GM Service Manual Online
For 1990-2009 cars only

RPO

Description

ASA

Seat: Front Bucket, Driver High Back, Self Contained Air Suspension

AV8

Seat: Center Front Bucket, Auxiliary, Folding

BAG

Parts Package Export

BPU

First Position Prop Hanger, NON-BOC, Height A

BPV

First Position Prop Hanger, NON-BOC, Height B

BPW

First Position Prop Hanger, NON-BOC, Height C

BUB

First Position Prop Hanger, NON-BOC, Height D

BUC

First Position Prop Hanger, NON-BOC, Height E

CKD

Vehicle Completely Knocked Down

CV3

Country Mexico

C60

HVAC System Air Conditioner, Front Manual Controls

DF0

Mirror: Outside, LH and RH, 17.8x40.6 cm (7x16 in), SST

DNN

Mirror: Outside, Dual Velvac Heated, 15.2x40.6 cm (6x16 in), Stainless Steel

DTE

Mirror: Auxiliary Outside 20 cm (8 in) Spot, Dual Retrac, SST

EG5

401 cm (158 in) Wheelbase

EH8

432 cm (170 in) Wheelbase

EK8

478 cm (188 in) Wheelbase

EM2

508 cm (200 in) Wheelbase

EQ8

592 cm (233 in) Wheelbase

ERA

Second Position Prop Hanger, Height A

ERB

Second Position Prop Hanger, Height B

ERC

Second Position Prop Hanger, Height C

ERD

Second Position Prop Hanger, Height D

ERE

Second Position Prop Hanger, Height E

ES5

630 cm (248 in) Wheelbase

EV9

Suspension: Attach Bolted

EY1

Yoke: Propeller Shaft, Driveline, Dana®

FD0

Frame: Rail, Full Depth, 612x15 cm (241x6 in), 22 680 kg (50,000 lb)

FD5

Frame: Rail, Full Depth, 622x20 cm (245x8 in), 36 288 kg (80,000 lb)

FF1

Hub: Front, Oil Filled

FK9

Suspension: Front, Multileaf, 4 090 kg (9,017 lb)

FL1

Axle: Front, 3 674 kg (8,100 lb)

FL2

Axle: Front, 4 990 kg (11,000 lb)

FL3

Axle: Front, 6 623 kg (14,600 lb)

FM0

Suspension: Front, Multileaf, 6 610 kg (14,600 lb)

FM4

Suspension: Front, Multileaf, 6 350 kg (14,000 lb)

FPL

554 cm (218 in) Wheelbase

FQT

356 cm (140 in) Wheelbase

FS7

Axle: Front, 5 443 kg (12,000 lb) HD

F03

Frame: Rail, Full Depth, 232x25 cm (249x10 in), 49 896 kg (110,000 lb)

F08

Reinforcement: Frame, Outside, Inverted L Type, 36 288 kg (80,000 lb)

F12

Suspension: Front, Tapered Leaf, 3 175 kg (7,000 lb)

F14

Suspension: Front, Tapered Leaf, 3 674 kg (8,100 lb)

F15

Suspension: Front, Tapered Leaf, 4 082 kg (9,000 lb)

F26

Suspension: Front, Tapered Leaf, 5 443 kg (12,000 lb)

F59

Stabilizer Shaft: Front

GG0

Suspension: Rear, Multileaf, 6 804 kg (15,000 lb)

GG7

Suspension: Rear, Tapered Leaf 7 666 kg (16,900 lb)

GN0

Suspension: Rear, Tapered Leaf, 8 620 kg (19,000 lb)

GN1

Stabilizer Shaft: RR (Dup with F61)

GN2

Suspension: Rear, Multileaf, 8 620 kg (19,000 lb)

GN8

Suspension: Rear, Multileaf, 9 525 kg (21,000 lb)

GPG

Vehicle: Low Profile Package

GP0

Suspension: Rear, Tapered Leaf, 10 430 kg (23,000 lb)

GP1

Suspension: Rear, Multileaf, 10 660 kg (23,500 lb)

GQB

Third Position Prop Hanger, Height A

GQC

Third Position Prop Hanger, Height B

GQD

Third Position Prop Hanger, Height C

GQE

Third Position Prop Hanger, Height D

GQF

Third Position Prop Hanger, Height E

GQ0

Suspension: Rear, Tapered Leaf, 8 600 kg (15,000 lb)

GR9

Suspension: Rear, Tapered Leaf, 9 525 kg (21,000 lb)

GZI

GVW Rating: 11 771 kg (25,950 lb)

