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2003 Chevrolet Silverado 1500 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 MFI, 90 DEG LU3
  • 8 Cyl 4.8L MFI LR4
  • 8 Cyl 5.3L Flexible Fuel, MFI L59
  • 8 Cyl 5.3L MFI LM7
  • 8 Cyl 6.0L MFI LQ4
  • 8 Cyl 6.0L MFI, Iron, High Output LQ9
  • 8 Cyl 6.6L Diesel Turbo, Direct Injection, HO,ISUZU DURAMAX LB7
  • 8 Cyl 8.1L L18
-- Select Transmission --
Transmission Description RPO Code
  • 4-Speed Automatic Transmission, 4L60-E, Electronic M30
  • 4-Speed Automatic Transmission, HMD, 4L60-E/4L65-E, Heavy Duty M32
  • 4-Speed Automatic Transmission, HMD, 4L80-E, Heavy Duty MN8
  • 4-Speed Automatic Transmission, THM-R2(4L80-E) MT1
  • 5-Speed Automatic Transmission, ALLISON, LCT 1000, Overdrive M74
  • 5-Speed Manual Transmission (GETRAG) MG5
  • 5-Speed Manual Transmission, NVG, Overdrive MW3
  • 6-Speed Manual Transmission, ZF, Overdrive ML6
-- 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.
  • Avalanche 1/2 Ton CK15936
  • Avalanche 3/4 Ton CK25936
  • Silverado 1500 Crew Cab Long Box CK15743
  • Silverado 1500 Extended Cab Long Box CK15953
  • Silverado 1500 Extended Cab Standard Box CK15753
  • Silverado 1500 Regular Cab Long Box CK15903
  • Silverado 1500 Regular Cab Standard Box CK15703
  • Silverado 2500 Crew Cab Long Box CK25943
  • Silverado 2500 Crew Cab Standard Box CK25743
  • Silverado 2500 Extended Cab Long Box CK25953
  • Silverado 2500 Extended Cab Standard Box CK25753
  • Silverado 2500 Regular Cab CK25903
  • Silverado 3500 Crew Cab CK35943
  • Silverado 3500 Extended Cab CK35953
  • Silverado 3500 Regular Cab CK35903
  • Suburban 1/2 Ton CK15906
  • Tahoe 4 Door 1/2 Ton CK15706
Parts Question Guide

Parts found for 2003 Chevrolet Silverado 1500 HD 4WD > Fuel System, Exhaust, Emission System > Fuel Pump

Part No. Part Description Retail
BOLT, Fuel Injector Pump


Require Quantity:
BOLT, Fuel Pump


Require Quantity:
GASKET, Fuel Injector Pump


GEAR, Fuel Injector Pump


NUT, Fuel Injector Pump


PLATE, Fuel Pump


Require Quantity:
PUMP, Fuel Injector Pump


REGULATOR KIT, Fuel Injection


SEAL, Fuel Pump Mounting


SPACER, Fuel Pump


Require Quantity:
WASHER, Fuel Injector Pump



Although General Motors no longer manufactures this part, we may still have stock or the ability to special order it.

To verify availability, please contact us. We will respond promptly.

There are multiple parts that fit your vehicle, select the one that best matches your needs, or select vehicle options to filter result.
Genuine GM Parts, the Right Choice offers the lowest prices for genuine 2003 Chevrolet Silverado 1500 HD 4WD parts. Parts like Fuel Pump are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.6L Diesel, 8 Cyl 8.1L. Model Code: 1/2 TON, 1500 CREW CAB LONG BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3/4 TON, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, 4 DOOR 1/2 TON.
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This part is a packaged part and contains multiple quantities of the same item. In an effort to simplify packaging GM will sometimes include multiple parts in a package.