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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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2003 · OEM chart

GMC Sierra 1500

4.3L V6 · 2WD · Extended Cab · Not specified in chart · 3.73 axle

Equipment: GM model code C15753; Automatic transmission

Chart engine column: 4.3L V6 GAS (AUTOMATIC TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Chart note: C/K15 models are limited to 5,000-lb. trailer rating unless equipped with Z85 Increased Capacity or ZX3 Manual Select Damping (or Z71 Off-Road) Suspension Package. Cab type derived from GM model-code suffix '53' as decoded elsewhere in the same GM document.

Page 110, TR section, C 15/25 Series Light Duty Pickup Models (Automatic Transmission) maximum trailer ratings, model C15753, column 4.3L V6 GAS, axle 3.73

Conventional
5,200lb
GCWR
Not cited

2003 · OEM chart

GMC Sierra 1500

4.3L V6 · 4WD · Regular Cab · Not specified in chart · 3.73 axle

Equipment: GM model code K15703; Automatic transmission

Chart engine column: 4.3L V6 GAS (AUTOMATIC TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Chart note: C/K15 models are limited to 5,000-lb. trailer rating unless equipped with Z85 Increased Capacity or ZX3 Manual Select Damping (or Z71 Off-Road) Suspension Package. Cab type derived from GM model-code suffix '03' as decoded elsewhere in the same GM document.

Page 111, TR section, K 15/25 Series Light Duty Pickup Models (Automatic Transmission) maximum trailer ratings, model K15703, column 4.3L V6 GAS, axle 3.73

Conventional
5,200lb
GCWR
Not cited

2003 · OEM chart

GMC Sierra 1500

4.3L V6 · 4WD · Regular Cab · Not specified in chart · 3.73 axle

Equipment: GM model code K15903; Automatic transmission

Chart engine column: 4.3L V6 GAS (AUTOMATIC TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Chart note: C/K15 models are limited to 5,000-lb. trailer rating unless equipped with Z85 Increased Capacity or ZX3 Manual Select Damping (or Z71 Off-Road) Suspension Package. Cab type derived from GM model-code suffix '03' as decoded elsewhere in the same GM document.

Page 111, TR section, K 15/25 Series Light Duty Pickup Models (Automatic Transmission) maximum trailer ratings, model K15903, column 4.3L V6 GAS, axle 3.73

Conventional
5,100lb
GCWR
Not cited

2003 · OEM chart

GMC Sierra 1500

4.3L V6 · 2WD · Regular Cab · Not specified in chart · 3.42 axle

Equipment: GM model code C15703; Automatic transmission

Chart engine column: 4.3L V6 GAS (AUTOMATIC TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Chart note: C/K15 models are limited to 5,000-lb. trailer rating unless equipped with Z85 Increased Capacity or ZX3 Manual Select Damping (or Z71 Off-Road) Suspension Package. Cab type derived from GM model-code suffix '03' as decoded elsewhere in the same GM document.

Page 110, TR section, C 15/25 Series Light Duty Pickup Models (Automatic Transmission) maximum trailer ratings, model C15703, column 4.3L V6 GAS, axle 3.42

Conventional
5,000lb
GCWR
Not cited

2003 · OEM chart

GMC Sierra 1500

4.3L V6 · 2WD · Regular Cab · Not specified in chart · 3.42 axle

Equipment: GM model code C15903; Automatic transmission

Chart engine column: 4.3L V6 GAS (AUTOMATIC TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Chart note: C/K15 models are limited to 5,000-lb. trailer rating unless equipped with Z85 Increased Capacity or ZX3 Manual Select Damping (or Z71 Off-Road) Suspension Package. Cab type derived from GM model-code suffix '03' as decoded elsewhere in the same GM document.

Page 110, TR section, C 15/25 Series Light Duty Pickup Models (Automatic Transmission) maximum trailer ratings, model C15903, column 4.3L V6 GAS, axle 3.42

Conventional
4,900lb
GCWR
Not cited

2003 · OEM chart

GMC Sierra 1500

4.3L V6 · 2WD · Extended Cab · Not specified in chart · 3.42 axle

Equipment: GM model code C15753; Automatic transmission

Chart engine column: 4.3L V6 GAS (AUTOMATIC TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Chart note: C/K15 models are limited to 5,000-lb. trailer rating unless equipped with Z85 Increased Capacity or ZX3 Manual Select Damping (or Z71 Off-Road) Suspension Package. Cab type derived from GM model-code suffix '53' as decoded elsewhere in the same GM document.

Page 110, TR section, C 15/25 Series Light Duty Pickup Models (Automatic Transmission) maximum trailer ratings, model C15753, column 4.3L V6 GAS, axle 3.42

Conventional
4,700lb
GCWR
Not cited

2003 · OEM chart

GMC Sierra 1500

4.3L V6 · 4WD · Regular Cab · Not specified in chart · 3.42 axle

Equipment: GM model code K15703; Automatic transmission

Chart engine column: 4.3L V6 GAS (AUTOMATIC TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Chart note: C/K15 models are limited to 5,000-lb. trailer rating unless equipped with Z85 Increased Capacity or ZX3 Manual Select Damping (or Z71 Off-Road) Suspension Package. Cab type derived from GM model-code suffix '03' as decoded elsewhere in the same GM document.

