1990 SUBURBAN FACTS, SPECS AND STATISTICS

This page is dedicated to facts, specifications and statistics specific to 1990 Suburbans only. This is a work in progress... Rows highlighted in Red are what my Grand Prix Suburban came with. If you have any information and would like to contribute, please email me.

 

Available Models

The 2 wheel drive Suburban was known as the R model and the 4 wheel drive was the V model. 1/2 tons were the 1500 series and the 3/4 ton models were the 2500 series. The 1500s and the 2500s are known as light duty trucks and fall within the Class 1 (0-6000 lb GVWR) and Class 2 (6001 lb - 10000 lb GVWR) ratings respectively.

Model   Height Width Length Wheelbase
R1500 4 X 2 72.0 in (1829 mm) 79.6 in (6' 7.6") 219.1 in (18' 3.1") 129.5 in (10' 9.5")
R2500 4 X 2 74.3 in (1887 mm) 79.6 in (6' 7.6") 219.1 in (18' 3.1") 129.5 in (10' 9.5")
V1500 4 X 4 73.8 in (1875 mm) 79.6 in (6' 7.6") 219.1 in (18' 3.1") 129.5 in (10' 9.5")
V2500 4 X 4 76.1 in (1993 mm) 79.6 in (6' 7.6") 219.1 in (18' 3.1") 129.5 in (10' 9.5")

 

COLOR COMBINATIONS

See Exterior Paint Colors

 

MSRP

Model Transmission MSRP
R1500 Panel Doors N/A $15,615.00
R1500 Tailgate N/A $15,765.00
R1500 Panel Doors Diesel N/A $18,060.00
R1500 Tailgate Diesel N/A $18,205.00
R2500 Panel Doors 4-Speed Manual $16,238.00
R2500 Tailgate 4-Speed Manual $16,383.00
R2500 Panel Doors Diesel N/A $18,643.00
R2500 Tailgate Diesel N/A $18,793.00
V1500 Panel Doors 4WD 4-Speed Manual $16,645.00
V1500 Tailgate 4WD 4-Speed Manual $16,795.00
V2500 Panel Doors 4WD 4-Speed Manual $18,083.00
V2500 Tailgate 4WD 4-Speed Manual $18,233.00
V1500 Panel Doors Diesel 4WD N/A $19,865.00
V1500 Tailgate Diesel 4WD N/A $20,010.00
V2500 Panel Doors Diesel 4WD N/A $20,493.00
V2500 Tailgate Diesel 4WD N/A $20,643.00

 

Trim Options

The eblems were located on the pillar behind the passenger doors. There were no fender emblems on the 1990 model year.

Trim Level RPO Code Description Emblem
Scottsdale/SLX N/A The Scottsdale/SLX trim level is the standard trim level of the R/V Suburban series. It is designed to offer buyers a high level of standard features when purchasing a standard level vehicle.
Silverado/SLE YE9 The Silverado/SLE trim level is the top of the line R/V Suburban trim level. It offers buyers maximum comfort and convenience in a full size sport/utility vehicle.

 

Rear Door Types

All Suburban models can be ordered with either standard panel rear doors or an optional tailgate with electric window.

Door Type RPO Code Photo
Optional Tailgate with Electric Window E55
Panel Doors (Barn Doors) ZW9

 

Dimensions

Model   Height Width Length Wheelbase
R1500 4 X 2 72.0 in (1829 mm) 79.6 in (6' 7.6") 219.1 in (18' 3.1") 129.5 in (10' 9.5")
R2500 4 X 2 74.3 in (1887 mm) 79.6 in (6' 7.6") 219.1 in (18' 3.1") 129.5 in (10' 9.5")
V1500 4 X 4 73.8 in (1875 mm) 79.6 in (6' 7.6") 219.1 in (18' 3.1") 129.5 in (10' 9.5")
V2500 4 X 4 76.1 in (1993 mm) 79.6 in (6' 7.6") 219.1 in (18' 3.1") 129.5 in (10' 9.5")

 

Wheels

Front and rear rims and tires were the same size.