GZT

Provisions for Taperleaf/Multileaf Rear Springs

G40

Suspension: Rear Air, 8 618 kg (19,000 lb)

G60

Spring: Rear, Auxiliary

G68

Shock Absorbers: Rear, Heavy Duty

G86

Axle: Limited Slip

G98

Seal: Rear Axle Oil, Stemco

HNA

Axle: Rear, Eaton® 23105S, Single Speed, 10 433 kg (23,000 lb)

HPG

Axle: Rear, Eaton® 22060S, Single Speed, 9 979 kg (22,000 lb)

HPH

Axle: Rear, Eaton® 22060T, Two-Speed, 9 979 kg (22,000 lb)

HPK

Axle: Rear, Eaton® 19060S, Single Speed, 8 618 kg (19,000 lb)

HPM

Axle: Rear, Eaton® 19060T, Two-Speed, 8 618 kg (19,000 lb)

HPP

Axle: Rear, Eaton® 21060S, Single Speed, 9 526 kg (21,000 lb)

HPQ

Axle: Rear, Eaton® 23080S, Two-Speed, 10 433 kg (23,000 lb)

HPZ

Control: Rear Axle Shift, Two-Speed, Electric

H08

Axle: Rear, Dana® S150-S, Single Speed, 6 804  kg (15,000 lb)

H10

Axle: Rear, Eaton® 15040S, Single Speed, 6 804 kg (15,000 lb)

H15

Axle: Rear, Eaton® 21060T, Two-Speed, 9 526 kg (21,000 lb)

H20

Axle: Rear, Eaton® 23080T, Two-Speed, 10 433 kg (23,000 lb)

JE3

Brake: Hydraulic

JE4

Brake: Air

JE5

Braking System, Power, Antilock, Front and Wheel

JPV

Brake Rating: Rear, Air Carlisle, NAB9ML, Non-Abestos Lining, 14 cm (5.5 in) Slack, 42x178 cm (16.5x7 in) Fab Shoe, 16 Hole Mounting

