Universal Air EX529458C A/C Expansion Valve - Rear
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Universal Air
 Block Expansion Valve

Universal Air EX529458C A/C Expansion Valve - Rear

Brand Universal Air EX529458C
Position Rear
Product line Block Expansion Valve
Fits Cadillac, Chevrolet, GMC, Pontiac, Buick, and Saturn · 156 vehicles

Block expansion valve. Regulates refrigerant flow in the A/C system.

A/C expansion valve. Controls refrigerant metering for efficient cooling.

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Universal Air EX529458C Block Expansion Valve

The Universal Air EX529458C is a block-style A/C expansion valve for select GM and Cadillac HVAC systems. It is used in rear air conditioning applications on several full-size SUVs and also fits a range of Chevrolet, Pontiac, Buick, Saturn, and GMC models listed below.

Key Features

  • Block expansion valve for automotive A/C flow control
  • Direct-fit application coverage for select rear HVAC systems
  • Fits 2007-2014 Cadillac Escalade ESV, rear
  • Fits 2010-2013 Cadillac Escalade EXT, rear
  • Fits 2007-2014 Chevrolet Suburban 1500, N/A
  • Fits 2007-2013 Chevrolet Suburban 2500, rear
  • Fits 2010-2014 GMC Yukon XL 1500, rear
  • Fits 2010-2013 GMC Yukon XL 2500, rear
  • Part number EX529458C for catalog and service matching

Detailed Description

Universal Air Block Expansion Valve EX529458C is an A/C flow restrictor used to meter refrigerant into the evaporator circuit. This style of valve is commonly used in rear HVAC systems and other factory air conditioning layouts where precise refrigerant control is required. It is listed for applications including the Cadillac Escalade ESV, Chevrolet Suburban, GMC Yukon XL, Chevrolet Malibu, Chevrolet Impala, Chevrolet HHR, Chevrolet Cobalt, Pontiac G5, Pontiac G6, Buick Allure, Buick LaCrosse, Saturn Aura, Pontiac Grand Prix, Chevrolet Monte Carlo, Saturn Ion, and Pontiac Pursuit. Use EX529458C when servicing the specific block expansion valve application shown in the fitment data.

What It Is Used For

  • Loss of cooling performance from a restricted or worn expansion valve
  • Uneven refrigerant metering in the A/C system
  • Rear HVAC cooling complaints on applicable Cadillac Escalade ESV, Chevrolet Suburban, and GMC Yukon XL models
  • Service replacement for a leaking or sticking block expansion valve
  • Restoring proper evaporator feed control in select GM A/C systems

Installation Notes and Tips

Verify the vehicle year, make, model, and HVAC position before ordering. This part number EX529458C is listed for both rear and N/A positions depending on the application, so match the original valve style and location exactly. Recover refrigerant and follow proper A/C service procedures before removing the existing valve. Inspect related seals, lines, and the evaporator connection points during service.

Quality Assurance

Universal Air EX529458C is cataloged as a block expansion valve for the listed GM and Cadillac applications. Confirm fitment against the vehicle’s original A/C configuration before installation.

