3rd Heater Core Plugged In 6 Months...

[Exhaustgases]

Next time, get the tech or manager to allow you or them to open up the failed heater core, on the spot.
It could be a defect and something is coming apart and blocking it inside. But then I guess more trucks would be showing up with the problem. Could be a bad hose somewhere in the system feeding the heater? Or someones over use of RTV.

 

[JWC86]

Next time, get the tech or manager to allow you or them to open up the failed heater core, on the spot.

How do you suggest I do that?

 

[Joba27n]

Next time, get the tech or manager to allow you or them to open up the failed heater core, on the spot.
It could be a defect and something is coming apart and blocking it inside. But then I guess more trucks would be showing up with the problem. Could be a bad hose somewhere in the system feeding the heater? Or someones over use of RTV.

Thats also most likely a no-no. Warranty parts have to be returned intact