JPZ

Valve: Air Suspension, Air Release

JQB

Universal Joint: Main, 1480/148N Series

JQF

Adjuster: Rear Slack, Automatic, Rockwell

JQM

Universal Joint: Main, 1710/17N Series

JQP

Universal Joint: Main, 1550/155N Series

JQQ

Universal Joint: Main, 1710/17N Series, HD Tube

JQR

Universal Joint: Main, 1610/161N Series

JRA

Universal Joint: Inter Axle, 1610/161N Series

JRF

Shield: Rear Brakes, Dust

JTJ

Brake Adjuster, RR Slack, Eaton® Automatic

JTK

Brake Adjuster, Front Slack, Eaton® Automatic

JTT

Air Dryer B/W Model, AD9 Heated, Brake Air Tank

JUE

Brake Adjuster: Front Slack, Rockwell® Automatic

JUZ

Equipment RR Brake Chamber Brand, MGM E-Series

JVA

Provisions Antilock Brake Delete

JXD

Universal Joint: Main, 1750/176N Series, HD Tube

JXG

Valve: Air Brake Moisture Ejector, B/W DV2, Heated, Front

JYV

Brake Provisions: Full Trailer

JZC

Chamber: Front Brake, Type 16

JZD

Chamber: Front Brake, Type 20

JZE

Chamber: Front Brake, Type 24

JZF

Chamber: Rear Brake, Type 30

J71

Parking Brake: Power Operated

J78

Valve: Moisture Ejector Air Brake

J91

Brake Provisions: Trailer

KG8

Generator: 130 AMP

KRW

Hose: Radiator, Silicone

KVB

Hose: Water, Silicone, Except Radiator

KYC

Air Compressor: Zexel, 185L/MN, Water Cooled

K40

Engine Brake: Exhaust

K60

Generator: 100 AMP

LG4

Engine: Diesel, 6 Cylinder, 7.8L, Turbo

LQB

Engine: Diesel, 6 Cylinder, 7.8L, 149 kW (200 Gross HP), 2400 RPM

LQC

Engine: Diesel, 6 Cylinder, 7.8L, 172 kW (230 Gross HP), 2400 RPM

MF1

Transmission: Allison® AT545, Automatic

MRK

Clutch: 350 mm, (13.8 in) Single Plate, Push Type, Dana-Spicer®

MWE

Pilot Shaft: Automatic Transmission, No Spline

MWF

Pilot Shaft: Automatic Electric Transmission, No Spline

MWM

Clutch Spicer 14-1 Cerametallix, Pull Type, Greasable Bearing

MWW

Pilot Shaft: Transmission, 44.45 mm (1.75 in) Spline

MWX

Pilot Shaft: Transmission, 38.1 mm (1.5 in) Spline

M54

Transmission: Manual, 6 Speed, ISUZU, 136 mm (5.35 in), 6.72 1st, Over Drive

NB5

Exhaust System: Single

NL0

Fuel Tank: 189L, (50 gal), LH, Rectagular, Steel

NL5

Fuel Tank: 189L, (50 gal), Dual, Rectangular, Steel

NXN

Fuel: 57L (15 gal) Additional

NXY

Steering: Power, ZF

PNB

Wheel: Polished Aluminum, Both Sides, Rear

PNQ

Angle: Rear Axle Pinion, Nominal 3°

PNR

Angle: Rear Axle Pinion, Nominal 4°

PNS

Angle: Rear Axle Pinion, Nominal 5°

PNX

Angle: Rear Axle Pinion, Nominal 6°

PNY

Angle: Rear Axle Pinion, Nominal 7°

PQR

Wheel: Front Generic, 8 Hole, 275 mm (10.8 in), BC, FN

PQS

Wheel: Rear Generic, 8 Hole Disc, 275 mm (10.8 in), BC, FN

PQU

Wheel: Front, Generic Steel, 10 Hole, 285.75 mm (11.25 in), BC, Disc Piloted, Disc

PQV

Wheel: Rear, Generic Steel, 10 Hole, 285.75 mm (11.25 in), BC, Disc Piloted, Disc

PQY

Wheel: Front, Generic Steel, 10 Hole, 287.75 mm (11.25 in), BC, Piloted

PQZ

Wheel: Rear, Generic Steel, 10 Hole, 287.75 mm (11.25 in), BC, Piloted

PRS

Identification Pro-Spec

PTA

Provisions Low Profile Front Tires

PVG

Wheel: Front, Generic 8 Hole, 275 mm (10.8 in), BC

PVH

Wheel: Rear, Generic 8 Hole, 275 mm (10.8 in), BC

P2C

Pricing Wheels, Class A

P53

Tire Tread, Spare Tread and Brand, Front Match

P54

Tire Tread, Spare Tread and Brand, Rear Match

QE5

Odometer Rear Axle Hub

QH3

Wheel: Front, 22.5x7.50, 10 Hole, 287.75 mm (11.25 in) BC, FN, Hub Piloted

QH4

Wheel: Rear, 22.5x7.50, 10 Hole, 287.75 mm (11.25 in) BC, FN, Hub Piloted

Q82

Wheel: Front, 19.5x6.0, 8 Hole, 275 mm (10.8 in), BC, FN

Q83

Wheel: Rear, 19.5x6.0, 8 Hole, 275 mm (10.8 in), BC, FN

RNE

Wheel: Front, 22.5x8.25, 10 Hole, 285.75 mm (11.25 in) , BC, Piloted Hub

RNF

Wheel: Rear, 22.5x8.25, 10 Hole, 285.75 mm (11.25 in), BC, Piloted Hub

RPM

Wheel: Front, 19.5x6.75, 8 Hole, 275 mm (10.8 in), BC, FN, Piloted Hub

RPQ

Wheel: Front, 22.5x8.25, 10 Hole, 285.75 mm (11.25 in), BC, Piloted Hub

RPR

Wheel: Rear, 22.5x8.25, 10 Hole, 285.75 mm (11.25 in), BC, Piloted Hub

RPW

Wheel: Rear, 19.5x6.75, 8 Hole, 275 mm (10.8 in), BC, FN, Piloted Hub

RQ2

Vehicle Application: Truck Service

R3B

Front Tire: Extra Strength Highway Tread

R3C

Front Tire: Premium Highway Tread

R3M

Front Tire: All Season Tread

R3N

Front Tire: Premium Highway Improved Steering Control Tread

R4A

Front Tire Brand: Goodyear

R4H

Front Tire Brand: General

R4L

Front Tire Brand: Michelin

R4N

Front Tire Brand: Bridgestone

R4R

Front Tire Brand: Select, Brand Plant

R6B

Control Sales Item No. 02

R6G

Control Sales Item No. 07

R6P

Control Sales Item No. 15

R9U

Control Sales Item No. 95

SGB

Form Advanced Broadcast Document

SMA

Spacer Pack: Right Spring Cab Leveling, +10 mm (+.374 in)

SMB

Spacer Pack: Right Spring Cab Leveling, +0 mm (+0 in)

