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

4dr 4WD


Rear Drum Diam x Width (in) 11.2 x 2.75
Drum - Rear (Yes or ) Yes
Rear Brake Rotor Diam x Thickness (in)
Front Brake Rotor Diam x Thickness (in) 11.57 x 1.25
Disc - Rear (Yes or )
Disc - Front (Yes or ) Yes
Brake ABS System (Second Line)
Brake ABS System 4-Wheel
Brake Type Power

Cargo Area Dimensions

Cargo Area Length @ Floor to Console (in)
Cargo Area Length @ Floor to Seat 4 (in)
Cargo Area Length @ Floor to Seat 3 (in)
Cargo Area Length @ Floor to Seat 2 (in) 52.2
Cargo Area Length @ Floor to Seat 1 (in) 77.8
Cargo Volume to Seat 4 (ft³)
Cargo Volume to Seat 3 (ft³)
Cargo Volume to Seat 2 (ft³) 66.9
Cargo Volume to Seat 1 (ft³) 118.2
Cargo Box (Area) Height (in) 40.8
Cargo Box Width @ Wheelhousings (in) 49.4
Cargo Area Width @ Beltline (in) 61.4

Cooling System

Total Cooling System Capacity (qts) 17.1


Side Door Type


Cold Cranking Amps @ 0° F (Primary) 600
Cold Cranking Amps @ 0° F (2nd)
Maximum Alternator Capacity (amps) 140
Maximum Alternator Watts 1680


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

Exterior Dimensions

Wheelbase (in) 117.5
Step Up Height - Side (in)
Overhang, Rear w/bumper (in) 46.3
Step Up Height - Front (in)
Side Door Opening Width (in)
Side Door Opening Height (in)
Rear Door Opening Width (in) 61.4
Rear Door Opening Height (in) 34.2
Ground Clearance, Rear (in) 8.6
Ground Clearance, Front (in) 8.6
Ground to Top of Load Floor (in) 32.1
Overhang, Front (in) 37.6
Height, Overall (in) 74.3
Width, Max w/o mirrors (in) 78.8
Length, Overall w/rear bumper (in) 201.4


Frame Type Ladder

Fuel Tank

Aux Fuel Tank Capacity, Approx (gal)
Aux Fuel Tank Location
Fuel Tank Location Behind Rear Axle
Fuel Tank Capacity, Approx (gal) 29.5

Interior Dimensions

Front Hip Room (in) 59.9
Front Shoulder Room (in) 64.7
Passenger Capacity 5
Front Leg Room (in) 41.7
Front Head Room (in) 39.9
Second Shoulder Room (in) 64.8
Second Leg Room (in) 36.2
Second Hip Room (in) 59.7
Second Head Room (in) 38.9


EPA Fuel Economy Est - Hwy (MPG) 16
EPA Fuel Economy Est - City (MPG) 12


Turning Diameter - Curb to Curb (ft) 40.7
Steering Ratio (:1), On Center 16.4
Turning Diameter - Wall to Wall (ft) 44.6
Steering Type Speed-Sensitive Pwr
Steering Ratio (:1), At Lock 16.3


Vehicle Name GMC Denali
Body Style 4 Door
Body Code E55
Body Code ZW9


Spring Capacity - Front (lbs) 3600
Suspension Type - Front Indep Torsion Bar
Suspension Type - Rear 2-Stage Multi-Leaf
Spring Capacity - Rear (lbs) 3750
Axle Type - Front Independent
Axle Type - Rear Semi-Floating
Axle Capacity - Front (lbs) 3925
Axle Capacity - Rear (lbs) 3750
Axle Ratio (:1) - Front 3.73
Axle Ratio (:1) - Rear 3.73
Shock Absorber Diameter - Front (mm) 46
Shock Absorber Diameter - Rear (mm) 46
Stabilizer Bar Diameter - Front (in) 1.18
Stabilizer Bar Diameter - Rear (in)


Front Tire Order Code QMJ
Front Tire Capacity (lbs) 2184
Spare Tire Size P265/70R16
Rear Tire Size P265/70R16
Front Tire Size P265/70R16
Spare Tire Order Code QMJ
Rear Tire Order Code QMJ
Revolutions/Mile @ 45 mph - Spare 682
Revolutions/Mile @ 45 mph - Rear 682
Revolutions/Mile @ 45 mph - Front 682
Spare Tire Capacity (lbs) 2184
Rear Tire Capacity (lbs) 2184


Dead Weight Hitch - Max Tongue Wt. (lbs) 500
Wt Distributing Hitch - Max Trailer Wt. (lbs) 6500
Wt Distributing Hitch - Max Tongue Wt. (lbs) 800
Fifth Wheel Hitch - Max Trailer Wt. (lbs) N/A
Dead Weight Hitch - Max Trailer Wt. (lbs) 5000
Fifth Wheel Hitch - Max Tongue Wt. (lbs) N/A


Seventh Gear Ratio (:1)
Transfer Case Power Take Off
Transfer Case Gear Ratio (:1), Low 2.72
Transfer Case Gear Ratio (:1), High 1.00
Transfer Case Model New Venture 246
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 4-Wheel Drive


Rear Door Type Tailgate
Rear Door Type Panel Doors

Weight Information

Gross Vehicle Weight Rating Cap (lbs) 6800
Curb Weight - Rear (lbs) 2640
Curb Weight - Front (lbs) 3227
Gross Axle Wt Rating - Rear (lbs) 3750
Gross Axle Wt Rating - Front (lbs) 3600
Gross Combined Wt Rating (lbs) 12,000


Front Wheel Size (in) 16 x 7
Spare Wheel Size (in) 16 x 7
Front Wheel Material Aluminum
Rear Wheel Material Aluminum
Spare Wheel Material Steel
Rear Wheel Size (in) 16 x 7