GM Service Manual Online
For 1990-2009 cars only

The production/process codes provide the description of the Regular Production Options (RPOs) used on the P-Chassis. The RPO list is printed on the Service Parts Identification Label. The following is a list of the RPO abbreviations and the description of each:

P-Chassis RPO Table

RPO

Description

CD4

Wiper System: Windshield, Pulse

C7T

GVW Rating: 22,500

C7V

GVW Rating: 21,000

DET

Plant Code: Detroit, MI.

EJ6

Vehicle Application Shipped Loose Parts

ENV

HVAC Provisions: Engine Dress, Compressor and Condenser

EN2

HVAC Provisions: Delete

E79

Door RR, 74 Inch Strap Hinges

E82

Kit 190 Wheel Base Modification

E83

Kit 228 Wheel Base Modification

FE9

Certification, Emissions, Federal

F10

Suspension System: I-Beam Construction (7,500 lb capacity)

GQ7

Axle, Rear (14,500 lb capacity)

HPR

Headlamps: Dual, Rectangular

KW2

Generator: 124 Amp

K34

Cruise Control: Electronic

L21

Engine: 7.4 Liter V8, SFI

MT9

Transmission: Automatic Allison AT542N Four-Speed

NG1

Emission System: Geographically Restricted

NJ9

Fuel Tank: 80 gal. LH or RH Fill

RHQ

Harness Assembly: Tail and Stop Lamp

R05

Wheel: Dual, Conversion Rear

VG8

Vehicle Label

VP6

Noise Control

VXT

Vehicle Incomplete

V14

Cooler, Oil, Transmission, Auxiliary

V73

Vehicle Statement US/Canada

V98

Factory Delivery Processing

XRL

Tire: Front, LT235/80R 22.5G 14PR BL Radial TL

XTY

Tire: Front, LT245/70R 19.5G 14PR BL Radial

X88

Conversion: Name Plate, Chevrolet

YRL

Tire: Rear, LT 235/80R 22.5G 14 PR BL Radial TL

YTY

Tire: Rear, LT 245/70R 19.5G 14 PR BL Radial TL

ZRL

Tire: Rear, LT 235/80R 22.5G 14 PR BL Radial TL

ZTN

Tire: Rear, LT 225/70R 19.5F 14 PR BL Radial TL

ZTY

Tire: Rear, LT 245/70R 19.5G 14 PR BL Radial TL

ZW9

Body Equipment: Basebody or Chassis

Z49

Export Canadian Modification: Mandatory Base Equipment

84P

Wheel Color: Gray