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

Engine Horsepower & Torque

Trim	Eng.	Drive train	HP	Torque (ft-lbs)
1500 Extended Cab SL	4.8L V8	RWD	295	305
1500 Extended Cab SL	4.8L V8	4WD	295	305
1500 Extended Cab SLE	4.8L V8	RWD	295	305
1500 Regular Cab SLE	4.8L V6	4WD	195	260
1500 Crew Cab SL	4.8L V8	RWD	295	305
1500 Crew Cab SL	4.8L V8	4WD	295	305
1500 Crew Cab SLE	4.8L V8	RWD	295	305
1500 Crew Cab SLE	4.8L V8	4WD	295	305
1500 Crew Cab SLT	5.3L V8	RWD	315	338
1500 Crew Cab SLT	5.3L V8	4WD	315	338
1500 Extended Cab SLE	4.3L V6	RWD	195	260
1500 Extended Cab SLT	5.3L V8	RWD	315	338
1500 Extended Cab SLT	5.3L V8	4WD	315	338
1500 Regular Cab SLE	4.8L V6	RWD	195	260
Crew Cab Denali	6.2L V8	RWD	403	417
Crew Cab Denali	6.2L V8	AWD	403	417

Trim	Eng.	Drive train	HP	Torque (ft-lbs)
1500 Extended Cab SL	V6	RWD	195	260
1500 Extended Cab SL	V8	4WD	285	295
1500 Extended Cab SLE	V8	RWD	285	295
1500 Extended Cab SLE	V8	4WD	295	335
1500 Regular Cab SL	V6	RWD	195	260
1500 Regular Cab SL	V6	4WD	195	260
1500 Regular Cab SLE	V8	RWD	285	295
1500 Regular Cab SLE	V8	4WD	285	295
1500 Crew Cab SL	V8	RWD	285	295
1500 Crew Cab SL	V8	4WD	285	295
1500 Crew Cab SLE	V8	RWD	295	335
1500 Crew Cab SLE	V8	4WD	295	335
1500 Crew Cab SLT	V8	RWD	295	335
1500 Crew Cab SLT	V8	4WD	295	335
1500 Extended Cab SLT	V8	RWD	295	335
1500 Extended Cab SLT	V8	4WD	295	335
1500 Extended Cab SLE	V8	RWD	295	335
1500 Extended Cab SLE	V8	4WD	295	335
HD 1500 Crew Cab SLE	V8	RWD	300	360
HD 1500 Crew Cab SLE	V8	4WD	300	360
HD 1500 Crew Cab SLT	V8	RWD	300	360
HD 1500 Crew Cab SLT	V8	4WD	300	360
Crew Cab Denali	V8	AWD	345	380

Trim	Eng.	Drive train	HP Per Liter	HP Per Inch³
1500 Extended Cab SL	4.8L V8	RWD	61	1.01
1500 Extended Cab SL	4.8L V8	4WD	61	1.01
1500 Extended Cab SLE	4.8L V8	RWD	61	1.01
1500 Regular Cab SLE	4.8L V6	4WD	40	0.67
1500 Crew Cab SL	4.8L V8	RWD	61	1.01
1500 Crew Cab SL	4.8L V8	4WD	61	1.01
1500 Crew Cab SLE	4.8L V8	RWD	61	1.01
1500 Crew Cab SLE	4.8L V8	4WD	61	1.01
1500 Crew Cab SLT	5.3L V8	RWD	59	0.98
1500 Crew Cab SLT	5.3L V8	4WD	59	0.98
1500 Extended Cab SLE	4.3L V6	RWD	45	0.74
1500 Extended Cab SLT	5.3L V8	RWD	59	0.98
1500 Extended Cab SLT	5.3L V8	4WD	59	0.98
1500 Regular Cab SLE	4.8L V6	RWD	40	0.67
Crew Cab Denali	6.2L V8	RWD	65	1.07
Crew Cab Denali	6.2L V8	AWD	65	1.07