GMC Sierra 1500 Classic ›› 1999 ›› 1999 GMC Sierra 1500 Classic Specs

1999 GMC Sierra 1500 Classic

Select another year: 2007 1999

Specs

Research 1999 GMC Sierra 1500 Classic specs for the trims available. Choose the desired trim / style from the dropdown list to see the corresponding specs.

2WD Extended Cab Short Box

Brakes

Rear Drum Diam x Width (in) 10.0 x 2.25
Disc - Rear (Yes or )
Disc - Front (Yes or ) Yes
Brake ABS System (Second Line)
Brake ABS System Four Wheel
Brake Type Power
Front Brake Rotor Diam x Thickness (in) 11.57 x 1.25
Rear Brake Rotor Diam x Thickness (in)
Drum - Rear (Yes or ) Yes

Cargo Area Dimensions

Cargo Box Width @ Floor (in) 64.4
Ext'd Cab Cargo Volume (ft³) 40.5
Cargo Volume (ft³) 55.6
Cargo Box Width @ Top, Rear (in) 60.2
Tailgate Width (in) 62.0
Cargo Box (Area) Height (in) 19.2
Cargo Box Width @ Wheelhousings (in) 49.1
Cargo Box Length @ Floor (in) 78.7

Cooling System

Total Cooling System Capacity (qts) 16.7
Total Cooling System Capacity (qts) 17.1

Electrical

Cold Cranking Amps @ 0° F (2nd) 600
Cold Cranking Amps @ 0° F (2nd)
Maximum Alternator Capacity (amps) 100
Maximum Alternator Watts 1200
Cold Cranking Amps @ 0° F (Primary) 600

Engine

Engine Order Code L31
Engine Order Code L30
Engine Type Gas V8
Displacement 5.7L/350
Displacement 5.0L/305
Fuel System SFI
SAE Net Horsepower @ RPM 255 @ 4600
SAE Net Horsepower @ RPM 230 @ 4600
SAE Net Torque @ RPM 330 @ 2800
SAE Net Torque @ RPM 285 @ 2800
Engine Oil Cooler Yes
Engine Oil Cooler

Exterior Dimensions

Ground to Top of Load Floor (in) 31.4
Length, Overall w/o rear bumper (in) 218.5
Cab to Axle (in) 41.9
Cab to End of Frame (in)
Wheelbase (in) 141.5
Front Bumper to Back of Cab (in) 135.0
Width, Max w/o mirrors (in) 76.8
Height, Overall (in) 70.6
Overhang, Front (in) 35.4
Overhang, Rear w/o bumper (in) 41.6
Ground Clearance, Front (in) 6.9
Frame Width, Rear (in) 36.7
Ground to Top of Frame (in)
Ground Clearance, Rear (in) 6.9

Frame

Frame Type Ladder

Fuel Tank

Aux Fuel Tank Capacity, Approx (gal)
Aux Fuel Tank Location
Fuel Tank Location Inboard LH Frame
Fuel Tank Capacity, Approx (gal) 25

Interior Dimensions

Passenger Capacity 6
Front Head Room (in) 40.0
Front Leg Room (in) 41.5
Front Shoulder Room (in) 65.0
Front Hip Room (in) 60.1
Second Head Room (in) 38.0
Second Leg Room (in) 28.7
Second Shoulder Room (in) 67.6
Second Hip Room (in) 66.1
Passenger Capacity 5

Mileage

EPA Fuel Economy Est - City (MPG) 14
EPA Fuel Economy Est - Hwy (MPG) 19
EPA Fuel Economy Est - Hwy (MPG) 18
EPA Fuel Economy Est - City (MPG) 15

Steering

Steering Ratio (:1), At Lock 15.6
Turning Diameter - Curb to Curb (ft) 46.6
Turning Diameter - Wall to Wall (ft) 50.9
Steering Type Power
Steering Ratio (:1), On Center 16.5

Summary

Vehicle Name GMC Sierra Classic 1500
Body Style Ext Cab 6.5' Wideside
Body Code E63

