block heater plug at block? - Chevy and GMC Duramax Diesel Forum
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post #1 of 9 (permalink) Old 11-28-2011, 03:42 PM Thread Starter
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block heater plug at block?

Does anybody know what the plug looks like where it plugs in at the block? I found a plug that was unplugged under my truck and im thinking its the block heater. Its an orange plug with 3 wires, does this sound right.
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post #2 of 9 (permalink) Old 11-28-2011, 04:21 PM
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a picture of the plug you found would do wonders.

2007.5 2500HD CC/SB LTZ
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post #3 of 9 (permalink) Old 11-28-2011, 04:34 PM
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The block heater cord plugs into the heater just above the starter, and the cord, if never been used is taped to the harness under the passenger side battery.

We don't know what wires you are talking about!-- Picture please.

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post #4 of 9 (permalink) Old 11-28-2011, 07:11 PM Thread Starter
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its an orange plug
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2001 ecsb, Diablo Predator, 5" MBRP,PPE boost valve
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post #5 of 9 (permalink) Old 11-28-2011, 07:22 PM
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Is that the driver's side or passenger side?

If it's the passenger, then it looks to me like someone took the heater out and replaced it with it with a different one or a knock sensor.

Google told me that the heating element is on the passenger side bank, right in front of the motor mount... obviously through a freeze plug.

I looked up the part and it looks nothing like that though.

2007.5 2500HD CC/SB LTZ
498 rwhp, 845 rwtq
DiamondEye 4", EFI Live by BobO, Edge Insight CTS, S&B Intake, Bilstein 5100 shocks, MOOG idler/pitman with SS support, Raptor 150, P553207, !PCV, !EGR, Transgo Jr, Rare Parts tie rods, 55 watt 4.5k HID low/hi/fogs, Belltech 3" lowering shackle
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post #6 of 9 (permalink) Old 11-28-2011, 07:33 PM Thread Starter
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ya its the passenger side and thanks for checkin it out for me

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post #7 of 9 (permalink) Old 11-28-2011, 07:42 PM
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The actual block heater looks like this.



Just the heating element alone will run you $20-$30.

If you want to replace the cord do, it's ~$60 for both.

2007.5 2500HD CC/SB LTZ
498 rwhp, 845 rwtq
DiamondEye 4", EFI Live by BobO, Edge Insight CTS, S&B Intake, Bilstein 5100 shocks, MOOG idler/pitman with SS support, Raptor 150, P553207, !PCV, !EGR, Transgo Jr, Rare Parts tie rods, 55 watt 4.5k HID low/hi/fogs, Belltech 3" lowering shackle
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post #8 of 9 (permalink) Old 11-28-2011, 07:44 PM
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Thats the block heater.
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post #9 of 9 (permalink) Old 11-29-2011, 06:23 PM Thread Starter
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Thats what i thought it was but i havent had to use it yet and its startin to get cold, just happend to notice it hangin there when i was under the truck
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