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Old 11-26-2012, 11:51 AM   #1 (permalink)
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Block heater tripping GFCI

I had the truck plugged in all night last night for the first time this year. I came out in the morning and it had tripped the GFCI on the outlet. Any one else had this problem? Any good fix?
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Old 11-28-2012, 12:39 PM   #2 (permalink)
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On this site I've heard of the cord going bad. I myself have never experienced it.
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Old 11-28-2012, 01:38 PM   #3 (permalink)
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happened to me....the way I had the cord ran allowed it to rub through in one spot and ground out on the metal causing it to trip my breaker
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Old 11-28-2012, 06:33 PM   #4 (permalink)
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i had the same problem with my 05 but never got it fixed before trading it. could be as simple as getting a new cord. my fear was needing a new element as it looks like a PITA to replace
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removed the 6.6 thingy with a fernco cap
diablosport predator programmer

SOLD:2005 reg cab lly ,sport red
91,516 miles
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Old 11-28-2012, 06:36 PM   #5 (permalink)
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i just cut the end off an extension cord and used that, works good now and the cord is longer
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Old 11-28-2012, 06:37 PM   #6 (permalink)
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Most likely a short as stated...

What amperage is the breaker rated for on the GFCI circuit?
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Old 11-29-2012, 07:26 PM   #7 (permalink)
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I inspected the cord carefully, I can't see any place where it would have shorted. Is there a way to test it with a multi-meter?

I tried a different outlet, it tripped too. I tried plugging the cord into my miter saw to see if it was the cord. It worked fine. I really hope I don't have to replace the element, that looks like a PITA to get to.
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2005 Black Duramax Crew Cab Short Box
Edge Juice w/Attitude - 4" straight pipe (shaved the muff and killed the kitty) with 5" tip - Blocked EGR - triple guage pod (Aux Fuel, Air Bags, Boost) - air bags w/compressor and 2 gallon air tank - tint (5 back/15 front) - custom grill - pace roll-top cover - 28 gallon aux fuel tank (gravity feed) - Pioneer AVIC-D3 in dash DVD/GPS/Bluetooth unit with XM Nav Traffic - metra on-star adaptor - PAC SWI-PS steering wheel remote interface - 2 10" MTX subs with Rockford amp - head rest monitors - passenger visor monitor - viper remote start - 07 mirrors (w/ DIY leveling) - DIY pre-OEM Cat fuel filter - boost stick - AEM Brute Force CAI - 20" black spoke KMC wheels mounted with 305x50x20's

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Old 11-29-2012, 07:28 PM   #8 (permalink)
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Probably the element has failed internally if it's repeatable across multiple receptacles. Hate to be the bearer of bad news.
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Old 11-29-2012, 07:31 PM   #9 (permalink)
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my cord looked fine too. but like someone said above try cutting the end off and replace it with another end
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2007 Classic ccsb LBZ, sport red
18" XD DIESEL's with 285/65/18 NITTO TERRA GRAPPLER
B&W gooseneck hitch
Line-X bed liner
20% tint
100,000 miles
4" mbrp cat back with 5" tip, cat delete pipe
.........^^^^^.......................^^^^^...
(thanks paoutdoorsman)......(www.XDP.com)
removed the 6.6 thingy with a fernco cap
diablosport predator programmer

SOLD:2005 reg cab lly ,sport red
91,516 miles
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Old 11-29-2012, 07:34 PM   #10 (permalink)
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Yes, I would absolutely positive try a new cord before rushing to replace the element. I should have mentioned that.
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Mark - Courtice, Ontario, Canada.
'97 C3500 Crew Cab Long Box Dually 6.5 Turbo Diesel.
Rebuilt with Navistar 506 block spring 2012
Special thanks to Racer55 and WhiteK2500 for their invaluable assistance!
Commercial OTR Driver Since '95

Find my list of reference information HERE
New members, please introduce yourself HERE
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