Suspension

Shock Absorber Diameter - Front (mm) 32
Suspension Type - Front Indep Coil Spring
Suspension Type - Rear 2-Stage Multi-Leaf
Spring Capacity - Front (lbs) 3600
Spring Capacity - Front (lbs) 3500
Spring Capacity - Rear (lbs) 3750
Axle Type - Front
Axle Type - Rear Semi-Floating
Axle Capacity - Front (lbs) 3600
Axle Capacity - Rear (lbs) 4800
Axle Capacity - Rear (lbs) 3750
Axle Ratio (:1) - Front
Axle Ratio (:1) - Rear 3.08
Axle Ratio (:1) - Rear 3.73
Axle Ratio (:1) - Rear 3.42
Shock Absorber Diameter - Front (mm) 46 Gas
Shock Absorber Diameter - Front (mm) 25
Shock Absorber Diameter - Rear (mm) 32
Shock Absorber Diameter - Rear (mm) 46 Gas
Shock Absorber Diameter - Rear (mm) 25
Stabilizer Bar Diameter - Front (in) 1.25
Stabilizer Bar Diameter - Rear (in)

Tires

Rear Tire Order Code YFL
Spare Tire Capacity (lbs) 1843
Revolutions/Mile @ 45 mph - Front 722
Revolutions/Mile @ 45 mph - Rear 722
Revolutions/Mile @ 45 mph - Spare 722
Rear Tire Capacity (lbs) 1843
Front Tire Capacity (lbs) 1843
Spare Tire Size P235/75R15
Rear Tire Size P235/75R15
Front Tire Size P235/75R15
Spare Tire Order Code ZFL
Spare Tire Order Code ZFN
Front Tire Order Code XFN
Front Tire Order Code XFL
Rear Tire Order Code YFN

Trailering

Dead Weight Hitch - Max Trailer Wt. (lbs) 5000
Dead Weight Hitch - Max Tongue Wt. (lbs) 500
Wt Distributing Hitch - Max Trailer Wt. (lbs) 10,000
Wt Distributing Hitch - Max Tongue Wt. (lbs) 1000
Fifth Wheel Hitch - Max Trailer Wt. (lbs)
Fifth Wheel Hitch - Max Tongue Wt. (lbs)

Transmission

Seventh Gear Ratio (:1)
Transfer Case Power Take Off
Transfer Case Gear Ratio (:1), Low
Transfer Case Gear Ratio (:1), High
Transfer Case Model
Trans PTO Access
Trans Power Take Off
Clutch Size (in)
Reverse Ratio (:1) 2.29
Sixth Gear Ratio (:1)
Fifth Gear Ratio (:1)
Fourth Gear Ratio (:1) 0.70
Third Gear Ratio (:1) 1.00
Second Gear Ratio (:1) 1.63
First Gear Ratio (:1) 3.06
Trans Description Cont. Again Electronic
Trans Description Cont. Automatic w/OD,
Trans Type 4
Trans Order Code M30
Drivetrain Rear Wheel Drive

Weight Information

Gross Axle Wt Rating - Front (lbs) 3500
Gross Combined Wt Rating (lbs) 10,000
Gross Combined Wt Rating (lbs) 11,000
Gross Combined Wt Rating (lbs) 12,000
Gross Combined Wt Rating (lbs) 11,500
Gross Vehicle Weight Rating Cap (lbs) 6200
Gross Vehicle Weight Rating Cap (lbs) 6600
Curb Weight - Rear (lbs) 1691
Curb Weight - Front (lbs) 2454
Gross Axle Wt Rating - Rear (lbs) 3686
Gross Axle Wt Rating - Front (lbs) 3600
Gross Combined Wt Rating (lbs) 10,500
Gross Combined Wt Rating (lbs) 8,200

Wheels

Front Wheel Size (in) 15 x 7
Rear Wheel Material Chrome
Front Wheel Material Steel
Spare Wheel Material Steel
Rear Wheel Material Steel
Rear Wheel Material Aluminum
Front Wheel Material Aluminum
Front Wheel Material Chrome
Spare Wheel Size (in) 15 x 7
Rear Wheel Size (in) 15 x 7