Block Heater tripping GFCI

[Woodtyck]

After I plug the block heater in after about 5min or so, the GFCI trips. Tried another outlet/circut and different cord, but same thing happens...Short in block heater? Anyone else had an issue with this?

[lug]

I had same problem with a block heater in a 99 Blazer up in Alaska. The element got coolant inside and popped the GFCI. Replaced the heater and problem was solved. I did check my power cord first for obvious signs and then a continuity check.

[bigcountrysg]

It could be the plug on the cord, it could be the element. I really don't know of anyway to check them.

Last time I bought the block heater was like 45 dollars, the cord is another 20-30 bucks from the dealer.

[jimmyv13]

I noticed my truck not heating up with the block heater this morning. My extension cord has a lighted end so I know when it has power...the GFI was tripped, and would not deliver power to the cord unless I unplugged the cord from the truck. It has been cold and raining the past two days, so I may not get a chance to look at it for a few days. How had is it to get the element or cord out for replacement?

[turbotibbo]

yup mine does this too