Model Engine Wheel Size Capacity Bolt Holes Bolt Circle Diameter Offset Revolutions/mi
R1500 4x2 Gas 15" x 6.00" 1984 lbs 5 5" 0 722
R1500 4x2 Diesel 15" x 6.00" 1984 lbs 5 5" 0 722
R2500 4x2 Gas 15" x 6.50" 3045 lbs 8 6.5" 17 mm 653
R2500 4x2 Diesel 15" x 6.50" 3045 lbs 8 6.5" 17 mm 653
V1500 4x4 Gas 15" x 6.00" 2040 lbs 6 5.5" 0 722
V1500 4x4 Diesel 15" x 6.00" 2040 lbs 6 5.5" 0 722
V2500 4x4 Gas 16" x 6.50" 2040 lbs 8 6.5" 17 mm 653
V2500 4x4 Diesel 16" x 6.50" 2040 lbs 8 6.5" 17 mm 653
R/V Suburban Option Wheels
Rally N67 15" x 8.00" 3045 lbs 8 6.5" 127 mm  
Cast Aluminum N90 15" x 7.00" 1843 lbs 5 5.0" 13 mm  
Std. Wheels
w/Hubcap
Std. Wheels w/
Wheel Cover
Rally
5 bolt
Rally
6 bolt
Cast Alum
5 bolt
Cast Alum
6 bolt

 

Available Engines

Cubic Inch Litres Fuel Block RPO CODE GVRW Horsepower Torque Notes
350 5.7L gas V8 small block L05 up to 8500 lbs 210 @ 4000 rpm 300 ft lbs @ 2800 rpm  
350 5.7L gas V8 small block L05 10,000 lbs 190 @ 4000 rpm 300 ft lbs @ 2800 rpm  
379 6.2L diesel V8 small block LH6 up to 8500 lbs 145 @ 3600 rpm 255 ft lbs @ 1900 rpm  
379 6.2L H.D. diesel V8 small block LL4 10,000 lbs 155 @ 3600 rpm 270 ft lbs @ 2000 rpm  
454 7.4L gas V8 big block L19   230 @ 3600 rpm 385 ft lbs @ 1600 rpm  

 

Available Transmissions

The four-speed Turbo Hydra-Matic (THM) 700R4 was introduced for the 1982 model year. In 1990, the Turbo Hydra-Matic 700R4 was became the 4L60 but the Suburban continued to use the 700R4 through 1991.

Type Model RPO Code Speeds Oil Capacity Oil Type Notes
Manual SM465 MM4 4 8 pints    
Manual MM5 5 8 pints    
Automatic 400 MX1 3 20 pints (Dry fill)
5 pints (refill)
   
Automatic 700R4 MX0 4 w/overdrive 19 pints (Dry fill)
10 pints (refill)
DEXRON IIE  

700R4

Dexron transmission fluid was introduced in 1968 by General Motors and was originally associated with automatic transmission fluids but GM later released DEXRON gear oils and other lubricants (ATF, Gear Oil, Manual Trans Fluid, Dual Clutch Trans Fluid, Hyrdaulic Fluid, Power Steering Fluid, Traction Drive Fluid) under the DEXRON brand. The original Dexron was replaced by by Dexron-II (1973), Dexron-IIE (1989), Dexron-III (1993), Dexron-IV and Dexron-VI (2005), which is the current fluid. Newer fluids are generally backward compatible with previous fluids by not always. Watch this GM video about Dexron.

 

Available Transfer Case

In 1988, GM began using the NP241 transfer cases. Most of these units will be right hand drop, but Chevy also used a few left hand drop applications. The Chevy NP241 is supplied with a 27 spline female input or a 32 spline female input. With a T350, 4L60E or 700R4 tranny, it will be 27 spline. With a T400 or 4L80E trans or 5 speed, it will be 32 spline. There was only 1 available transfer case in 1990, the NP241C.

