HomeHVAC > Motors, Core, Case and Related ComponentsGlobal Parts 8231671 HVAC Heater Core - Rear
Part #: 8231671

Global Parts 8231671 HVAC Heater Core - Rear

Rear
59 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Chevrolet, GMC, and Buick, Trailblazer, Envoy, Rainier, Trailblazer EXT, Envoy XL, and Envoy XUV
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Overview of Global Parts HVAC Heater Core 8231671

The Global Parts HVAC Heater Core 8231671 is designed specifically for select Buick, Chevrolet, and GMC models. Engineered with durable aluminum, this heater core ensures reliable heat transfer and long-lasting performance for your vehicle's heating system.

  • Specific fitment for Buick Envoy, Envoy XL, Envoy XUV, Chevrolet Trailblazer, Trailblazer EXT, GMC Rainier
  • Constructed from corrosion-resistant aluminum material
  • Non-adjustable pipe positioning for direct replacement
  • Part number 8231671 for precise identification

Durable Aluminum Construction for Efficient Heating

This HVAC heater core is made from aluminum, a material known for its excellent thermal conductivity and resistance to corrosion. The aluminum construction helps maintain efficient heat exchange within the heating system of your Buick Envoy or Chevrolet Trailblazer. The part is designed with fixed pipe positioning, matching the original equipment specifications to simplify installation and ensure proper fitment.

Compatible Vehicles and Fitment Details

The Global Parts heater core 8231671 is specifically compatible with the following vehicles: Buick Envoy, Envoy XL, Envoy XUV; Chevrolet Trailblazer, Trailblazer EXT; and GMC Rainier. This specific fitment ensures that the heater core integrates seamlessly with the HVAC system of these models, maintaining optimal heating performance.

Common Issues Addressed by This Heater Core

  • Insufficient cabin heat due to clogged or leaking heater core
  • Coolant leaks inside the vehicle cabin
  • Fogging or moisture buildup on windows from heater core failure
  • Overheating engine caused by compromised heater core function
  • Unpleasant odors from coolant leaks within the HVAC system

Installation Notes and Tips

Installation of the Global Parts heater core 8231671 requires removal of the dashboard and HVAC housing in the specified Buick, Chevrolet, or GMC models. Since the pipe positioning is fixed, no adjustments are necessary, which helps reduce installation complexity. It is recommended to flush the cooling system and replace any worn hoses during installation to ensure optimal performance and longevity.

Quality Assurance and Warranty Information

Global Parts provides this heater core with quality standards that meet or exceed OEM specifications. The aluminum material offers durability and resistance to corrosion, contributing to a longer service life. Please refer to Global Parts' warranty policy for specific coverage details related to part number 8231671.

This part fits 59 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2009ChevroletTrailblazer5.3LV8Rear
2009ChevroletTrailblazer6.0LV8Rear
2009ChevroletTrailblazer4.2LL6Rear
2009GMCEnvoy4.2LL6Rear
2009GMCEnvoy5.3LV8Rear
2008ChevroletTrailblazer5.3LV8Rear
2008ChevroletTrailblazer6.0LV8Rear
2008ChevroletTrailblazer4.2LL6Rear
2008GMCEnvoy4.2LL6Rear
2008GMCEnvoy5.3LV8Rear
2007BuickRainier5.3LV8Rear
2007BuickRainier4.2LL6Rear
2007ChevroletTrailblazer5.3LV8Rear
2007ChevroletTrailblazer6.0LV8Rear
2007ChevroletTrailblazer4.2LL6Rear
2007GMCEnvoy4.2LL6Rear
2007GMCEnvoy5.3LV8Rear
2006BuickRainier5.3LV8Rear
2006BuickRainier4.2LL6Rear
2006ChevroletTrailblazer5.3LV8Rear
2006ChevroletTrailblazer6.0LV8Rear
2006ChevroletTrailblazer4.2LL6Rear
2006ChevroletTrailblazer EXT4.2LL6Rear
2006ChevroletTrailblazer EXT5.3LV8Rear
2006GMCEnvoy4.2LL6Rear
2006GMCEnvoy5.3LV8Rear
2006GMCEnvoy XL5.3LV8Rear
2006GMCEnvoy XL4.2LL6Rear
2005BuickRainier5.3LV8Rear
2005BuickRainier4.2LL6Rear
2005ChevroletTrailblazer4.2LL6Rear
2005ChevroletTrailblazer EXT4.2LL6Rear
2005ChevroletTrailblazer EXT5.3LV8Rear
2005GMCEnvoy4.2LL6Rear
2005GMCEnvoy5.3LV8Rear
2005GMCEnvoy XL5.3LV8Rear
2005GMCEnvoy XL4.2LL6Rear
2005GMCEnvoy XUV4.2LL6Rear
2005GMCEnvoy XUV5.3LV8Rear
2004BuickRainier5.3LV8Rear
2004BuickRainier4.2LL6Rear
2004ChevroletTrailblazer4.2LL6Rear
2004ChevroletTrailblazer EXT4.2LL6Rear
2004ChevroletTrailblazer EXT5.3LV8Rear
2004GMCEnvoy4.2LL6Rear
2004GMCEnvoy XL5.3LV8Rear
2004GMCEnvoy XL4.2LL6Rear
2004GMCEnvoy XUV4.2LL6Rear
2004GMCEnvoy XUV5.3LV8Rear
2003ChevroletTrailblazer4.2LL6Rear
2003ChevroletTrailblazer EXT4.2LL6Rear
2003ChevroletTrailblazer EXT5.3LV8Rear
2003GMCEnvoy4.2LL6Rear
2003GMCEnvoy XL5.3LV8Rear
2003GMCEnvoy XL4.2LL6Rear
2002ChevroletTrailblazer4.2LL6Rear
2002ChevroletTrailblazer EXT4.2LL6Rear
2002GMCEnvoy4.2LL6Rear
2002GMCEnvoy XL4.2LL6Rear

* 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.