Specifications Comparison: 2003 GMC Sierra 3500 vs 2006 GMC Sierra 3500

Towing Capacity

Trim	Engine	Drive train	Towing Capacity (lbs)
3500 Crew Cab	V8	RWD	9,500 lbs.
3500 Crew Cab	V8	4WD	9,200 lbs.
3500 Crew Cab SLE	V8	RWD	9,500 lbs.
3500 Crew Cab SLE	V8	4WD	9,200 lbs.
3500 Crew Cab SLT	V8	RWD	9,500 lbs.
3500 Crew Cab SLT	V8	4WD	9,200 lbs.
3500 Extended Cab	V8	RWD	9,800 lbs.
3500 Extended Cab	V8	4WD	9,500 lbs.
3500 Extended Cab SLE	V8	RWD	9,800 lbs.
3500 Extended Cab SLE	V8	4WD	9,500 lbs.
3500 Extended Cab SLT	V8	RWD	9,800 lbs.
3500 Extended Cab SLT	V8	4WD	9,500 lbs.
3500 Regular Cab	V8	4WD	9,900 lbs.
3500 Regular Cab SLE	V8	4WD	9,900 lbs.

Trim	Engine	Drive train	Towing Capacity (lbs)
3500 Crew Cab SL	V8	RWD	9,500 lbs.
3500 Crew Cab SL	V8	4WD	9,400 lbs.
3500 Crew Cab SLE	V8	RWD	9,500 lbs.
3500 Crew Cab SLE	V8	4WD	9,400 lbs.
3500 Crew Cab SLT	V8	RWD	9,500 lbs.
3500 Crew Cab SLT	V8	4WD	9,400 lbs.
3500 Extended Cab SL	V8	RWD	9,700 lbs.
3500 Extended Cab SL	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 SL	V8	RWD	10,300 lbs.
3500 Regular Cab SL	V8	4WD	10,000 lbs.
3500 Regular Cab SLE	V8	RWD	10,300 lbs.
3500 Regular Cab SLE	V8	4WD	10,000 lbs.