Model Availability Ratios Lever Position Lever Location Oil Capacity
NP 241C
(New Process)
V1500 /
V2500
1.00:1
2.72:1
4-Lo (All-Wheel Underdrive)
N (Neutral)
2-Hi (Rear Wheel Drive)
4-Hi (All-Wheel Drive)
Rear of
Transmission at
Center of Floor
10 pints
Dexron ATF

 

Gross Vehicle Weight

GVW
6250 lbs
7000 lbs

 

Fuel Economy / Gas Mileage

Model MPG City MPG Hwy MPG Avg
R1500 2WD 8 cyl, 5.7 L, Automatic 4-spd, Regular 12 14 17
R1500 2WD 8 cyl, 6.2 L, Automatic 4-spd, Diesel 15 17 21
V1500 4WD 8 cyl, 5.7 L, Automatic 4-spd, Regular 11 13 15
V1500 4WD 8 cyl, 5.7 L, Manual 4-spd, Regular 11 12 13
V1500 4WD 8 cyl, 6.2 L, Automatic 4-spd, Diesel 14 16 19

 

Seating Options

Seating Option RPO Code Description
Standard Front Bench Seat ***1 A three passenger front bench seat is standard. All other seats are optional.
Optional Reclining Front Bucket Seats ***6 Two reclining front bucket seats with floor and roof console and folding arm rests are optional on Silverado models only.
Optional Folding Center Seat AS3 A three passenger removeable center seat is optional.
Optional Folding Center Seat and Removable Rear Seat AT5 A three passenger center seat together with a three passenger, removable rear seat are optional.

 

Radios

Radio Type RPO Code Description Photo
Elec. Tuned AM/FM Stereo UM7 Standard ETR AM Radio with Digital Clock. 14 Presets, Digital Display, Two 3.5" Front Speakers/2 4" x 10" Rear Speakers, 28 Watt Total Power Output
Elec. Tuned AM/FM Stereo Cassette Tape + Clock UM6 Optional ETR AM/FM stereo radio with premium dual rear speakers. Seek and Scan and digital clock. 14 Presets, Digital Display, Two 3.5" Front Speakers/2 4" x 10" Rear Speakers, 28 Watt Total Power Output  
Elec. Tuned AM/FM Stereo Cassette Tape w/Search Repeat + Clock UX1 Optional ETR AM stereo/FM stereo radio with premium dual rear speakers, Seek and Scan, graphic equalizer and digital clock, plus stereo cassette tape player with Search and Repeat. 14 Presets, Digital Display, Two 3.5" Front Speakers/2 4" x 10" Rear Speakers, 28 Watt Total Power Output
Radio Delete UL5    

 

Exterior Mirrors

Mirror Type RPO Code Description Photo
Camper Type DF2 Stainless Steel
Below-Eye Line Type D45 Stainless Steel
Electric Type D48 Optional dual electric outside rearview mirrors provide the Suburban driver with one touch, fingertip control for mirror adjustments. (Requires Silverado trim and Driver Convenience Group.)

 

