First pressure test system to determine where leak originates
repair the heater hose.
Find where it is leaking, and repair the leak, adding "Stop-leak" will possibly work, but may create more problems by doing so. If you can't find the leak, take it in for repair.
The cost to repair a water leak in a basement will depend with the leaking hole. The cost to repair it can range from $20 to about $150.
You do not recharge coolant, you replace it. If you are referring to refrigerant in the A/C unit, then first you need to have the leak repaired. It would not need recharging unless it is leaking. It is illegal to add refrigerant to a system that is leaking without repairing the leak. This is a job for a professional with the proper tools and knowledge. This is not a DIY repair. The cost depends on where the leak is.
My 97 Tahoe was leaking coolant and I couldn't find anything on the driveway or anywhere else. I took it to my mechanic and it was a rear manifold gasket leak, cost me about 500 dollars.
In general, yes a coolant leak in a 2002 Bonneville can be fixed. The issue whether it is worth the money to fix the leak. If the coolant is leaking from an upper or lower coolant hose, the repair is simple and inexpensive. If the coolant leak is from the radiator, it will be a bit more difficult and/or expensive to repair. Moving up the scale, if the coolant leak is coming from a manifold gasket, it will be still more expensive. Likewise for a coolant leak from the heater core. And at the upper end of the scale, if you are leaking coolant from a cracked engine block, you're looking at replacing the engine.
Coolant leaking from the heater core.
The heater core (a small radiator for your heat) is leaking, I would suggest a new heater core as they are about as cheep to replace as they are to repair.
Depends on why it is leaking.
When that happened on my 97 Lumina the coolant was leaking into the engine, and the light came on even when I added coolant because the whole system was just messed up. I had to take it in to the dealership and it cost 1,300 to fix it, so get it in ASAP before more damage happens.
No , this coolant is coming from your heater core and you are losing engine coolant ; you need to have this repaired because the engine will overheat and suffer damage that will be more expensive than the repair of the heater core .
Hey Ryan==This is too general. You have to see where it is leaking from and repair it. Good luck, Joe