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2015 GMC Sierra 2500 HD 4WD
-- 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 GEN 5, SIDI, VVT, OHV, E85 MAX, ALUM LV3
  • 8 Cyl 5.3L L83
  • 8 Cyl 6.0L Flexible Fuel, SFI Iron L96
  • 8 Cyl 6.0L LPG/CNG, SFI, GEN 1 LC8
  • 8 Cyl 6.2L L86
  • 8 Cyl 6.6L Diesel Dual Turbo, DI, DURAMAX LML
-- Select Transmission --
Transmission Description RPO Code
  • 6-Speed Automatic Transmission, ALLISON, LCT 1000, Overdrive MW7
  • 6-Speed Automatic Transmission, HMD, 6L-80 MYC
  • 6-Speed Automatic Transmission, HMD, 6L-90 MYD
  • 8-Speed Automatic Transmission M5U
-- 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.
  • Sierra 1500 Crew Cab Standard Box TK15743
  • Sierra 1500 Double Cab Standard Box TK15753
  • Sierra 1500 Regular Cab Long Box TK15903
  • Sierra 1500 Regular Cab Standard Box TK15703
  • Sierra 2500 Crew Cab Standard Box TK25743
  • Sierra 2500 Regular Cab Only TK25903
  • Sierra 3500 Crew Cab Long Box TK35943
  • Sierra 3500 Crew Cab Only TK36043
  • Sierra 3500 Crew Cab Standard Box TK35743
  • Sierra 3500 Double Cab Long Box TK35953
  • Sierra 3500 Regular Cab Only TK35903
  • Sierra 3500 Regular Cab Only TK36003
  • Sierra 3500 Regular Cab Only TK36403
  • Sierra Crew Cab 1/2 Ton TK15543
  • Sierra Crew Cab 2500 Long Box TK25943
  • Sierra Double Cab 2500 Long Box TK25953
  • Sierra Double Cab 2500 Standard Box TK25753
  • Yukon XL/Escalade ESV 1500 4 Door TK15906
  • Yukon/Escalade 1500 4 Door SUV TK15706
Parts Question Guide

2015 GMC Sierra 2500 HD 4WD Parts

Parts and Categories

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

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