Available options For the V1500 4x4 With Panel Doors

Option RPO Code Description
A/C Front C60 Included with C69 Front and Rear Air. Incl. 78 Amp Alternator w/LH6 Diesel
A/C Front and Rear C69 Includes C60 Front Air Conditioning. Incl. 78 Amp Alternator w/B3j Diesel; w/o B3j Incls 105 Amp Alternator
Cold Climate Package V10 Includes Engine Block Heater
Driver Convenience Pkg ZQ2 Includes Power Door Locks and Side Door Power Windows
Operating Convenience Pkg ZQ3 Includes Tilt Wheel and Speed Control
Engine Oil Cooler KC4 Included with Z82 Trailering
Heavy Duty Radiator V01  
HD Radiator & Trans Oil Cooler V02 Included with Z82 Trailering
Rear Window Defogger C49 Electric, Included with ZW9
Power Door Locks AU3 Side Doors Only
Deep Tinted Glass AJ1  
Wiring Harness UY7 Heavy Duty Trailer, 7-Lead. Included with Z82 Trailering
Auxiliary Rear Heater C36  
Locking Hubs X6Z Automatic
Roof Marker Lamps U01  
Exterior Mirrors - Below-Eye Line Type D45 Stainless Steel
Exterior Mirrors - Camper Type DF2 Stainless Steel
Exterior Mirrors - Electric D48 Remote Electric
Exterior Paint - Solid ZY1  
Exterior Paint - Conventional Two-Tone ZY2  
Exterior Paint - Special Two-Tone ZY3  
Exterior Paint - Deluxe Two-Tone ZY4  
Radio - Elec. Tuned AM/FM Stereo UM7 14 Presets, Digital Display, Two 3.5" Front Speakers/2 4" x 10" Rear Speakers, 28 Watt Total Power Output
Radio - Elec. Tuned AM/FM Stereo Cassette Tape + Clock UM6 14 Presets, Digital Display, Two 3.5" Front Speakers/2 4" x 10" Rear Speakers, 28 Watt Total Power Output
Radio - Elec. Tuned AM/FM Stereo Cassette Tape w/Search Repeat + Clock UX1 14 Presets, Digital Display, Two 3.5" Front Speakers/2 4" x 10" Rear Speakers, 28 Watt Total Power Output
Radio Delete UL5  
Seating - Center Folding AT5 Incl. w/AS3 Center and Rear Seats, Includes Should Belts (used because of the conversion pkg would replace them.)
Seating - Center and Rear Seats AS3 Incl. AT5 Center Folding Seat, Available with or without Rear Seat Shoulder Belts
Seating - Rear Seat Not Desired YG4  
Fuel Tank Shield NY1 Includes Protective Shield on Transfer Case for V Series
Front Quad Shocks Z75  
Silverado/SLE YE9  
Springs F60 Front Heavy Duty, Capacity 2250-lb Ea, includes Heavy Duty Front and Rear Shocks w/o Z75 Shock or B3J Diesel
Trailer Hitch - Weight Distributing Platform Type VR4  
Trailering Special Equip. Z82 Heavy-Duty, Includes VR4 Hitch, UY7 Wiring and VO2 Oil Cooler
Transmission 4 Speed Auto w/Overdrive MX0  
Wheel Trim P01 Wheel Covers; Incl w/YE9 Silverado/SLE (used because of the conversion pkg would replace them.)
Rally Wheels - Rally N67  
Rally Wheels - Aluminum Cast N90  

 

RPO Codes

RPO stands for Regular Production Option and is a General Motors standard coding for vehicle configuration options. The codes are 3 alphanumeric characters which refer to a specific option or modification to the vehicle. RPO codes have been re-used over different years and the popular or noteable codes have always represented the same function but less popular codes can represent different options between the years. A great site for finding all the RPO codes is www.rpocodes.com

Here is the list of RPO codes found on the Service Parts Identification label inside my glove box and their definitions:

