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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1550 (Heating, Ventilation, And Air Conditioning) >> Repair Instructions >> Expansion (Orifice) Tube Replacement

Expansion (Orifice) Tube Replacement

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Expansion (Orifice) Tube
GM1772203Courtesy of GENERAL MOTORS CORP.
Callout Component Name

Preliminary Procedure

  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging (Non-HP2)  or Refrigerant Recovery and Recharging (HP2) .
  2. Remove the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .
  3. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
1 Orifice Tube Fitting
CAUTION: Refer to Fastener Caution .

Tip:  Loosen orifice tub fitting and separate the pressure line to access the orifice.

Tighten:  9 N.m (80 lb in)
2 O-ring Seal
Tip:  Remove and discard O-ring. Refer to Air Conditioning O-Ring Seal Replacement .
3 Orifice Tube Assembly
Tip:  Use J 26549-E  to remove orifice tube. See Special Tools .
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