Page 111, TR section, K 15/25 Series Light Duty Pickup Models (Automatic Transmission) maximum trailer ratings, model K15703, column 4.3L V6 GAS, axle 3.42

Conventional
4,700lb
GCWR
Not cited

2003 · OEM chart

GMC Sierra 1500

4.3L V6 · 4WD · Regular Cab · Not specified in chart · 3.42 axle

Equipment: GM model code K15903; Automatic transmission

Chart engine column: 4.3L V6 GAS (AUTOMATIC TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Chart note: C/K15 models are limited to 5,000-lb. trailer rating unless equipped with Z85 Increased Capacity or ZX3 Manual Select Damping (or Z71 Off-Road) Suspension Package. Cab type derived from GM model-code suffix '03' as decoded elsewhere in the same GM document.

Page 111, TR section, K 15/25 Series Light Duty Pickup Models (Automatic Transmission) maximum trailer ratings, model K15903, column 4.3L V6 GAS, axle 3.42

Conventional
4,600lb
GCWR
Not cited

2003 · OEM chart

GMC Sierra 1500

4.3L V6 · 2WD · Regular Cab · Not specified in chart · 3.08 axle

Equipment: GM model code C15703; Automatic transmission

Chart engine column: 4.3L V6 GAS (AUTOMATIC TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Chart note: C/K15 models are limited to 5,000-lb. trailer rating unless equipped with Z85 Increased Capacity or ZX3 Manual Select Damping (or Z71 Off-Road) Suspension Package. Cab type derived from GM model-code suffix '03' as decoded elsewhere in the same GM document.

Page 110, TR section, C 15/25 Series Light Duty Pickup Models (Automatic Transmission) maximum trailer ratings, model C15703, column 4.3L V6 GAS, axle 3.08

Conventional
4,500lb
GCWR
Not cited

2003 · OEM chart

GMC Sierra 1500

4.3L V6 · 2WD · Regular Cab · Not specified in chart · 3.08 axle

Equipment: GM model code C15903; Automatic transmission

Chart engine column: 4.3L V6 GAS (AUTOMATIC TRANS. RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Chart note: C/K15 models are limited to 5,000-lb. trailer rating unless equipped with Z85 Increased Capacity or ZX3 Manual Select Damping (or Z71 Off-Road) Suspension Package. Cab type derived from GM model-code suffix '03' as decoded elsewhere in the same GM document.

Page 110, TR section, C 15/25 Series Light Duty Pickup Models (Automatic Transmission) maximum trailer ratings, model C15903, column 4.3L V6 GAS, axle 3.08

Conventional
4,400lb
GCWR
Not cited

2003 · OEM chart

GMC Sierra 1500

4.3L V6 · 4WD · Regular Cab · Not specified in chart · 3.73 axle

Equipment: GM model code K15703; Manual transmission

Chart engine column: 4.3L V6 GAS (MANUAL TRANSMISSION RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Chart note: C/K15 models are limited to 5,000-lb. trailer rating unless equipped with Z85 Increased Capacity or ZX3 Manual Select Damping (or Z71 Off-Road) Suspension Package. Cab type derived from GM model-code suffix '03' as decoded elsewhere in the same GM document.

Page 109, TR section, C/K 15/25 Series Light Duty Pickup Models (Manual Transmission) maximum trailer ratings, model K15703, column 4.3L V6 GAS, axle 3.73

Conventional
4,200lb
GCWR
Not cited

2003 · OEM chart

GMC Sierra 1500

4.3L V6 · 4WD · Regular Cab · Not specified in chart · 3.73 axle

Equipment: GM model code K15903; Manual transmission

Chart engine column: 4.3L V6 GAS (MANUAL TRANSMISSION RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Chart note: C/K15 models are limited to 5,000-lb. trailer rating unless equipped with Z85 Increased Capacity or ZX3 Manual Select Damping (or Z71 Off-Road) Suspension Package. Cab type derived from GM model-code suffix '03' as decoded elsewhere in the same GM document.

Page 109, TR section, C/K 15/25 Series Light Duty Pickup Models (Manual Transmission) maximum trailer ratings, model K15903, column 4.3L V6 GAS, axle 3.73

Conventional
4,100lb
GCWR
Not cited

2003 · OEM chart

GMC Sierra 1500

4.3L V6 · 2WD · Regular Cab · Not specified in chart · 3.42 axle

Equipment: GM model code C15703; Manual transmission

Chart engine column: 4.3L V6 GAS (MANUAL TRANSMISSION RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Chart note: C/K15 models are limited to 5,000-lb. trailer rating unless equipped with Z85 Increased Capacity or ZX3 Manual Select Damping (or Z71 Off-Road) Suspension Package. Cab type derived from GM model-code suffix '03' as decoded elsewhere in the same GM document.

