engine block heater

[Bob Disney]

We have a 2005 Monterey 36' coach with a C9
the block heater plugs in under the bed
the receptacle went bad so I replaced it with another new gfi
Now there is still no heat being made
I checked the plug with a 1500 watt hair dryer to make sure there was no issue there, power is there
I am looking to find out where the block heater is located and if it requires draining out the engine coolant for a replacement or if there is another thing that could be the problem
 

[Eric Maclean]

Bob
The block heat cord is usually the weak link they usually burn out near the heater itself .
Unplug the cord and check both the heating element and the cord with an ohm meter .
Normally the antifreeze will have to be drained in order to replace the block heater element from the block.

Hope this helps
Eric

[Richard Davis]

Bob
Does your Monterey have the Aquahot (Hydrohot) with the engine heat option?  If it does, in my opinion, that is a better option for warming the engine in cold weather.
Richard