Research

2003 GMC Sierra Denali Ext Cab 143.5" WB Specs

Ext Cab 143.5" WB
MSRP based on Ext Cab 143.5" WB
 

Quick Specs

Gas Mileage 12 mpg City/16 mpg Hwy
Engine Gas V8, 6.0L
EPA Class No Data
Style Name AWD Extended Cab Short Box
Drivetrain All Wheel Drive
Passenger Capacity 5
Passenger Doors 2
Body Style Extended Cab Pickup - Short Bed
Transmission Transmission, 4-speed automatic, heavy-duty, electronically controlled w/overdrive, tow/haul mode & external transmission oil cooler

Dimensions

Weight Information
Curb Weight - Front (lbs) 2913
Gross Axle Wt Rating - Front (lbs) 3925
Gross Combined Wt Rating (lbs) 14,000
Curb Weight - Rear (lbs) 1884
Gross Axle Wt Rating - Rear (lbs) 4000
Gross Vehicle Weight Rating Cap (lbs) 7200
Interior Dimensions
Front Leg Room (in) 41.3
Second Shoulder Room (in) 66.3
Passenger Capacity 5
Second Head Room (in) 38.4
Front Shoulder Room (in) 65.2
Second Hip Room (in) 61.5
Front Head Room (in) 41.0
Second Leg Room (in) 33.7
Front Hip Room (in) 61.4
Exterior Dimensions
Width, Max w/o mirrors (in) 83.5
Cab to Axle (in) 41.9
Ground Clearance, Front (in) 8.0
Wheelbase (in) 143.5
Overhang, Rear w/o bumper (in) 47.3
Ground to Top of Frame (in) - TBD -
Height, Overall (in) 73.9
Cab to End of Frame (in) - TBD -
Ground Clearance, Rear (in) 8.3
Length, Overall w/o rear bumper (in) 227.7
Front Bumper to Back of Cab (in) 138.5
Frame Width, Rear (in) - TBD -
Overhang, Front (in) 36.9
Ground to Top of Load Floor (in) 32.9
Cargo Area Dimensions
Cargo Box Width @ Floor (in) 64.8
Ext'd Cab Cargo Volume (ft³) - TBD -
Cargo Box Length @ Floor (in) 78.7
Tailgate Width (in) 63.8
Cargo Box Width @ Wheelhousings (in) 50.0
Cargo Box Width @ Top, Rear (in) 63.8
Cargo Volume (ft³) 56.9
Cargo Box (Area) Height (in) 19.5

Fuel Economy

Fuel Tank
Fuel Tank Location LH
Fuel Tank Capacity, Approx (gal) 26
Aux Fuel Tank Location NA
Aux Fuel Tank Capacity, Approx (gal) NA
Mileage
EPA Fuel Economy Est - City (MPG) 12
EPA Fuel Economy Est - Hwy (MPG) 16

