Index · GMC · Sierra 1500
2003 GMC Sierra 1500
The highest conventional-hitch rating for the 2003 GMC Sierra 1500 is 10,200 lb, the top of 80 rows transcribed from General Motors’ 2003 GM Light Duty Truck Special Applications (Trailering Information section). That row is printed for the 6.0L V8, Crew Cab, 2WD, 4.10 axle, GM model code C15743, Automatic transmission. Most configurations are rated lower: 79 of the 80 transcribed conventional-hitch chart rows for 2003 are below 10,200 lb. The other cited maximum for the 2003 GMC Sierra 1500 is 10,200 lb on a fifth-wheel hitch. Across 125 manufacturer chart rows for 2003, ratings run conventional 3,400 lb to 10,200 lb; fifth-wheel 5,900 lb to 10,200 lb; the engine, cab, axle ratio and package on your truck decide its number.
conventional6.0L V8, Crew Cab, 2WD, 4.10 axle, GM model code C15743; Automatic transmission.10,200 lb
fifth-wheel6.0L V8, Crew Cab, 2WD, 4.10 axle, GM model code C15743; Automatic or manual transmission.10,200 lb
The build table for 2003 is not transcribed. This page will not multiply trims, cabs, and engines into trucks the order guide did not list.
| Hitch | Cited maximum | Configuration | Source grade |
|---|---|---|---|
| Conventional | 10,200 lb | 6.0L V8, Crew Cab, 2WD, 4.10 axle, GM model code C15743; Automatic transmission. | OEM chart |
| Fifth-wheel | 10,200 lb | 6.0L V8, Crew Cab, 2WD, 4.10 axle, GM model code C15743; Automatic or manual transmission. | OEM chart |
Highest rows among 125 transcribed chart configurations. Most trucks of this model year are rated lower; find your exact configuration in the table below.
Source: General Motors, 2003 GM Light Duty Truck Special Applications (Trailering Information section), Trailering Information: 2003 Maximum Trailer Ratings and 5th Wheel or Gooseneck Trailer Ratings tables (PDF pages 109-126); 2003 Maximum Trailer Ratings, S/T (GMT325) Pickup Models, PDF page 104 (printed TR-5). Ratings are by GM model code; each Chevrolet Silverado/GMC Sierra table applies to both brands.
Spec sheet
5 of 25 fields cited; 1 estimate. Field index
Cited fields may cover selected trims or only part of a measurement. Read the configuration and source beside each value; a cited field does not mean every version is researched.
Towing
- Conventional maximum
- 10,200 lb. 6.0L V8, Crew Cab, 2WD, 4.10 axle, GM model code C15743; Automatic transmission.General Motors source
- Gooseneck maximum
- Not transcribed for this model year.
- Fifth-wheel maximum
- 10,200 lb. 6.0L V8, Crew Cab, 2WD, 4.10 axle, GM model code C15743; Automatic or manual transmission.General Motors source
- Tongue or pin load
- 1,020 lb tongue at the 10,200 lb conventional maximum. 1,530 lb pin at the 10,200 lb fifth-wheel maximum. Illustration at 10 percent conventional and 15 percent in-bed, not a measured load or recommendation. Follow the trailer and vehicle instructions; actual load may be higher.Estimate
- Weight distribution
- Not transcribed for this model year.
- Trailer frontal area
- Not transcribed for this model year.
Weights
- Payload
- Not transcribed for this model year.
- GCWR
- Not transcribed for this model year.
- GVWR
- Not transcribed for this model year.
- Front GAWR
- Not transcribed for this model year.
- Rear GAWR
- Not transcribed for this model year.
- Curb weight
- Not transcribed for this model year.
Body
- Wheelbase
- Not transcribed for this model year.
- Bed length
- Not transcribed for this model year.
- Bed width and depth
- Not transcribed for this model year.
- Cab-to-axle
- Not transcribed for this model year.
- Overall length, width, height
- Not transcribed for this model year.
- Ground clearance and angles
- Not transcribed for this model year.
- Fifth-wheel clearance
- Not transcribed for this model year.
Power
- Engine, horsepower, torque
- Not transcribed for this model year.
- Transmission
- Not transcribed for this model year.
- Fuel type and tank
- Not transcribed for this model year.
