To replace the heater core on a 1999 Cadillac STS, first, disconnect the battery and drain the coolant. Remove the dashboard and center console to access the heater core, which is located behind the HVAC unit. Disconnect the heater hoses and any retaining clips, then carefully pull out the old heater core and replace it with the new one. Reassemble the dashboard, reconnect the hoses, and refill the coolant before testing the system.
how do u replace the heater core
The dash may have to come out. It be better to take it to the dealer or a VERY qualified shop.
Behind the glove box
How do you replace a front turn signal bulb for a 2000 sts cadillac?"
Autozone, advanced auto parts, and other autoparts stores.
In a 1999 Cadillac STS, the heater hoses are located at the rear of the engine compartment, connected to the engine and the heater core. One hose carries coolant from the engine to the heater core, while the other returns the coolant back to the engine. Accessing them may require moving some components, such as the air intake or other engine covers, depending on your specific model configuration. Always ensure the engine is cool before attempting any maintenance on the hoses.
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Soundsw like heater core is going bad. You will smell antifreeze prior to actually noticing water/steam leak
Cadillac STS was created in 2005.
No, ..
cost 3-4 grand to replace
If that is the Northstar engine, yes.