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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 773 (HVAC SYSTEM)TECHNICAL DATAMANUAL SYSTEMSERVICE SPECIFICATIONS
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Service Specifications

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Service Specifications
WARNING: This page is about a different car, the 2004 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
A/C SYSTEM SPECIFICATIONS

Application Specification
Compressor Type ATMOS GU10
Compressor Magnetic Clutch Air Gap 0.014-0.029" (0.35-0.75 mm)
Compressor Oil Capacity 5.24 Ozs.
Magnetic Clutch Gap 0.012-0.019" (0.30-0.50 mm)
Pressure Relief Valve (1)
Refrigerant (R-134a) Capacity 16.8-18.5 ozs.
Refrigerant Pressure Switch
On
Low Side 25.53-36.31 psi (176-250 kPa)
High Side 57-114 psi (393-786 kPa)
Off
Low Side 25.53-31.31 psi (176-216 kPa)
High Side 427-463 psi (2944-3192 kPa)
System Oil Capacity (1)
System Operating Pressures (2)
High Side 180-264 psi (1241-1820 kPa)
Low Side 12-23 psi (83-159 kPa)
(1) Information not available from manufacturer.
(2) Specification is with ambient temperature at 86°F (30°C) and engine speed at 1500 RPM. Specifications are approximate.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.