- Drivetrain
- 2WD, 4WDGeneral Motors source
- Axle ratio
- 4.10, 3.73, 3.42, 3.08General Motors source
- Tow package
- GM model code C15743; Automatic transmission; GM model code C15743; Automatic or manual transmission; GM model code K15753 & Y91; Automatic transmission; GM model code C15743 & NYS; Automatic transmission; GM model code K15743; Automatic transmission; GM model code C15743 & NYS; Automatic or manual transmission; GM model code K15743; Automatic or manual transmission; GM model code K15743 & NYS; Automatic transmission; GM model code K15743 & NYS; Automatic or manual transmission; GM model code K15753 & Y91; Automatic or manual transmission; GM model code K15703; Automatic transmission; GM model code K15903; Automatic transmission; GM model code K15753; Automatic transmission; GM model code K15953; Automatic transmission; GM model code C15753 & NYS; Automatic transmission; GM model code C15703; Automatic transmission; GM model code K15753 & NYS; Automatic transmission; GM model code C15903; Automatic transmission; GM model code C15753; Automatic transmission; GM model code C15953; Automatic transmission; GM model code K15703; Manual transmission; GM model code K15903; Manual transmission; GM model code K15753; Manual transmission; GM model code K15953; Manual transmission; GM model code C15703; Manual transmission; GM model code C15903; Manual transmission; GM model code C15753; Manual transmission; GM model code C15953; Manual transmissionGeneral Motors source
Bed, tongue weight, and wheelbase
The trailer rating is one limit. The bed has to fit the load, the tongue or pin has to fit in payload, and the wheelbase is the column the chart uses.
- An illustrative 10 percent of the 10,200 lb conventional maximum is 1,020 lb of tongue weight. This is not a measured load or recommended percentage; actual load may be higher.
- An illustrative 15 percent of the 10,200 lb fifth-wheel maximum is 1,530 lb of pin weight. This is not a measured load or recommended percentage; actual load may be higher.
Bed capacity · Tongue and pin weight · Wheelbase · GCWR, GVWR, and GAWR. Wheelbase is not transcribed for this year. GCWR is not transcribed for this year.
Estimate payload margin and bed volume · How these limits work together
Change from 2000
- Conventional: 9,500 lb in 2000, 10,200 lb in 2003 (+700 lb).
- Fifth-wheel: 9,500 lb in 2000, 10,200 lb in 2003 (+700 lb).
Generation
GMT800
2003 is year 5 of this generation (1999–2006). First Sierra 1500 generation, parallel to the Silverado but cited on its own when a GMC chart is on file.
2003 towing by engine
Lowest to highest printed rating for each engine across 125 transcribed chart rows. A missing hitch means the chart did not print one for that engine, not that it is zero.
| Engine | Conventional | Fifth-wheel | Chart rows |
|---|---|---|---|
| 6.0L V8 | 7,600–10,200 lb | 7,600–10,200 lb | 18 |
| 5.3L V8 | 6,900–9,100 lb | 6,800–8,900 lb | 40 |
| 4.8L V8 | 3,900–8,100 lb | 5,900–8,000 lb | 48 |
| 4.3L V6 | 3,400–5,200 lb | — | 19 |
Highest-rated configurations
| Trailer | Engine | Cab / bed | Drive | Axle / package | GCWR | Evidence |
|---|---|---|---|---|---|---|
| 10,200 lb Conventional | 6.0L V8 | Crew Cab | 2WD | 4.10 · GM model code C15743; Automatic transmissionnote 1 | — | Page 110, TR section, C 15/25 Series Light Duty Pickup Models (Automatic Transmission) maximum trailer ratings, model C15743, column 6.0L V8 GAS, axle 4.10 |
| 10,200 lb Fifth-wheel | 6.0L V8 | Crew Cab | 2WD | 4.10 · GM model code C15743; Automatic or manual transmissionnote 2 | — | Page 123, TR section, C 15/25 Series Light Duty Pickup Models 5th Wheel or Gooseneck Trailer Ratings, model C15743, column 6.0L V8 GAS, axle 4.10 |
| 10,000 lb Conventional | 6.0L V8 | Extended Cab | 4WD | 4.10 · GM model code K15753 & Y91; Automatic transmissionnote 3 | — | Page 111, TR section, K 15/25 Series Light Duty Pickup Models (Automatic Transmission) maximum trailer ratings, model K15753 & Y91, column 6.0L V8 GAS, axle 4.10 |
| 9,900 lb Conventional | 6.0L V8 | Crew Cab | 2WD | 4.10 · GM model code C15743 & NYS; Automatic transmissionnote 1 | — | Page 110, TR section, C 15/25 Series Light Duty Pickup Models (Automatic Transmission) maximum trailer ratings, model C15743 & NYS, column 6.0L V8 GAS, axle 4.10 |
| 9,900 lb Conventional | 6.0L V8 | Crew Cab | 4WD | 4.10 · GM model code K15743; Automatic transmissionnote 1 | — | Page 111, TR section, K 15/25 Series Light Duty Pickup Models (Automatic Transmission) maximum trailer ratings, model K15743, column 6.0L V8 GAS, axle 4.10 |
