Specifications Comparison: 2008 GMC Sierra 1500 vs 2006 GMC Sierra 1500

Towing Capacity

Trim	Engine	Drive train	Towing Capacity (lbs)
1500 Extended Cab SL	4.8L V8	RWD	4,700 lbs.
1500 Extended Cab SL	4.8L V8	4WD	5,500 lbs.
1500 Extended Cab SLE	4.8L V8	RWD	4,700 lbs.
1500 Regular Cab SLE	4.8L V6	4WD	5,000 lbs.
1500 Crew Cab SL	4.8L V8	RWD	4,600 lbs.
1500 Crew Cab SL	4.8L V8	4WD	5,000 lbs.
1500 Crew Cab SLE	4.8L V8	RWD	4,600 lbs.
1500 Crew Cab SLE	4.8L V8	4WD	5,000 lbs.
1500 Crew Cab SLT	5.3L V8	RWD	6,600 lbs.
1500 Crew Cab SLT	5.3L V8	4WD	7,500 lbs.
1500 Extended Cab SLE	4.3L V6	RWD	4,400 lbs.
1500 Extended Cab SLT	5.3L V8	RWD	6,800 lbs.
1500 Extended Cab SLT	5.3L V8	4WD	7,500 lbs.
1500 Regular Cab SLE	4.8L V6	RWD	4,800 lbs.
Crew Cab Denali	6.2L V8	RWD	8,600 lbs.
Crew Cab Denali	6.2L V8	AWD	8,400 lbs.

Trim	Engine	Drive train	Towing Capacity (lbs)
1500 Extended Cab SL	V6	RWD	4,600 lbs.
1500 Extended Cab SL	V8	4WD	6,700 lbs.
1500 Extended Cab SLE	V8	RWD	6,200 lbs.
1500 Extended Cab SLE	V8	4WD	7,700 lbs.
1500 Regular Cab SL	V6	RWD	4,000 lbs.
1500 Regular Cab SL	V6	4WD	5,100 lbs.
1500 Regular Cab SLE	V8	RWD	6,400 lbs.
1500 Regular Cab SLE	V8	4WD	7,100 lbs.
1500 Crew Cab SL	V8	RWD	5,700 lbs.
1500 Crew Cab SL	V8	4WD	6,400 lbs.
1500 Crew Cab SLE	V8	RWD	6,700 lbs.
1500 Crew Cab SLE	V8	4WD	7,400 lbs.
1500 Crew Cab SLT	V8	RWD	6,700 lbs.
1500 Crew Cab SLT	V8	4WD	7,400 lbs.
1500 Extended Cab SLT	V8	RWD	7,000 lbs.
1500 Extended Cab SLT	V8	4WD	7,700 lbs.
1500 Extended Cab SLE	V8	RWD	6,700 lbs.
1500 Extended Cab SLE	V8	4WD	7,400 lbs.
HD 1500 Crew Cab SLE	V8	RWD	8,200 lbs.
HD 1500 Crew Cab SLE	V8	4WD	7,900 lbs.
HD 1500 Crew Cab SLT	V8	RWD	8,200 lbs.
HD 1500 Crew Cab SLT	V8	4WD	7,900 lbs.
Crew Cab Denali	V8	AWD	8,100 lbs.