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1985 GMC P2500
-- Select Engine --
Engine Description RPO Code
The drop down menu includes engine codes with descriptions and engine sizes. Please use the following tutorial to locate the actual engine size of your vehicle; it could help you make the correct selection.
  • 6 Cyl 4.3L EFI LB4
  • 6 Cyl 4.8L L25
  • 8 Cyl 5.7L LS9
  • 8 Cyl 5.7L LT9
  • 8 Cyl 6.2L Diesel LL4
  • 8 Cyl 7.4L 4BBL LE8
-- Select Transmission --
Transmission Description RPO Code
  • 3-Speed Automatic Transmission, THM400-475/3L80 M40
  • 4-Speed Manual Transmission (Muncie) M20
-- Select Model Code --
Model Code Description RPO Code
A GM Model Code can be found on both the Service Tag and Service Parts Identification Tag.
  • Chassis 3/4 Ton Delivery TP20842
  • Chassis 3/4 Ton Delivery TP21042
  • Chassis 1 Ton Delivery TP30842
  • Chassis 1 Ton Delivery TP31042
  • Chassis 1 Ton Delivery TP31442
  • Chassis 1 Ton Delivery TP31842
  • Chassis 1 Ton Motor Home TP30832
  • Chassis 1 Ton Motor Home TP31132
  • Chassis 1 Ton Motor Home TP31432
  • Chassis 1 Ton Motor Home TP31832
  • Chassis 1 Ton Motor Home TP32032
Parts Question Guide

1985 GMC P2500 Parts

Parts and Categories

[-] [+]Body Mounting, Air Conditioning, Audio/Entertainment

[-] [+]Cab And Body Parts, Wipers, Mirrors, Doors, Trim, Seat Belts

[-] [+]Frames, Springs, Shocks, Bumpers

[-] [+]Front End Sheet Metal, Heater, Vehicle Maintenance

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