Related reading

This part fits 156 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2014CadillacEscalade ESV————RearBlock Expansion Valve
2014ChevroletSuburban 1500————N/ABlock Expansion Valve
2014GMCYukon XL 1500————RearBlock Expansion Valve
2013CadillacEscalade ESV————RearBlock Expansion Valve
2013CadillacEscalade EXT————RearBlock Expansion Valve
2013ChevroletSuburban 1500LT5.3LV8GASN/ABlock Expansion Valve
2013ChevroletSuburban 1500LTZ5.3LV8FLEXN/ABlock Expansion Valve
2013ChevroletSuburban 1500LS5.3LV8FLEXN/ABlock Expansion Valve
2013ChevroletSuburban 1500LT6.0LV8GASN/ABlock Expansion Valve
2013ChevroletSuburban 1500LT5.3LV8FLEXN/ABlock Expansion Valve
2013ChevroletSuburban 2500LT———RearBlock Expansion Valve
2013ChevroletSuburban 2500LS———RearBlock Expansion Valve
2013GMCYukon XL 1500————RearBlock Expansion Valve
2013GMCYukon XL 2500————RearBlock Expansion Valve
2012CadillacEscalade ESVBase———RearBlock Expansion Valve
2012CadillacEscalade ESVPlatinum———RearBlock Expansion Valve
2012CadillacEscalade ESVPremium———RearBlock Expansion Valve
2012CadillacEscalade ESVSpecial Edition———RearBlock Expansion Valve
2012CadillacEscalade ESVLuxury———RearBlock Expansion Valve
2012CadillacEscalade EXT————RearBlock Expansion Valve
2012ChevroletMalibuLS2.4LL4FLEXN/ABlock Expansion Valve
2012ChevroletMalibuLS2.4LL4GASN/ABlock Expansion Valve
2012ChevroletMalibuLT2.4LL4FLEXN/ABlock Expansion Valve
2012ChevroletMalibuLT3.6LV6GASN/ABlock Expansion Valve
2012ChevroletMalibuLTZ2.4LL4FLEXN/ABlock Expansion Valve
2012ChevroletMalibuLTZ2.4LL4GASN/ABlock Expansion Valve
2012ChevroletMalibuLT2.4LL4GASN/ABlock Expansion Valve
2012ChevroletMalibuLTZ3.6LV6GASN/ABlock Expansion Valve
2012ChevroletSuburban 1500Base6.0LV8GASN/ABlock Expansion Valve
2012ChevroletSuburban 1500LT5.3LV8FLEXN/ABlock Expansion Valve
2012ChevroletSuburban 1500LTZ5.3LV8FLEXN/ABlock Expansion Valve
2012ChevroletSuburban 1500LS5.3LV8FLEXN/ABlock Expansion Valve
2012ChevroletSuburban 2500LS6.0LV8—RearBlock Expansion Valve
2012ChevroletSuburban 2500LT6.0LV8—RearBlock Expansion Valve
2012GMCYukon XL 1500————RearBlock Expansion Valve
2012GMCYukon XL 2500————RearBlock Expansion Valve
2011CadillacEscalade ESV————RearBlock Expansion Valve
2011CadillacEscalade EXT————RearBlock Expansion Valve
2011ChevroletHHR————N/ABlock Expansion Valve
2011ChevroletImpala————N/ABlock Expansion Valve
2011ChevroletMalibuLS2.4LL4GASN/ABlock Expansion Valve
2011ChevroletMalibuLS2.4LL4FLEXN/ABlock Expansion Valve
2011ChevroletMalibuLT2.4LL4GASN/ABlock Expansion Valve
2011ChevroletMalibuLT2.4LL4FLEXN/ABlock Expansion Valve
2011ChevroletMalibuLT3.6LV6GASN/ABlock Expansion Valve
2011ChevroletMalibuLTZ2.4LL4FLEXN/ABlock Expansion Valve
2011ChevroletMalibuLTZ2.4LL4GASN/ABlock Expansion Valve
2011ChevroletMalibuLTZ3.6LV6GASN/ABlock Expansion Valve
2011ChevroletSuburban 1500Base6.0LV8GASN/ABlock Expansion Valve
2011ChevroletSuburban 1500LS5.3LV8FLEXN/ABlock Expansion Valve
2011ChevroletSuburban 1500LT5.3LV8FLEXN/ABlock Expansion Valve
2011ChevroletSuburban 1500LTZ5.3LV8FLEXN/ABlock Expansion Valve
2011ChevroletSuburban 2500LS6.0LV8—RearBlock Expansion Valve
2011ChevroletSuburban 2500LT6.0LV8—RearBlock Expansion Valve
2011ChevroletTahoeHybrid6.0LV8ELECTRIC/FLEXRearBlock Expansion Valve
2011GMCYukon XL 1500————RearBlock Expansion Valve
2011GMCYukon XL 2500————RearBlock Expansion Valve
2010CadillacEscalade ESV————RearBlock Expansion Valve
2010CadillacEscalade EXT————RearBlock Expansion Valve
2010ChevroletCobalt————N/ABlock Expansion Valve
2010ChevroletHHR————N/ABlock Expansion Valve
2010ChevroletImpala————N/ABlock Expansion Valve
2010ChevroletMalibu————N/ABlock Expansion Valve
2010ChevroletSuburban 1500————N/ABlock Expansion Valve
2010ChevroletSuburban 2500————RearBlock Expansion Valve
2010GMCYukon XL 1500————RearBlock Expansion Valve
2010GMCYukon XL 2500————RearBlock Expansion Valve
2010PontiacG5————N/ABlock Expansion Valve
2010PontiacG6————N/ABlock Expansion Valve
2009BuickAllure————N/ABlock Expansion Valve
2009BuickLaCrosse————N/ABlock Expansion Valve
