Specifications Comparison: 2005 GMC Sierra 3500 vs 2018 GMC Sierra 3500

Towing Capacity

Trim	Engine	Drive train	Towing Capacity (lbs)
3500 Crew Cab	V8	RWD	9,400 lbs.
3500 Crew Cab	V8	4WD	9,400 lbs.
3500 Crew Cab SLE	V8	RWD	9,400 lbs.
3500 Crew Cab SLE	V8	4WD	9,400 lbs.
3500 Crew Cab SLT	V8	RWD	9,400 lbs.
3500 Crew Cab SLT	V8	4WD	9,400 lbs.
3500 Extended Cab	V8	RWD	9,700 lbs.
3500 Extended Cab	V8	4WD	9,600 lbs.
3500 Extended Cab SLE	V8	RWD	9,700 lbs.
3500 Extended Cab SLE	V8	4WD	9,600 lbs.
3500 Extended Cab SLT	V8	RWD	9,700 lbs.
3500 Extended Cab SLT	V8	4WD	9,600 lbs.
3500 Regular Cab	V8	4WD	10,000 lbs.
3500 Regular Cab SLE	V8	4WD	10,000 lbs.

Trim	Engine	Drive train	Towing Capacity (lbs)
HD 3500 Crew Cab	6.0L V8	RWD	13,000 lbs.
HD 3500 Crew Cab	6.0L V8	4WD	13,000 lbs.
HD 3500 Crew Cab Denali	6.0L V8	RWD	13,000 lbs.
HD 3500 Crew Cab Denali	6.0L V8	4WD	13,000 lbs.
HD 3500 Crew Cab SLE	6.0L V8	RWD	13,000 lbs.
HD 3500 Crew Cab SLE	6.0L V8	4WD	13,000 lbs.
HD 3500 Crew Cab SLT	6.0L V8	RWD	13,000 lbs.
HD 3500 Crew Cab SLT	6.0L V8	4WD	13,000 lbs.
HD 3500 Extended Cab	6.0L V8	RWD	14,200 lbs.
HD 3500 Extended Cab	6.0L V8	4WD	13,900 lbs.
HD 3500 Extended Cab SLE	6.0L V8	RWD	14,200 lbs.
HD 3500 Extended Cab SLE	6.0L V8	4WD	13,900 lbs.
HD 3500 Extended Cab SLT	6.0L V8	RWD	14,200 lbs.
HD 3500 Regular Cab	6.0L V8	RWD	14,500 lbs.
HD 3500 Regular Cab	6.0L V8	4WD	14,300 lbs.
HD 3500 Regular Cab SLE	6.0L V8	RWD	14,500 lbs.
HD 3500 Regular Cab SLE	6.0L V8	4WD	14,300 lbs.