SMC

Spacer Pack: Right Spring Cab Leveling, -10 mm (-.374 in)

SMD

Spacer Pack: Right Spring Cab Leveling, -20 mm (-.787 in)

SNF

Wheel: Front, Spare

SNR

Wheel: Rear, Spare

S3B

Tire Tread: Rear, Extra Strength Highway

S3C

Tire Tread: Rear, Premium Highway

S3D

Tire Tread: Rear, Highway Premium

S3E

Tire Tread: Rear, On/Off Road Highway

S3F

Tire Tread: Rear, Off Road Rolling

S3H

Tire Tread: Rear, Highway

S3J

Tire Tread: Rear, Highway Traction

S3K

Tire Tread: Rear, On/Off Road Rib

S3L

Tire Tread: Rear, Off Road Traction

S3M

Tire Tread: Rear, All Season

S4A

Rear Tire Brand: Goodyear

S4C

Rear Tire Brand: Dunlop

S4H

Rear Tire Brand: General

S4L

Rear Tire Brand: Michelin

S4N

Rear Tire Brand: Bridgestone

S4R

Rear Tire: Select, Brand Plant

S4T

Rear Tire Brand: Yokohama

TM0

Battery: 900 CCA, Dual

TNL

Battery: Twin, 12V (1110)

TNN

Battery: Twin, Delco® 1150, 12V

TRF

Tires: Front, Radial Identifier

TRG

Tire Selection, Customer Brand

TRH

Tire Selection, Customer Brand

TRR

Tires: Rear, Radial Identifier

TRZ

Equipment Air Shift Transmission

T62

Lighting: Daytime Running

UEA

Taillamp Delete

UM6

Radio: AM/FM Stereo, Seek & Scan, Auto Reverse Cassette, Clock, ETR

UM7

Radio: AM/FM Stereo, Seek & Scan, Clock, ETR

UZF

Alarm B/U Electrical, 97 Decibles

U08

Horn: Dual Electric

U86

Wiring Harness: Full Trailer, 7-Wire

VC0

Vehicle Label, Noise Control Information

VC5

Label, Shipping, Except US, or Japan

VC6

Label, Shipping, Hawaii, US Territories, and Puerto Rico

VH4

Mud Flaps

VPG

Cable: Trailer Jumper Cable , 7-Wire, 12-foot, Synflex Coiled

VPH

Vehicle Preparation Overseas Delivery

VWN

Hook: Tow, Rear, Bolt On

VXT

Vehicle Incomplete

V01

Radiator: Heavy Duty

V76

Hook: Tow

V78

Vehicle Statement: Delete

V98

Vehicle Statement: Delete

WDB

Control Engineering Edit

XRL

Tire: Front, 235/80R22.5/G, 14PR,BL TL Radial

XRN

Tire: Front, 295/75R22.5/G, 14PR, BL TL Radial

XSB

Tire: Front, 255/80R22.5/G, 14PR, BL TL Radial

XSH

Tire: Front, 275/80R24.5/G, 14PR, BL TL Radial

XTB

Tire: Front 255/70R22.5/H, 16PR, BL TL Radial

XTI

Tire: Front, 245/70R19.5/F, 12PR, BL TL Radial

XTN

Tire: Front, 225/70R19.5/F, BW, R/ST TL HWY

XTQ

Tire: Front, 245/75R22.5/G, BL TL Radial

XTU

Tire: Front, 265/75R22.5/G, BL TL Radial

XTX

Tire: Front, 8.00R19.5/F, 12 PR, BL TL Radial

XTY

Tire: Front, 245/70R19.5/G, 14PR, BL TL Radial

XWJ

Tire: Front, 10.00R22.5/F, 12PR, BL TL Radial

XWK

Tire: Front, 10.00R22.5/G, 14PR, BL TL Radial

XWL

Tire: Front, 11.00R22.5/G, 14PR, BL TL Radial

XWM

Tire: Front, 11.00R22.5/H, 16PR, BL TL Radial

X80

Plate GVW Rating

YA6

Sales Package Body Override, California

YE8

Vehicle Test, Engineering

YF5

Certification Emission, California

YF6

Sales Processing Option Geographic Control, California

YRL

Tire: Rear, 235/80R22.5/G, 14PR, BL TL Radial

YRN

Tire: Rear, 295/75R22.5/G, 14PR, BL TL Radial

YSB

Tire: Rear, 255/80R22.5/G, 14PR, BL TL Radial

YSH

