HomeHVAC > A/C Clutch and CompressorUniversal Air CO4911AC A/C Compressor
Part #: CO4911AC

Universal Air CO4911AC A/C Compressor

UAC TRSA12 Compressor Assembly
50 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
UAC TRSA12 Compressor Assembly
Fitment: Chevrolet, GMC, Saab, Buick, and Isuzu, Trailblazer, Envoy, 9-7x, Rainier, SSR, Trailblazer EXT, Envoy XL, Ascender, and Envoy XUV
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Reliable A/C Compressor for Buick, Chevrolet, GMC, Isuzu, and Saab

The Universal Air UAC TRSA12 Compressor Assembly (Part Number CO4911AC) is designed to restore efficient air conditioning performance in select Buick, Chevrolet, GMC, Isuzu, and Saab vehicles. This A/C compressor is engineered to meet the specific requirements of models such as the Trailblazer, Envoy, and 9-7x, ensuring proper fit and function.

  • Direct replacement A/C compressor assembly for select GM and Isuzu models
  • Compatible with Buick 9-7x, Chevrolet Trailblazer, Trailblazer EXT, SSR, GMC Envoy, Envoy XL, Envoy XUV, Rainier, Isuzu Ascender, and Saab 9-7x
  • Part Number CO4911AC for precise identification and ordering
  • Designed to work with factory A/C clutch and system components
  • Manufactured by Universal Air under the UAC TRSA12 Compressor Assembly product line

About the UAC TRSA12 Compressor Assembly Product Line

The UAC TRSA12 Compressor Assembly product line by Universal Air focuses on providing reliable and compatible A/C compressor solutions for a range of mid-size SUVs and trucks. This line is tailored to meet the OEM specifications for vehicles such as the Chevrolet Trailblazer and GMC Envoy, ensuring proper system pressure and cooling performance. The CO4911AC part is a key offering within this line, designed to maintain system integrity and restore air conditioning functionality.

Product Description and Compatibility

This A/C compressor assembly is engineered to fit a variety of vehicles including Buick 9-7x, Chevrolet Trailblazer and Trailblazer EXT, GMC Envoy series, Isuzu Ascender, and Saab 9-7x. The CO4911AC compressor is built to match the original equipment specifications, providing reliable operation within the vehicle’s HVAC system. It is compatible with factory-installed A/C clutches and integrates seamlessly with existing system components to ensure optimal cooling performance.

Common Applications and Issues Addressed

  • Restores cooling efficiency in Buick 9-7x and Saab 9-7x A/C systems
  • Resolves compressor failure symptoms in Chevrolet Trailblazer and Trailblazer EXT
  • Fixes intermittent or no cooling issues in GMC Envoy, Envoy XL, and Envoy XUV
  • Addresses compressor noise or clutch engagement problems in Isuzu Ascender
  • Replaces worn or damaged compressors in Chevrolet SSR and GMC Rainier

Installation Notes and Tips

  • Ensure system evacuation and recharge with correct refrigerant after installation
  • Verify clutch compatibility and inspect related components for wear
  • Follow vehicle-specific service manual procedures for compressor replacement
  • Check for leaks and proper belt tension post-installation

Quality Assurance and Warranty

The Universal Air UAC TRSA12 Compressor Assembly (CO4911AC) is manufactured to meet industry standards for durability and performance. While specific warranty details may vary, Universal Air products typically include a limited warranty against defects in materials and workmanship. It is recommended to confirm warranty terms with the parts provider prior to installation.

