Karl Tyler Chevrolet: 2008 Avalanche Specifications

**Fuel Economy**
Engines	EPA estimated MPG city/hwy.
Vortec 5.3L V8
2WD	14/20
2WD FlexFuel (E85)	11/15
4x4	14/19
4x4 FlexFuel (E85)	11/14
Vortec 6.0L V8
2WD	12/17
4x4	12/17

Exterior (inches)
Wheelbase	130
Length	221.30
Height	76.60
Width	79.10
Ground to top of rear load floor (liftover height) (2WD/4x4)	32.2/32.5

Clearances (inches)
Ground clearance (min.)
2WD, front	10.5
2WD, rear	9.1
4x4, front	10.5
4x4, rear	9.1

Interior (inches)	Front	Rear
Headroom	41.10	40.0
Legroom	41.30	39.1
Shoulder room	65.30	65.2
Hip room	64.40	62.3

**Capacities**

Seating	5–6
Fuel (approx. gallons)	31
GVWR, standard (lbs.)¹
2WD	7000
4x4	7200
Payload, base (lbs.)²
2WD	1395
4x4	1471
Curb weights, estimated (lbs.)
2WD	5605
4x4	5729

1 Gross Vehicle Weight Rating (GVWR). When properly equipped; includes weight of vehicle, driver, passengers, optional equipment and cargo.

2 Maximum payload capacity includes weight of driver, passengers, optional equipment and cargo.

**Trailering**
	Vortec 5.3L V8 (Automatic)		Vortec 6.0L V8 (Automatic)
MODEL	Max. Trailer Weight (lbs.)¹	Required Axle Ratio	Max. Trailer Weight (lbs.)¹	Required Axle Ratio
2WD	7200	3.73
4x4	7000	3.73
2WD	8200	4.10	8000	4.10
4x4	8000	4.10	7700	4.10

1 Maximum trailer weight ratings are calculated assuming a base vehicle, except for any option(s) necessary to achieve the rating, plus driver. The weight of other optional equipment, passengers and cargo will reduce the maximum trailer weight your vehicle can tow. See your Chevy dealer for additional details. NOTES: Trailer tongue weight should be 10 to 15 percent of total loaded trailer weight (up to 1,000 lbs.). Addition of trailer tongue weight cannot cause vehicle weights to exceed Rear Gross Axle Weight Rating (RGAWR) or Gross Vehicle Weight Rating (GVWR). These ratings can be found on the certification label located on the driver door or door frame. For recreational towing restrictions and availability, consult the Owner’s Manual.

**Braking**
	U.S. Standard	Metric
Type (power)	Four-wheel disc
Antilock system	Standard four-wheel

**Engine**
	Vortec 5.3L V8	Vortec 5.3L V8 FlexFuel	Vortec 5.3L V8 FlexFuel	Vortec 6.0L V8
RPO	LY5	LMG	LC9	L76
Availability	standard	standard	standard	standard
Displacement (cu. in.)	325	325	325	366
Cylinder-block material	cast-iron	cast-iron	cast-iron	cast-aluminum
Cylinder-head material	cast-aluminum	cast-aluminum	cast-aluminum	cast-aluminum
Valvetrain configuration	OHV	OHV	OHV	OHV
Valves per cylinder	2	2	2	2
Ignition	direct, coil-near-plug	direct, coil-near-plug	direct, coil-near-plug	direct, coil-near-plug
Lifters	hydraulic roller	hydraulic roller	hydraulic roller	hydraulic roller
Cam drive	chain	chain	chain	chain
Alternator rating (amps)	160	160	160	145
Battery (SAE rating, cca)	600	600	600	600
Recommended unleaded fuel	87 octane	87 octane	87 octane	87 octane
Horsepower @ RPM	320 @ 5,200	320 @ 5,200	310 @ 5,200	366 @ 5,500
Torque (lb.-ft.) @ RPM	340 @ 4,200	340 @ 4,200	335 @ 4,400	380 @ 4,300

**Steering**
	2WD	4x4
Type (power)	rack-and-pinion	rack-and-pinion
Turning diameter
(curb-to-curb ft.)	43.0	43.0

**Transmission**
	Hydra-Matic four-speed automatic	Hydra-Matic four-speed automatic
RPO	M30 (4L60-E)	M70 (4L70-E)
First gear	3.06	3.06
Second gear	1.63	1.63
Third gear	1.00	1.00
Fourth gear	0.70	0.63
Reverse gear	2.29	2.29
Case material	cast-aluminum	cast-aluminum