Performance Specs

Engine
Displacement 6.0L/364
Engine Order Code LQ4
SAE Net Torque @ RPM 370 @ 4000
Fuel System SFI
Engine Type Gas V8
Engine Oil Cooler NA
SAE Net Horsepower @ RPM 325 @ 5000
Transmission
Trans Type 4
Third Gear Ratio (:1) 1.00
Clutch Size (in) NA
Transfer Case Gear Ratio (:1), Low - TBD -
Drivetrain All Wheel Drive
First Gear Ratio (:1) 3.06
Sixth Gear Ratio (:1) NA
Transfer Case Model New Venture Gear NVG 149 AWD
Trans Description Cont. Automatic w/OD
Fourth Gear Ratio (:1) 0.70
Trans Power Take Off NA
Transfer Case Power Take Off NA
Trans Order Code M32
Second Gear Ratio (:1) 1.63
Reverse Ratio (:1) 2.29
Transfer Case Gear Ratio (:1), High - TBD -
Trans Description Cont. Again NA
Fifth Gear Ratio (:1) NA
Trans PTO Access NA
Seventh Gear Ratio (:1) NA
Brakes
Brake ABS System (Second Line) NA
Drum - Rear (Yes or ) NA
Brake Type Pwr
Front Brake Rotor Diam x Thickness (in) 12.1 x 1.10
Disc - Front (Yes or ) Yes
Rear Drum Diam x Width (in) NA
Brake ABS System Four-Wheel
Rear Brake Rotor Diam x Thickness (in) 12.8 x 0.78
Disc - Rear (Yes or ) Yes
Steering
Steering Ratio (:1), At Lock - TBD -
Steering Type Pwr
Turning Diameter - Curb to Curb (ft) 37.4
Steering Ratio (:1), On Center 14.2
Turning Diameter - Wall to Wall (ft) - TBD -
Tires
Spare Tire Order Code NA
Rear Tire Capacity (lbs) 2134
Front Tire Order Code QAN
Spare Tire Size P265/75R16
Revolutions/Mile @ 45 mph - Rear - TBD -
Front Tire Size P265/70R17
Spare Tire Capacity (lbs) 2134
Rear Tire Order Code QAN
Front Tire Capacity (lbs) 2134
Revolutions/Mile @ 45 mph - Spare - TBD -
Rear Tire Size P265/70R17
Revolutions/Mile @ 45 mph - Front - TBD -
Wheels
Spare Wheel Size (in) 16 x 6.5
Front Wheel Size (in) 17 x 7
Spare Wheel Material Steel
Front Wheel Material Aluminum
Rear Wheel Size (in) 17 x 7
Rear Wheel Material Aluminum
Suspension
Spring Capacity - Front (lbs) 3925
Axle Capacity - Rear (lbs) 4000
Stabilizer Bar Diameter - Front (in) 1.13
Suspension Type - Front Torsion Bar
Axle Type - Rear Semi-Floating
Shock Absorber Diameter - Front (mm) 32
Spring Capacity - Rear (lbs) 4000
Axle Ratio (:1) - Front 4.10
Stabilizer Bar Diameter - Rear (in) - TBD -
Suspension Type - Rear 4-Stage Multi-Leaf
Axle Capacity - Front (lbs) 3925
Shock Absorber Diameter - Rear (mm) 32
Axle Type - Front Independent
Axle Ratio (:1) - Rear 4.10

Safety Features

Safety
Air Bag-Frontal-Driver Yes
Air Bag-Frontal-Passenger Yes
Air Bag-Passenger Switch (On/Off) No
Air Bag-Side Body-Front No
Air Bag-Side Body-Rear No
Air Bag-Side Head-Front No
Air Bag-Side Head-Rear No
Brakes-ABS Yes
Child Safety Rear Door Locks No
Daytime Running Lights Yes
Traction Control No
Night Vision No
Rollover Protection Bars No
Fog Lamps Yes
Parking Aid No
Tire Pressure Monitor No
Back-Up Camera No
Stability Control No
Other Features Brakes, 4-wheel antilock, 4-wheel disc
Air bags, frontal, driver & right front passenger-inc: Passenger...
Daytime running lamps-inc: automatic exterior lamp control

Warranty

Warranty
Basic Miles/km 36,000
Basic Years 3
Corrosion Miles/km 100,000
Corrosion Years 6
Drivetrain Miles/km 36,000
Drivetrain Years 3
Roadside Assistance Miles/km 36,000
Roadside Assistance Years 3

Other Specs

Cooling System
Total Cooling System Capacity (qts) 15.4
Electrical
Maximum Alternator Capacity (amps) 145
Cold Cranking Amps @ 0° F (Primary) 600
Maximum Alternator Watts NA
Cold Cranking Amps @ 0° F (2nd) NA
Trailering
Wt Distributing Hitch - Max Trailer Wt. (lbs) 10000
Dead Weight Hitch - Max Trailer Wt. (lbs) 5000
Fifth Wheel Hitch - Max Tongue Wt. (lbs) 1380
Wt Distributing Hitch - Max Tongue Wt. (lbs) 1000
Dead Weight Hitch - Max Tongue Wt. (lbs) 600
Fifth Wheel Hitch - Max Trailer Wt. (lbs) 9200