Taz107

I am replacing it because the wires corroded and the plug broke off right at the end, leaving no wire to splice back together on the factory one. Just wanted to let people know there is a cheaper aftermarket option available.

To help others who come across this problem...there is an alternative out there to the $160-$180CDN that GM wants for it... Phillips Temro p/n 3600082 is the replacment cord, most parts stores can get for around $50 CDN... As an example... http://www.oreillyauto.com/site/c/detail/ZRO0/3600082.oap?ck=Search_3600082_-1_1769&keyword=360008 I am going to cut the factory one off and splice the just the new plug end on, no way I'm crawling around under the truck in these temps trying to connect it to the block heater itself... Hope this helps someone else out...it took me way too long to find this info...

Pull the switch out, open it up so you can get at the back of the circuit board, check all the solder traces with a magnifying glass, bet you find a crack in the solder, or a cold solder. Just take a soldering iron and touch it to the solder enough so it flows again and you should be good to go...doesn't hurt to do the others while your in there, or if you can't see which one is the open circuit...