If the heat in your older GM SUV or truck isn't working, or you're seeing coolant leaks inside the cabin, the heater core might be the culprit. This SCITOO replacement heater core is a direct fit for a wide range of vehicles from 1998-2005, including the Chevy Blazer and S10, GMC Jimmy and Sonoma, and the Oldsmobile Bravada (check the full list in the description to confirm your exact model and year). It's a fully brazed aluminum unit, which is durable and efficient at transferring heat from the engine coolant to warm up your cab. Dimensions are approximately 280mm H x 197.5mm W x 26mm D, with a 19mm inlet. It replaces OEM numbers like 93014, 394195, and 9010035. Installation is a moderate DIY job that involves working under the dashboard—it's made to OE specs for a proper fit. Always compare the picture and part numbers to your old unit before buying to ensure it's the right one.
