[Vehicle Fitment-1]: Compatible with Chevrolet Silverado 1500 (1999-2013), Silverado 1500 Classic (2007), Silverado 1500 HD (2001-2006), Silverado 1500 HD Classic (2007), Silverado 2500 (1999-2004), Silverado 2500 HD (2001-2014), Silverado 2500 HD Classic (2007), Silverado 3500 (2001-2006), Silverado 3500 Classic (2007), Silverado 3500 HD (2007-2014) [Vehicle Fitment-2]: Compatible with Chevrolet Avalanche (2007-2013), Avalanche 1500/2500 (2002-2006), Cheyenne (2007-2013), Suburban (2014), Suburban 1500 (2000-2014), Suburban 2500 (2000-2013), Tahoe (2000-2014);Compatible with Cadillac Escalade (2002-2014), Escalade ESV (2003-2014), Escalade EXT (2002-2013); Compatible with Hummer H2 (2008-2009) [Vehicle Fitment-3]: Compatible with GMC C3500HD (2001-2002), Sierra 1500 (1999-2013), Sierra 1500 Classic (2007), Sierra 1500 HD (2001-2003/2005-2006), Sierra 1500 HD Classic (2007), Sierra 2500 (1999-2004), Sierra 2500 HD (2001-2014), Sierra 2500 HD Classic (2007), Sierra 3500 (2001-2006), Sierra 3500 Classic (2007), Sierra 3500 HD (2007-2014), Sierra 350 【 Anti-Corrosive Aluminum & Leak-Resistant Design 】This durable heater core is built to withstand harsh conditions, featuring high-quality aluminum and brazed fins for efficient heat transfer and long-lasting durability. Corrosion-resistant coating and precision soldering help prevent leaks, ensuring reliable performance over time. Combined with compact design with more tubes and fins maximizes heat transfer area, improving product performance. 【Compact Design, Efficient Heating Performance】 This heater core delivers fast and consistent heating to your cabin, ensuring maximum comfort in cold weather.Heater core compact multi-fin design increases surface area for better heat exchange, allowing engine coolant heat to transfer quickly into the airflow of your HVAC system. The aluminum core's high thermal conductivity further enhances heat transfer efficiency, reducing warm-up time and maintaining a steady temperature distribution inside the vehicle.

🌟Compatibility🌟

✔️ Fit for Cadillac Escalade (2002-2006) 5.3L,6.0L GAS,

✔️ Fit for Cadillac Escalade ESV (2003-2006) 6.0L GAS,

✔️ Fit for Cadillac Escalade EXT (2002-2006) 6.0L GAS,

✔️ Fit for Chevrolet Avalanche 1500 (2002-2006) 5.3L FLEX,

✔️ Fit for Chevrolet Avalanche 1500 (2002-2006) 5.3L GAS,

✔️ Fit for Chevrolet Avalanche 2500 (2002-2006) 8.1L GAS,

✔️ Fit for Chevrolet Cheyenne (2007) 5.3L GAS,

✔️ Fit for Chevrolet Silverado 1500 (2003-2006) 4.3L,4.8L,5.3L,6.0L GAS,

✔️ Fit for Chevrolet Silverado 1500 (2003-2006) 5.3L FLEX,

✔️ Fit for Chevrolet Silverado 1500 (2004-2006) 5.3L FULL HYBRID EV-GAS (FHEV),

✔️ Fit for Chevrolet Silverado 1500 Classic (2007) 4.3L,4.8L,5.3L,6.0L GAS,

✔️ Fit for Chevrolet Silverado 1500 Classic (2007) 5.3L FLEX,

✔️ Fit for Chevrolet Silverado 1500 Classic (2007) 5.3L FULL HYBRID EV-GAS (FHEV),

✔️ Fit for Chevrolet Silverado 1500 HD (2003-2006) 6.0L GAS,

✔️ Fit for Chevrolet Silverado 1500 HD Classic (2007) 6.0L GAS,

✔️ Fit for Chevrolet Silverado 2500 (2003-2007) 4.8L,5.3L,6.0L GAS,

✔️ Fit for Chevrolet Silverado 2500 HD (2003-2005) 6.0L CNG,

✔️ Fit for Chevrolet Silverado 2500 HD (2003-2006) 6.0L,8.1L GAS,

✔️ Fit for Chevrolet Silverado 2500 HD (2003-2006) 6.6L DIESEL,

✔️ Fit for Chevrolet Silverado 2500 HD Classic (2007) 6.0L,8.1L GAS,

✔️ Fit for Chevrolet Silverado 2500 HD Classic (2007) 6.6L DIESEL,

✔️ Fit for Chevrolet Silverado 3500 (2003-2005) 6.0L CNG,

✔️ Fit for Chevrolet Silverado 3500 (2003-2006) 5.7L, 6.0L, 8.1L GAS,

for Chevrolet Silverado 3500 (2003-2006) 6.6L DIESEL,

for Chevrolet Silverado 3500 Classic (2007) 6.0L, 8.1L GAS,

for Chevrolet Silverado 3500 Classic (2007) 6.6L DIESEL,

for Chevrolet Sonora (2000-2006) 5.3L,5.7L GAS,

for Chevrolet Suburban 1500 (2000-2006) 5.3L,5.7L,6.0L GAS,

for Chevrolet Suburban 1500 (2002-2006) 5.3L FLEX,

for Chevrolet Suburban 2500 (2000-2006) 6.0L,8.1L GAS,

for Chevrolet Tahoe (2000-2006) 4.8L,5.3L,5.7L GAS,

for Chevrolet Tahoe (2002-2006) 5.3L FLEX,

for GMC Sierra (2007) 5.3L GAS,

for GMC Sierra 1500 (2003-2006) 4.3L,4.8L,5.3L,6.0L GAS,

for GMC Sierra 1500 (2003-2006) 5.3L FLEX,

for GMC Sierra 1500 (2005-2006) 5.3L FULL HYBRID EV-GAS (FHEV),

for GMC Sierra 1500 Classic (2007) 4.3L,4.8L,5.3L,6.0L GAS,

for GMC Sierra 1500 Classic (2007) 5.3L FLEX,

for GMC Sierra 1500 Classic (2007) 5.3L FULL HYBRID EV-GAS (FHEV),

for GMC Sierra 1500 HD (2003-2006) 6.0L GAS,

for GMC Sierra 1500 HD Classic (2007) 6.0L GAS,

for GMC Sierra 2500 (2003-2004) 6.0L GAS,

for GMC Sierra 2500 HD (2003-2005) 6.0L CNG,

for GMC Sierra 2500 HD (2003-2017) 6