Towing capacity varies significantly by year, engine, cab/bed configuration, and axle ratio. This guide gives you a reference chart and explains how to find your truck’s specific rating.
How to Find Your Exact Tow Rating
- Check the towing guide in your glove box — Every GM truck came with a tow guide booklet that lists your specific truck’s rating based on VIN options
- Door jamb sticker — GVWR, GAWR, and tire info are there; GCWR determines your total towing capacity
- Online VIN decoder — GM’s vehicle history tool or third-party VIN decoders can pull your truck’s original order options
- Your engine + axle ratio combo matters most — A 5.3L with 3.73 gears rates differently than the same truck with 4.10 gears
Silverado/Sierra 1500 Approximate Tow Ratings by Generation
| Generation | Engine | Max Tow Rating |
|---|---|---|
| GMT400 (1988–1998) | 5.7L V8 TBI | ~7,000–8,500 lbs |
| GMT800 (1999–2006) | 5.3L V8 | ~8,000–9,700 lbs |
| GMT800 (1999–2006) | 6.0L V8 | ~10,000–11,000 lbs |
| GMT900 (2007–2013) | 5.3L V8 | ~9,500–10,700 lbs |
| GMT900 (2007–2013) | 6.2L V8 | ~10,700–11,500 lbs |
| K2XX (2014–2018) | 5.3L V8 | ~9,600–11,500 lbs |
| K2XX (2014–2018) | 6.2L V8 | ~12,000 lbs |
| T1XX (2019+) | 5.3L V8 | ~11,200 lbs |
| T1XX (2019+) | 6.2L V8 | ~13,300 lbs |
| T1XX (2019+) | 3.0L Duramax | ~9,300 lbs |
Ratings are maximums with proper equipment packages; verify for your specific build.
Heavy Duty (2500 / 3500) Approximate Max Ratings
| Generation | Engine | Max Conventional | 5th Wheel/Gooseneck |
|---|---|---|---|
| GMT400 2500HD | 6.5L Diesel | ~12,000 lbs | ~15,000 lbs |
| GMT800 2500HD | 8.1L V8 | ~12,000 lbs | ~15,000 lbs |
| GMT900 2500HD | LMM Duramax | ~13,000–16,700 lbs | ~18,500 lbs |
| K2XX 2500HD | LML Duramax | ~14,500–18,100 lbs | ~21,700 lbs |
| K2XX 3500HD | LML Duramax | ~20,000+ lbs | ~23,200 lbs |
| T1XX 3500HD | L5P Duramax | ~23,300 lbs | ~36,000 lbs (gooseneck) |
Key Things That Affect Tow Capacity
- Max Trailer Weight ≠ Safe Towing Weight — Stay at or under 80% of max for daily/highway towing
- Tongue weight: Should be 10–15% of total trailer weight
- Payload rating: Subtract passengers and cargo from your payload — the rest is available for tongue weight
- Trailer brakes: Required for trailers over 6,000 lbs GVWR in most states
- Weight distribution hitch: Required for trailers exceeding 60% of tow vehicle weight
Always set up your hitch, mirrors, and brake controller before heading out.