Global Parts 4811955 A/C Refrigerant Suction Hose
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Global Parts

Global Parts 4811955 A/C Refrigerant Suction Hose

Brand Global Parts 4811955
Fits Chevrolet and GMC · 4 vehicles

A/C refrigerant suction hose for low-side refrigerant flow.

Connects the compressor to the evaporator.

Cross-references Dorman - HELP 56427, UAC HA11388C and 15-32989 for the same application. See all 13.

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2003 Silverado and Sierra A/C Suction Hose

This A/C refrigerant suction hose from Global Parts is a low-side hose that routes refrigerant from the compressor to the evaporator. It is built for 2003 Chevrolet Silverado 2500 HD, Silverado 3500, GMC Sierra 2500 HD, and Sierra 3500 applications with the 1st design configuration.

  • Brand: Global Parts
  • Part number: 4811955
  • A/C refrigerant suction hose for the low-side circuit
  • Direct fitment for select 2003 Chevrolet Silverado and GMC Sierra heavy-duty trucks
  • Cross-reference: UAC HA11388C

Product Details

Global Parts 4811955 is an HVAC hose assembly used on the suction side of the air conditioning system. In the low-side circuit, the hose carries refrigerant between the compressor and evaporator, helping maintain proper refrigerant flow in the system. This part is listed for 2003 Chevrolet Silverado 2500 HD, 2003 Chevrolet Silverado 3500, 2003 GMC Sierra 2500 HD, and 2003 GMC Sierra 3500, all noted as 1st design. If you are replacing a worn or leaking hose on a Silverado or Sierra, 4811955 provides the correct application match for these trucks.

Common Replacement Reasons

  • Refrigerant loss from a cracked or deteriorated hose
  • Oil residue or visible seepage at the suction line
  • Weak A/C performance caused by low system charge
  • Noise or vibration from a damaged hose assembly
  • Service replacement during compressor or evaporator work

Installation Notes

Verify the vehicle’s 1st design configuration before ordering. Inspect the compressor, evaporator connections, and sealing surfaces for wear or contamination before installation. After replacement, evacuate and recharge the system according to factory service procedures, then check for leaks and proper cooling performance. This part cross-references UAC HA11388C for the same application.

Quality Assurance

Global Parts supplies HVAC replacement components for service repair applications. Part number 4811955 is cataloged for the specified heavy-duty Chevrolet and GMC trucks to support accurate fitment selection.

Related reading

This part fits 4 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2003ChevroletSilverado 2500 HD6.6LV8N/A1st Design
2003ChevroletSilverado 35006.6LV8N/A1st Design
2003GMCSierra 2500 HD6.6LV8N/A1st Design
2003GMCSierra 35006.6LV8N/A1st Design
Directly replaces or cross-references 13 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Dorman - HELP — 56427UAC — HA11388C15-3298940864878508515329891035831115187287A4-100204AHA70-4635H-6464H6464HA11388