Last week I posted about not getting heat and the dial spinning.

I fixed the dial, tightened the nut, drove it around, turn it on hot and got hot air.

Parked the car for a day, leave the following day and start to smell coolant anytime its on hot. Barely warmer than cold air all the way to work if its on hot and a moderate coolant smell.

At Lunch, warm air and a light coolant smell. No temp problems, no visible fluids anywhere, only when its set to hot.

Is the heater core a sealed unit? How tough is to check and replace?

Any other possabilities? This an LS1 not a rotor so any normal rotor stuff would not apply. Hoses are tight through the firewall.

I'm assuming the core is shot, 137K on the odometer, but I want to know if the unit is sealed, so if it were to leak would it go into the outer casing, or will whatever it could spill onto eventually fill and leave me with coolant in the interior?

Any other possabilities, and is there any risk to not fixing it right now, or should I just bypass the core until I do get it fixed, not alot of need for heat in the summer.

Thanks

 

the heater core looks like a small radiator, same design... its partialy enclosed in a box. its not hard to change just time consuming, you have to pull out the glove box, and then remove the blower motor, then the heater. to check if its leaking pull back the passenger carpet a bit and see if the floor is wet.

Michael