 TURBO DIESEL, axle 3.73

Conventional
12,000lb
GCWR
22,000 lb

2005 · OEM chart

GMC Sierra 2500HD

6.6L V8 Turbo Diesel · 4WD · Regular Cab · Not specified in chart · 3.73 axle

Equipment: GM model code K25903; Automatic or manual transmission

Chart engine column: 6.6L V8 TURBO DIESEL (RATINGS AUTO. OR MANUAL TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Cab type derived from GM model-code suffix '03' as decoded elsewhere in the same GM document.

Page 18, Trailering Information, C/K 25 Series Heavy Duty Pickup Models (Chevy Silverado and GMC Sierra), model K25903, column 6.6L V8 TURBO DIESEL, axle 3.73

Conventional
12,000lb
GCWR
22,000 lb

2005 · OEM chart

GMC Sierra 2500HD

6.6L V8 Turbo Diesel · 4WD · Crew Cab · Not specified in chart · 3.73 axle

Equipment: GM model code K25943; Automatic or manual transmission

Chart engine column: 6.6L V8 TURBO DIESEL (RATINGS AUTO. OR MANUAL TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Cab type derived from GM model-code suffix '43' as decoded elsewhere in the same GM document.

Page 18, Trailering Information, C/K 25 Series Heavy Duty Pickup Models (Chevy Silverado and GMC Sierra), model K25943, column 6.6L V8 TURBO DIESEL, axle 3.73

Conventional
12,000lb
GCWR
22,000 lb

2005 · OEM chart

GMC Sierra 2500HD

6.6L V8 Turbo Diesel · 4WD · Extended Cab · Not specified in chart · 3.73 axle

Equipment: GM model code K25953; Automatic or manual transmission

Chart engine column: 6.6L V8 TURBO DIESEL (RATINGS AUTO. OR MANUAL TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Cab type derived from GM model-code suffix '53' as decoded elsewhere in the same GM document.

Page 18, Trailering Information, C/K 25 Series Heavy Duty Pickup Models (Chevy Silverado and GMC Sierra), model K25953, column 6.6L V8 TURBO DIESEL, axle 3.73

Conventional
12,000lb
GCWR
22,000 lb