RPO CODE Description
AJ1 WINDOW TINTED, DEEP, ALL EXCEPT W/S AND DRS
AT5 SEAT RR, CTR, FLDG
AU3 LOCK CONTROL, SIDE DR, ELEC
AXP VIN IDENT POSITION, MULTI-PURPOSE VEHICLE
A31 WINDOW, POWER OPERATED, SIDE
A52 SEAT, FRT BENCH
BC3 ORNAMENTATION, INTR, I/P, DELUXE
B30 COVERING, FLOOR CARPET
B32 COVERING, FRT FLOOR MATS AUX
B33 COVERING, REAR FLOOR MATS AUX
B85 ORNAMENTATION, EXTR MLDG BELT REVEAL
B96 MOLDING WHL OPENING
CMD PLANT CODE, FLINT MI
C49 DEFOGGER, RR WINDOW, ELECTRIC
C5W GVW RATING, 7000 LBS
C60 HVAC SYSTEM, AIR CONDITIONER FRT MAN CONTROLS
D48 MIRROR O/S, REM CONT, ELEC PAINTED
G80 LOCKING DIFFERENTIAL, REAR AXLES
GT4 3.73:1 (FINAL DRIVE OPTION CODES RPO FINAL DRIVE)
JB5 BRAKE, POWER, DISC/DRUM, 6400 LBS
KC4 COOLING SYSTEM, ENG OIL
K05 HEATER ENG, BLOCK
K34 CRUISE CONTROL, AUT0MATIC, ELECTRONIC
K60 GENERATOR, 100 AMP
L05 5.7L V8 TBI K (TRUCK ENGINE CODES RPO ENGINE TYPE VIN 8)
MD8 TRANSMISSION, AUTO 4 SPD, THM 700 R4
MXO MERCHANDISED, TRANS, AUTO PROVISIONS, O/D
NA5 EMISSION SYSTEM, FEDERAL, TIER O
NK3 STEERING WHEEL, SPORT, SOFT RIM, SIMULATED LEATHER
N33 STEERING COLUMN, TILT TYPE
P01 TRIM DISCS, WHEEL, VAR 1
R6N CONTROL SALES ITEM NO. 14
R6P SPECIAL PAINT
SLM STOCK ORDER, PROCESSING CODE
TR9 LAMP, GROUP
TT4 HEADLAMPS, HALOGEN, 4
UN9 RADIO, SUPPRESSION EQUIPMENT
UP8 STEREO RADIO INSTALLMENT PROVISIONS
UX1 RADIO, AM/FM STEREO CASSETTE EQUALIZER
UY7 WIRING HARNESS, TRUCK TRAILER HD
U73 ANTENNA, FIXED, RADIO
VE5 BUMPER, FRT & RR, IMPACT, CHROME
VG3 BUMPER FRT, IMPACT STRIP
VG5 LABEL, INFORMATION, 5MPH BUMPER IMPACT
VR4 TRAILER HITCH, WEIGHT DISTRIBUTING PLATFORM
V02 RADIATOR, HEAVY DUTY, WITH TRANS OIL COOLER
V10 PROVISION OPTIONS, COLD CLIMATE PACKAGE, INCLUDES BLOCK HEATER
V22 GRILLE, CHROME, RADIATOR
V73 ANTENNA, FIXED
XHB TIRE FRONT P235/75R15/X WS2 R/PE ST TL ALS
X6Z HUB, LOCKING AUTOMATIC
X88 CONVERSION NAME PLT CHEVROLET
YD3 FRONT AXLE, BASE EQUIPMENT FOR SCHEDULING, GVW PLATE
YD5 FRONT SPRING, BASE EQUIPMENT
YD6 REAR SPRING, BASE EQUIPMENT
YE9 CONVENIENCE PKG, COMFORT & DECOR LEVEL #3 (This is the highest decor level.)
YG3 ORNAMENTATION, BODY SIDE 6 WHL OPENING BRIGHT
YHB TIRE REAR P235/75R15/X WS2 R/PE ST TL ALS
ZHB TIRE SPARE P235/75R15/X WS2 R/PE ST TL ALS
ZQ2 DRIVER'S CONVENIENCE PACKAGE, Includes power doors locks and side door power windows
ZQ3 OPERATING CONVENIENCE PACKAGE, Includes tilt wheel and speed control
ZW9 B0DY EQUIPMENT, BASE BODY OR CHASSIS
ZY1 COLOR COMBINATION, SOLID
Z75 QUAD SHOCK OPTION
Z82 TRAILER PROVISIONS, SPECIAL EQUIPMENT, H.0.
1SC PACKAGE, OPTION 03
74U PRIMARY COLOR, EXTERIOR, VICTORY RED (91)
82D TRIM COMBINATION, CLOTH, MED DK GRAY (D) (91)
82I INTERIOR TRIM, MED DK GRAY (91)

 

 

This site is powered by a Chevy 350 V8.    Feel Free to Email Me with any questions about my truck or this web site. back to top