This part fits 50 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersPositionNotes
2009ChevroletTrailblazerSS6.0LV8N/ARequires Use of OEM Connector; UAC TRSA12 Compressor Assembly
2009ChevroletTrailblazerLT5.3LV8N/ARequires Use of OEM Connector; UAC TRSA12 Compressor Assembly
2009GMCEnvoyDenali5.3LV8N/AUAC TRSA12 Compressor Assembly
2009Saab9-7xAero6.0LV8N/AUAC TRSA12 Compressor Assembly
2009Saab9-7x5.3i5.3LV8N/AUAC TRSA12 Compressor Assembly
2008ChevroletTrailblazerLT5.3LV8N/ARequires Use of OEM Connector; UAC TRSA12 Compressor Assembly
2008ChevroletTrailblazerSS6.0LV8N/ARequires Use of OEM Connector; UAC TRSA12 Compressor Assembly
2008ChevroletTrailblazerBase5.3LV8N/ARequires Use of OEM Connector; UAC TRSA12 Compressor Assembly
2008GMCEnvoyDenali5.3LV8N/AUAC TRSA12 Compressor Assembly
2008Saab9-7x5.3i5.3LV8N/AUAC TRSA12 Compressor Assembly
2008Saab9-7xAero6.0LV8N/AUAC TRSA12 Compressor Assembly
2007BuickRainier5.3LV8N/AUAC TRSA12 Compressor Assembly
2007ChevroletTrailblazerLS5.3LV8N/ARequires Use of OEM Connector; UAC TRSA12 Compressor Assembly
2007ChevroletTrailblazerLT5.3LV8N/ARequires Use of OEM Connector; UAC TRSA12 Compressor Assembly
2007ChevroletTrailblazerSS6.0LV8N/ARequires Use of OEM Connector; UAC TRSA12 Compressor Assembly
2007GMCEnvoyDenali5.3LV8N/AUAC TRSA12 Compressor Assembly
2007Saab9-7x5.3i5.3LV8N/AUAC TRSA12 Compressor Assembly
2006BuickRainier5.3LV8N/AUAC TRSA12 Compressor Assembly
2006ChevroletSSRN/AUAC TRSA12 Compressor Assembly
2006ChevroletTrailblazerLS5.3LV8N/ARequires Use of OEM Connector; UAC TRSA12 Compressor Assembly
2006ChevroletTrailblazerSS6.0LV8N/ARequires Use of OEM Connector; UAC TRSA12 Compressor Assembly
2006ChevroletTrailblazerLT5.3LV8N/ARequires Use of OEM Connector; UAC TRSA12 Compressor Assembly
2006ChevroletTrailblazer EXT5.3LV8N/AUAC TRSA12 Compressor Assembly
2006GMCEnvoyDenali5.3LV8N/AUAC TRSA12 Compressor Assembly
2006GMCEnvoy XLDenali5.3LV8N/AUAC TRSA12 Compressor Assembly
2006IsuzuAscenderLS5.3LV8N/AUAC TRSA12 Compressor Assembly
2006Saab9-7x5.3i5.3LV8N/AUAC TRSA12 Compressor Assembly
2005BuickRainier5.3LV8N/AUAC TRSA12 Compressor Assembly
2005ChevroletSSRN/AUAC TRSA12 Compressor Assembly
2005ChevroletTrailblazer EXT5.3LV8N/AUAC TRSA12 Compressor Assembly
2005GMCEnvoyDenali5.3LV8N/AUAC TRSA12 Compressor Assembly
2005GMCEnvoy XLSLT5.3LV8N/AUAC TRSA12 Compressor Assembly
2005GMCEnvoy XLDenali5.3LV8N/AUAC TRSA12 Compressor Assembly
2005GMCEnvoy XLSLE5.3LV8N/AUAC TRSA12 Compressor Assembly
2005GMCEnvoy XUV5.3LV8N/AUAC TRSA12 Compressor Assembly
2005IsuzuAscenderS5.3LV8N/AUAC TRSA12 Compressor Assembly
2005IsuzuAscenderLimited5.3LV8N/AUAC TRSA12 Compressor Assembly
2005IsuzuAscenderLS5.3LV8N/AUAC TRSA12 Compressor Assembly
2005Saab9-7xArc5.3LV8N/AUAC TRSA12 Compressor Assembly
2004BuickRainier5.3LV8N/AUAC TRSA12 Compressor Assembly
2004ChevroletSSRN/AUAC TRSA12 Compressor Assembly
2004ChevroletTrailblazer EXT5.3LV8N/AUAC TRSA12 Compressor Assembly
2004GMCEnvoy XL5.3LV8N/AUAC TRSA12 Compressor Assembly
2004GMCEnvoy XUV5.3LV8N/AUAC TRSA12 Compressor Assembly
2004IsuzuAscenderLS5.3LV8N/AUAC TRSA12 Compressor Assembly
2004IsuzuAscenderLimited5.3LV8N/AUAC TRSA12 Compressor Assembly
2003ChevroletSSRN/AUAC TRSA12 Compressor Assembly
2003ChevroletTrailblazer EXT5.3LV8N/AUAC TRSA12 Compressor Assembly
2003GMCEnvoy XL5.3LV8N/AUAC TRSA12 Compressor Assembly
2003IsuzuAscender5.3LV8N/AUAC TRSA12 Compressor Assembly

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.