A-Premium HVAC Heater Core for Chevrolet GMC Cadillac — Direct-Fit, Corrosion-Resistant (1988–2002 Models)

A-Premium HVAC Heater Core is a direct-fit replacement designed to restore warm-air heating and climate control performance for select Chevrolet, GMC and Cadillac trucks and SUVs.

This heavy-duty heater core is built to match original equipment fit and thermal flow for a range of late‑1980s through early‑2000s General Motors vehicles. It’s manufactured with corrosion-resistant materials and precision tube-and-fin construction to help ensure efficient cabin heat transfer and reliable operation when installed according to vehicle-specific requirements. Verify your exact year and model in the fitment tool before ordering to ensure compatibility.

Which vehicles does this heater core fit?

Compatibility covers many Chevy, GMC and Cadillac models across multiple model years—especially full-size trucks and SUVs. Fitment varies by model year and air conditioning configuration, so confirm your vehicle details before purchase.

• Cadillac Escalade 1999–2000
• Chevrolet Tahoe 1995–1999; C1500/C2500/C3500 and Suburban variants spanning 1988–2000
• GMC Yukon 1992–2000 (early 2000 models only); C/K series trucks 1988–2002 including TopKick/Kodiak
• Special notes: 1988–1991 C/K models require vehicles equipped with air conditioning; always use the vehicle fitment checker.

How does this heater core compare to the original equipment part?

The A-Premium core is engineered to meet or exceed original equipment dimensions and fluid routing so it installs without modification in compatible vehicles. Materials and brazing are selected to resist electrochemical corrosion and to maintain heat transfer over time.

• Direct-fit inlet/outlet locations and mounting points for straightforward replacement
• High-quality tube-and-fin construction for efficient cabin heating
• Corrosion-resistant finish to extend service life
• Reference numbers included for cross-checking with OEM parts

What should I check before installing this heater core?

Confirming correct fitment and preparing the system will reduce installation time and help prevent leaks or premature failure. Drain the cooling system, inspect hoses, and follow vehicle-specific service procedures for safe removal and reassembly.

• Enter year, make and model in the fitment tool and read the special note prior to purchase
• Verify reference numbers: 94483, 3091316, 3093412, 3949254, 52452915, 52467018, 52467186, 89019173, HT8240C
• Ensure the vehicle has A/C where required by fitment (1988–1991 C/K models)
• Flush the heater hoses and cooling system before installing the new core

What support and warranty come with the product?

A-Premium backs this heater core with a one-year unlimited-mileage guarantee and customer support for fitment or installation questions. The warranty covers manufacturing defects under normal use—keep proof of purchase and vehicle information for any claim.

• One-year unlimited-mileage limited warranty from A-Premium
• Customer service available for fitment verification and technical questions
• Suggested pre-install checks and fitment reminders included with the part

Who is this for: This heater core is intended for owners and technicians working on late‑1980s through early‑2000s Chevrolet, GMC and Cadillac full-size trucks and SUVs who need a reliable, OE‑style replacement. It’s a good match when the original core is leaking, clogged, or no longer delivering sufficient cabin heat, and for restorations where maintaining factory routing and mounting is important. Always confirm fitment and follow vehicle-specific repair procedures before installation.