Page 109, TR section, C/K 15/25 Series Light Duty Pickup Models (Manual Transmission) maximum trailer ratings, model C15703, column 4.3L V6 GAS, axle 3.42

Conventional
4,000lb
GCWR
Not cited

2003 · OEM chart

GMC Sierra 1500

4.3L V6 · 2WD · Regular Cab · Not specified in chart · 3.42 axle

Equipment: GM model code C15903; Manual transmission

Chart engine column: 4.3L V6 GAS (MANUAL TRANSMISSION RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Chart note: C/K15 models are limited to 5,000-lb. trailer rating unless equipped with Z85 Increased Capacity or ZX3 Manual Select Damping (or Z71 Off-Road) Suspension Package. Cab type derived from GM model-code suffix '03' as decoded elsewhere in the same GM document.

Page 109, TR section, C/K 15/25 Series Light Duty Pickup Models (Manual Transmission) maximum trailer ratings, model C15903, column 4.3L V6 GAS, axle 3.42

Conventional
3,900lb
GCWR
Not cited

2003 · OEM chart

GMC Sierra 1500

4.3L V6 · 2WD · Extended Cab · Not specified in chart · 3.42 axle

Equipment: GM model code C15753; Manual transmission

Chart engine column: 4.3L V6 GAS (MANUAL TRANSMISSION RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Chart note: C/K15 models are limited to 5,000-lb. trailer rating unless equipped with Z85 Increased Capacity or ZX3 Manual Select Damping (or Z71 Off-Road) Suspension Package. Cab type derived from GM model-code suffix '53' as decoded elsewhere in the same GM document.

Page 109, TR section, C/K 15/25 Series Light Duty Pickup Models (Manual Transmission) maximum trailer ratings, model C15753, column 4.3L V6 GAS, axle 3.42

Conventional
3,700lb
GCWR
Not cited

2003 · OEM chart

GMC Sierra 1500

4.3L V6 · 4WD · Regular Cab · Not specified in chart · 3.42 axle

Equipment: GM model code K15703; Manual transmission

Chart engine column: 4.3L V6 GAS (MANUAL TRANSMISSION RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Chart note: C/K15 models are limited to 5,000-lb. trailer rating unless equipped with Z85 Increased Capacity or ZX3 Manual Select Damping (or Z71 Off-Road) Suspension Package. Cab type derived from GM model-code suffix '03' as decoded elsewhere in the same GM document.

Page 109, TR section, C/K 15/25 Series Light Duty Pickup Models (Manual Transmission) maximum trailer ratings, model K15703, column 4.3L V6 GAS, axle 3.42

Conventional
3,700lb
GCWR
Not cited

2003 · OEM chart

GMC Sierra 1500

4.3L V6 · 4WD · Regular Cab · Not specified in chart · 3.42 axle

Equipment: GM model code K15903; Manual transmission

Chart engine column: 4.3L V6 GAS (MANUAL TRANSMISSION RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Chart note: C/K15 models are limited to 5,000-lb. trailer rating unless equipped with Z85 Increased Capacity or ZX3 Manual Select Damping (or Z71 Off-Road) Suspension Package. Cab type derived from GM model-code suffix '03' as decoded elsewhere in the same GM document.

Page 109, TR section, C/K 15/25 Series Light Duty Pickup Models (Manual Transmission) maximum trailer ratings, model K15903, column 4.3L V6 GAS, axle 3.42

Conventional
3,600lb
GCWR
Not cited

2003 · OEM chart

GMC Sierra 1500

4.3L V6 · 2WD · Regular Cab · Not specified in chart · 3.08 axle

Equipment: GM model code C15703; Manual transmission

Chart engine column: 4.3L V6 GAS (MANUAL TRANSMISSION RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Chart note: C/K15 models are limited to 5,000-lb. trailer rating unless equipped with Z85 Increased Capacity or ZX3 Manual Select Damping (or Z71 Off-Road) Suspension Package. Cab type derived from GM model-code suffix '03' as decoded elsewhere in the same GM document.

Page 109, TR section, C/K 15/25 Series Light Duty Pickup Models (Manual Transmission) maximum trailer ratings, model C15703, column 4.3L V6 GAS, axle 3.08

Conventional
3,500lb
GCWR
Not cited

2003 · OEM chart

GMC Sierra 1500

4.3L V6 · 2WD · Regular Cab · Not specified in chart · 3.08 axle

Equipment: GM model code C15903; Manual transmission

Chart engine column: 4.3L V6 GAS (MANUAL TRANSMISSION RATINGS). Chart note: Trailer ratings are calculated assuming a standard equipped vehicle plus driver. Optional equipment, passengers or cargo will reduce trailering capacity. Chart note: C/K15 models are limited to 5,000-lb. trailer rating unless equipped with Z85 Increased Capacity or ZX3 Manual Select Damping (or Z71 Off-Road) Suspension Package. Cab type derived from GM model-code suffix '03' as decoded elsewhere in the same GM document.

Page 109, TR section, C/K 15/25 Series Light Duty Pickup Models (Manual Transmission) maximum trailer ratings, model C15903, column 4.3L V6 GAS, axle 3.08

Conventional
3,400lb
GCWR
Not cited