2009CadillacEscalade ESV————RearBlock Expansion Valve
2009ChevroletCobalt————N/ABlock Expansion Valve
2009ChevroletHHR————N/ABlock Expansion Valve
2009ChevroletImpala————N/ABlock Expansion Valve
2009ChevroletMalibu————N/ABlock Expansion Valve
2009ChevroletSuburban 1500————N/ABlock Expansion Valve
2009ChevroletSuburban 2500————RearBlock Expansion Valve
2009GMCYukon XL 2500————N/ABlock Expansion Valve
2009PontiacG5————N/ABlock Expansion Valve
2009PontiacG6GT3.9LV6GASN/ABlock Expansion Valve
2009PontiacG6SE2.4LL4GASN/ABlock Expansion Valve
2009PontiacG6SE3.5LV6GASN/ABlock Expansion Valve
2009PontiacG6Base2.4LL4GASN/ABlock Expansion Valve
2009PontiacG6Base3.5LV6GASN/ABlock Expansion Valve
2009PontiacG6GT3.5LV6GASN/ABlock Expansion Valve
2009PontiacG6SE3.5LV6FLEXN/ABlock Expansion Valve
2009PontiacG6GXP3.6LV6GASN/ABlock Expansion Valve
2009PontiacG6GT3.5LV6FLEXN/ABlock Expansion Valve
2009PontiacG6Base3.5LV6FLEXN/ABlock Expansion Valve
2009SaturnAura————N/ABlock Expansion Valve
2008BuickAllure————N/ABlock Expansion Valve
2008BuickLaCrosse————N/ABlock Expansion Valve
2008CadillacEscalade ESV————RearBlock Expansion Valve
2008ChevroletCobalt————N/ABlock Expansion Valve
2008ChevroletHHR————N/ABlock Expansion Valve
2008ChevroletImpala————N/ABlock Expansion Valve
2008ChevroletMalibu————N/ABlock Expansion Valve
2008ChevroletSuburban 1500————N/ABlock Expansion Valve
2008ChevroletSuburban 2500————RearBlock Expansion Valve
2008GMCYukon XL 1500————N/ABlock Expansion Valve
2008GMCYukon XL 2500————N/ABlock Expansion Valve
2008PontiacG5————N/ABlock Expansion Valve
2008PontiacG6GT3.9LV6—N/ABlock Expansion Valve
2008PontiacG6Base2.4LL4—N/ABlock Expansion Valve
2008PontiacG6Base3.5LV6—N/ABlock Expansion Valve
2008PontiacG6GT3.5LV6—N/ABlock Expansion Valve
2008PontiacG6GXP3.6LV6—N/ABlock Expansion Valve
2008PontiacG6SE2.4LL4—N/ABlock Expansion Valve
2008PontiacG6SE3.5LV6—N/ABlock Expansion Valve
2008PontiacGrand Prix————N/ABlock Expansion Valve
2008SaturnAura————N/ABlock Expansion Valve
2007BuickAllure————N/ABlock Expansion Valve
2007BuickLaCrosse————N/ABlock Expansion Valve
2007CadillacEscalade ESV————RearBlock Expansion Valve
2007ChevroletCobalt————N/ABlock Expansion Valve
2007ChevroletHHR————N/ABlock Expansion Valve
2007ChevroletImpala————N/ABlock Expansion Valve
2007ChevroletMalibu————N/ABlock Expansion Valve
2007ChevroletMonte Carlo————N/ABlock Expansion Valve
2007ChevroletSuburban 1500————N/ABlock Expansion Valve
2007ChevroletSuburban 2500————RearBlock Expansion Valve
2007GMCYukon XL 1500————N/ABlock Expansion Valve
2007GMCYukon XL 2500————N/ABlock Expansion Valve
2007PontiacG5————N/ABlock Expansion Valve
2007PontiacG6————N/ABlock Expansion Valve
2007PontiacGrand Prix————N/ABlock Expansion Valve
2007SaturnAura————N/ABlock Expansion Valve
2007SaturnIon————N/ABlock Expansion Valve
2006BuickAllure————N/ABlock Expansion Valve
2006BuickLaCrosse————N/ABlock Expansion Valve
2006ChevroletCobalt————N/ABlock Expansion Valve
2006ChevroletHHR————N/ABlock Expansion Valve
2006ChevroletImpala————N/ABlock Expansion Valve
2006ChevroletMalibu————N/ABlock Expansion Valve
2006ChevroletMonte Carlo————N/ABlock Expansion Valve
2006PontiacG6————N/ABlock Expansion Valve
2006PontiacGrand Prix————N/ABlock Expansion Valve
2006PontiacPursuit————N/ABlock Expansion Valve
2006SaturnIon————N/ABlock Expansion Valve
2005BuickAllure————N/ABlock Expansion Valve
2005BuickLaCrosse————N/ABlock Expansion Valve
2005ChevroletCobalt————N/ABlock Expansion Valve
2005ChevroletImpala————N/ABlock Expansion Valve
2005ChevroletMalibu————N/ABlock Expansion Valve
2005ChevroletMonte Carlo————N/ABlock Expansion Valve
2005PontiacG6————N/ABlock Expansion Valve
2005PontiacGrand Prix————N/ABlock Expansion Valve
2005PontiacPursuit————N/ABlock Expansion Valve
2005SaturnIon————N/ABlock Expansion Valve
2004ChevroletImpala————N/ABlock Expansion Valve
2004ChevroletMalibu————N/ABlock Expansion Valve
2004ChevroletMonte Carlo————N/ABlock Expansion Valve
2004PontiacGrand Prix————N/ABlock Expansion Valve
2004SaturnIon————N/ABlock Expansion Valve
2003SaturnIon————N/ABlock Expansion Valve