Specifications Comparison: 2004 GMC Sierra 2500 vs 2021 GMC Sierra 2500

Towing Capacity

Trim	Engine	Drive train	Towing Capacity (lbs)
2500 Extended Cab	V8	RWD	10,300 lbs.
2500 Extended Cab SLE	V8	4WD	10,300 lbs.
2500 Extended Cab SLT	V8	4WD	10,300 lbs.
2500 Regular Cab	V8	RWD	10,800 lbs.
2500 Regular Cab SLE	V8	RWD	10,800 lbs.
Crew Cab 2500 SLE	V8	RWD	8,300 lbs.
Crew Cab 2500 SLE	V8	4WD	8,000 lbs.
Crew Cab 2500 SLT	V8	RWD	8,300 lbs.
Crew Cab 2500 SLT	V8	4WD	8,000 lbs.
HD 2500 Crew Cab	V8	RWD	10,200 lbs.
HD 2500 Crew Cab	V8	4WD	9,900 lbs.
HD 2500 Crew Cab SLE	V8	RWD	10,200 lbs.
HD 2500 Crew Cab SLE	V8	4WD	9,900 lbs.
HD 2500 Crew Cab SLT	V8	RWD	10,200 lbs.
HD 2500 Crew Cab SLT	V8	4WD	9,900 lbs.
HD 2500 Extended Cab	V8	RWD	10,300 lbs.
HD 2500 Extended Cab	V8	4WD	10,100 lbs.
HD 2500 Extended Cab SLE	V8	RWD	10,300 lbs.
HD 2500 Extended Cab SLE	V8	4WD	10,100 lbs.
HD 2500 Extended Cab SLT	V8	RWD	10,300 lbs.
HD 2500 Extended Cab SLT	V8	4WD	10,100 lbs.
HD 2500 Regular Cab	V8	RWD	10,600 lbs.
HD 2500 Regular Cab	V8	4WD	10,300 lbs.
HD 2500 Regular Cab SLE	V8	RWD	10,600 lbs.
HD 2500 Regular Cab SLE	V8	4WD	10,300 lbs.

Trim	Engine	Drive train	Towing Capacity (lbs)
HD Crew Cab	6.6L V8	RWD	14,500 lbs.
HD Crew Cab	6.6L V8	4WD	14,500 lbs.
HD Crew Cab AT4	6.6L V8	4WD	14,500 lbs.
HD Crew Cab Denali	6.6L V8	4WD	14,500 lbs.
HD Crew Cab SLE	6.6L V8	RWD	14,500 lbs.
HD Crew Cab SLE	6.6L V8	4WD	14,500 lbs.
HD Crew Cab SLT	6.6L V8	RWD	14,500 lbs.
HD Crew Cab SLT	6.6L V8	4WD	14,500 lbs.
HD Extended Cab	6.6L V8	RWD	14,500 lbs.
HD Extended Cab	6.6L V8	4WD	14,500 lbs.
HD Extended Cab SLE	6.6L V8	RWD	14,500 lbs.
HD Extended Cab SLE	6.6L V8	4WD	14,500 lbs.
HD Extended Cab SLT	6.6L V8	RWD	14,500 lbs.
HD Extended Cab SLT	6.6L V8	4WD	14,500 lbs.
HD Regular Cab	6.6L V8	RWD	14,500 lbs.
HD Regular Cab	6.6L V8	4WD	14,500 lbs.
HD Regular Cab SLE	6.6L V8	RWD	14,500 lbs.
HD Regular Cab SLE	6.6L V8	4WD	14,500 lbs.