| 9,900 lb Fifth-wheel | 6.0L V8 | Crew Cab | 2WD | 4.10 · GM model code C15743 & NYS; Automatic or manual transmissionnote 2 | — | Page 123, TR section, C 15/25 Series Light Duty Pickup Models 5th Wheel or Gooseneck Trailer Ratings, model C15743 & NYS, column 6.0L V8 GAS, axle 4.10 |
| 9,900 lb Fifth-wheel | 6.0L V8 | Crew Cab | 4WD | 4.10 · GM model code K15743; Automatic or manual transmissionnote 2 | — | Page 124, TR section, K 15/25 Series Light Duty Pickup Models 5th Wheel or Gooseneck Trailer Ratings, model K15743, column 6.0L V8 GAS, axle 4.10 |
| 9,600 lb Conventional | 6.0L V8 | Crew Cab | 4WD | 4.10 · GM model code K15743 & NYS; Automatic transmissionnote 1 | — | Page 111, TR section, K 15/25 Series Light Duty Pickup Models (Automatic Transmission) maximum trailer ratings, model K15743 & NYS, column 6.0L V8 GAS, axle 4.10 |
| 9,600 lb Fifth-wheel | 6.0L V8 | Crew Cab | 4WD | 4.10 · GM model code K15743 & NYS; Automatic or manual transmissionnote 2 | — | Page 124, TR section, K 15/25 Series Light Duty Pickup Models 5th Wheel or Gooseneck Trailer Ratings, model K15743 & NYS, column 6.0L V8 GAS, axle 4.10 |
| 9,200 lb Fifth-wheel | 6.0L V8 | Extended Cab | 4WD | 4.10 · GM model code K15753 & Y91; Automatic or manual transmissionnote 4 | — | Page 124, TR section, K 15/25 Series Light Duty Pickup Models 5th Wheel or Gooseneck Trailer Ratings, model K15753 & Y91, column 6.0L V8 GAS, axle 4.10 |
| 9,100 lb Conventional | 5.3L V8 | Regular Cab | 4WD | 4.10 · GM model code K15703; Automatic transmissionnote 5 | — | Page 111, TR section, K 15/25 Series Light Duty Pickup Models (Automatic Transmission) maximum trailer ratings, model K15703, column 5.3L V8 GAS, axle 4.10 |
| 9,000 lb Conventional | 5.3L V8 | Regular Cab | 4WD | 4.10 · GM model code K15903; Automatic transmissionnote 5 | — | Page 111, TR section, K 15/25 Series Light Duty Pickup Models (Automatic Transmission) maximum trailer ratings, model K15903, column 5.3L V8 GAS, axle 4.10 |
- Chart engine column: 6.0L V8 GAS (RATINGS 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 '43' as decoded elsewhere in the same GM document.
- Chart engine column: 6.0L V8 GAS (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. 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 '43' as decoded elsewhere in the same GM document.
- Chart engine column: 6.0L V8 GAS (RATINGS 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.
- Chart engine column: 6.0L V8 GAS (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. 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.
- Chart engine column: 5.3L V8 GAS (RATINGS 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.
Chart source: General Motors, 2003 GM Light Duty Truck Special Applications (Trailering Information section). The evidence column gives each row’s page and table.
Find your exact configuration (125 rows) →Download 2003 rows as CSV ↓
What changes the number
- Engine and transmission
- Cab, bed, and wheelbase
- Two-wheel drive, four-wheel drive, or all-wheel drive
- Axle ratio and tow package
- Conventional hitch versus fifth-wheel versus gooseneck
- People, options, and cargo, which spend payload the chart assumed was empty
Questions
- How much can a 2003 GMC Sierra 1500 tow?
- The highest conventional-hitch rating for the 2003 GMC Sierra 1500 is 10,200 lb, the top of 80 rows transcribed from General Motors’ 2003 GM Light Duty Truck Special Applications (Trailering Information section). That row is printed for the 6.0L V8, Crew Cab, 2WD, 4.10 axle, GM model code C15743, Automatic transmission. Most configurations are rated lower: 79 of the 80 transcribed conventional-hitch chart rows for 2003 are below 10,200 lb. The other cited maximum for the 2003 GMC Sierra 1500 is 10,200 lb on a fifth-wheel hitch.
- Did Sierra 1500 towing change for 2003?
- Compare the cited 2003 figures on this page with the 2000 record. They are stored separately.
- Which configuration hits the maximum?
- The 10,200 lb conventional maximum is printed for the 6.0L V8, Crew Cab, 2WD, 4.10 axle, GM model code C15743, Automatic transmission.
- What tongue weight should I plan for a 2003 Sierra 1500?
- At the cited 10,200 lb conventional maximum, an illustrative 10% assumption produces 1,020 lb of tongue weight. This is not a recommended percentage or a measurement; follow your trailer and vehicle instructions and measure the actual load. At the cited 10,200 lb fifth-wheel maximum, an illustrative 15% assumption produces 1,530 lb of pin weight. This is not a recommended percentage or a measurement; follow your trailer and vehicle instructions and measure the actual load. That load counts against payload and the rear axle rating.
Compare with
2001 · 2002 · 2004 · 2005 · All Sierra 1500 years