Specifications Comparison: 2005 GMC Sierra 3500 vs 2007 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)
Classic 3500 Crew Cab SL	6.0L V8	RWD	9,500 lbs.
Classic 3500 Crew Cab SL	6.0L V8	4WD	9,400 lbs.
Classic 3500 Crew Cab SLE	6.0L V8	RWD	9,500 lbs.
Classic 3500 Crew Cab SLE	6.0L V8	4WD	9,400 lbs.
Classic 3500 Crew Cab SLT	6.0L V8	RWD	9,500 lbs.
Classic 3500 Crew Cab SLT	6.0L V8	4WD	9,400 lbs.
Classic 3500 Extended Cab SL	6.0L V8	RWD	9,700 lbs.
Classic 3500 Extended Cab SL	6.0L V8	4WD	9,600 lbs.
Classic 3500 Extended Cab SLE	6.0L V8	RWD	9,700 lbs.
Classic 3500 Extended Cab SLE	6.0L V8	4WD	9,600 lbs.
Classic 3500 Extended Cab SLT	6.0L V8	RWD	9,700 lbs.
Classic 3500 Extended Cab SLT	6.0L V8	4WD	9,600 lbs.
Classic 3500 Regular Cab SL	6.0L V8	RWD	10,300 lbs.
Classic 3500 Regular Cab SL	6.0L V8	4WD	10,000 lbs.
Classic 3500 Regular Cab SLE	6.0L V8	RWD	10,300 lbs.
Classic 3500 Regular Cab SLE	6.0L V8	4WD	10,000 lbs.
HD 3500 Crew Cab SLE	6.0L V8	RWD	9,600 lbs.
HD 3500 Crew Cab SLE	6.0L V8	4WD	9,300 lbs.
HD 3500 Crew Cab SLT	6.0L V8	RWD	9,600 lbs.
HD 3500 Crew Cab SLT	6.0L V8	4WD	9,300 lbs.
HD 3500 Extended Cab SLE	6.0L V8	RWD	9,700 lbs.
HD 3500 Extended Cab SLE	6.0L V8	4WD	9,500 lbs.
HD 3500 Extended Cab SLT	6.0L V8	RWD	9,700 lbs.
HD 3500 Extended Cab SLT	6.0L V8	4WD	9,500 lbs.
HD 3500 Regular Cab SLE	6.0L V8	RWD	10,100 lbs.
HD 3500 Regular Cab SLE	6.0L V8	4WD	9,900 lbs.