Block heater tripping GFCI - Chevy and GMC Duramax Diesel Forum
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post #1 of 14 (permalink) Old 11-26-2012, 09:50 AM Thread Starter
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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?

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 - train horn - 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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post #2 of 14 (permalink) Old 11-26-2012, 10:22 AM
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Could it possibly be the cord you ran from the truck to the plug in? Check that out first

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post #3 of 14 (permalink) Old 11-26-2012, 10:26 AM
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i ran a heavier gage cord, solved my problem.If that dont work try to plug into a reg outlet?

2005 LLY ECSB
2004 1/2 4x4 5.3
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post #4 of 14 (permalink) Old 11-26-2012, 12:43 PM Thread Starter
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Cord is good, it's the same cord I used last year. Also tried it on my miter saw to test it. Worked fine.

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 - train horn - 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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post #5 of 14 (permalink) Old 11-26-2012, 12:57 PM
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I had same problem, replaced the GFI plug and problem was fixed. 6-7$ at Home Depot and 5 minutes to replace it. Also put it on a programmable timer so it comes on at about 4:30 AM instead of running up my electric bill all night. Works great.

Jeremiah
2006 LBZ W/ EFI DSP 5 by Mark, DP 3794 Stg 2 Turbo, AFE intake and 4" EX. EGR blocked, Autometer boost & pyro gauges. All Amsoil. 230k Miles
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post #6 of 14 (permalink) Old 11-26-2012, 01:23 PM
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I had this issue as well. It wasn't with my diesel, but I live in Alaska and I had to leave my vehicle plugged in over night a lot as it would drop to -60. My problem was I had a 3 way plug that the oil pan heater, battery blanket and block heater plugged into. The three way plug had gone bad causing my GFCI to fault out. swapped my three way plug and everything was good to go afterwards.

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post #7 of 14 (permalink) Old 11-26-2012, 01:27 PM
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Quote:
Originally Posted by premis View Post
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?
Just curious, but why do you plug it in? I used to until I realized it has to be well below 0 before it is necessary.

2005 ext cab sb LLY
4" exhaust w/muffler, EGR delete/Sinister diesel, Kodiak LBZ mouthpiece, PCV rerouted, Nicktane/CAT adapter, Autometer pyro & boost gauges, EFI Live by Kory, Transgo, pump rub kit, LBZ intake conv, H2's, Debadged
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post #8 of 14 (permalink) Old 11-26-2012, 04:09 PM Thread Starter
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Quote:
Originally Posted by nick1camper View Post
Just curious, but why do you plug it in? I used to until I realized it has to be well below 0 before it is necessary.
I've found that plugging it in allows much quicker warm up times and no need for "high idle". That saves me on fuel and neighbors getting mad about a jet engine taxiing in my driveway.

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 - train horn - 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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post #9 of 14 (permalink) Old 11-26-2012, 04:35 PM
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^^^ And, you get warm air in the cab before you get out of the neighborhood.



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post #10 of 14 (permalink) Old 11-29-2012, 06:39 PM Thread Starter
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I've tried multiple cords and multiple outlets, it is definitely a problem with the truck. Does anyone know if the cord can be removed easily so I can check it before ordering a block heater?

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 - train horn - 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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