Tire: Rear, 275/80R24.5/G, 14PR, BL TL Radial

YTB

Tire: Rear, 255/70R22.5/H, 16PR, BL TL Radial

YTI

Tire: Rear, 245/70R19.5/F, 12PR, BL TL Radial

YTN

Tire: Rear, 225/70R19.5/F, BW, R/ST ST TL HWY

YTQ

Tire: Rear, 245/75R22.5/G, BL TL Radial

YTU

Tire: Rear, 265/75R22.5/G, BL TL Radial

YTX

Tire: Rear, 8.00R19.5/F, 12PR, BL TL Radial

YTY

Tire: Rear, 245/70R19.5/G, 14PR, BL TL Radial

YU8

Wheel: Single, Polished Aluminum, One Side, Front

YWJ

Tire: Rear, 10.00R22.5/F, 12PR, BL TL Radial

YWK

Tire: Rear, 10.00R22.5/G, 14PR, BL TL Radial

YWL

Tire: Rear, 11.00R22.5/G, 14PR, BL TL Radial

YWM

Tire: Rear, 11.00R22.5/H, 16PR, BL TL Radial

YX6

Attachment Main Driveline One-Shaft System

YX7

Attachment Main Driveline Two-Shaft System

YX8

Attachment Main Driveline Three-Shaft System

YX9

Attachment Main Driveline Four-Shaft System

YY7

Paint Process Chassis

YY9

Paint Process Wheel

ZRL

Tire: Spare, 235/80R22.5/G, 14PR, BL TL Radial

ZRN

Tire: Spare, 295/75R22.5/G, 14PR, BL TL Radial

ZSB

Tire: Spare, 255/80R22.5/G, 14PR, BL TL Radial

ZSH

Tire: Spare 275/80R22.5/G, 14PR, BL TL Radial

ZTB

Tire: Spare, 255/70R22.5/H, 16PR BL TL Radial

ZTI

Tire: Spare, 245/70R19.5/F, 12PR BL TL Radial

ZTN

Tire: Spare, 225/70R19.5/F, BW, R/ST ST TL HWY

ZTQ

Tire: Spare, 245/75R22.5/F, BL TL Radial

ZTU

Tire: Spare, 265/75R22.5/G, BL TL Radial

ZTX

Tire: Spare, 8.00/19.5/F, 12PR, BL TL Radial

ZTY

Tire: Spare, 245/70R19.5/G, 14PR BL TL Radial

ZV1

Statement of Origin Manufacture

ZWJ

Tire: Spare, 10.00R22.5/F, 12PR, BL TT Radial

ZWK

Tire: Spare, 10.00R22.5/G, 14PR, BL TT Radial

ZWL

Tire: Spare, 11.00R22.5/G, 14PR, BL TT Radial

ZWM

Tire: Spare, 11.00R22.5/H, 16PR, BL TL Radial

ZY1

Color Combination: Solid

ZY2

Color Combination: Two-Tone

Z49

Export Canadian Modified Mandatory Base Equipment

Z89

Conversion Name Plate ISUZU

001

3.70 Ratio Code

002

4.11 Ratio Code

003

4.33 Ratio Code

005

4.56 Ratio Code

006

4.63 Ratio Code

008

4.88 Ratio Code

009

5.29 Ratio Code

010

5.43 Ratio Code

011

5.57 Ratio Code

012

5.83 Ratio Code

014

6.14 Ratio Code

015

6.17 Ratio Code

016

5.25 Ratio Code

017

6.50 Ratio Code

019

6.67 Ratio Code

020

5.63 Ratio Code

022

7.17 Ratio Code

038

6.57 Ratio Code

039

3.55 Ratio Code

057

3.36 Ratio Code

066

4.10 Ratio Code

069

3.90 Ratio Code

070

5.38 Ratio Code

092

4.30 Ratio Code

16L

Primary Color: Exterior, White Kodiak, Frost

16U

Color: Primary Exterior, White Kodiak, Frost

23L

Secondary Color: Exterior, Ocean Blue

23U

Primary Color: Exterior, Ocean Blue

40P

Wheel Color: White

41P

Wheel Color: Black

46L

Secondary Color: Exterior, Dark Green

46U

Primary Color: Exterior, Dark Green

61L

Secondary Color: Exterior, Tan

61U

Primary Color: Exterior, Tan

72U

Primary Color: Exterior, Standard Red

86L

Secondary Color: Exterior, Wheatland Yellow

86U

Primary Color: Exterior, Wheatland Yellow

88L

Secondary Color: Exterior, Tangier Orange

88U

Primary Color: Exterior, Tangier Orange