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Block Heater Cord Replacement

Block Heater Cord Replacement

Postby baker1731 [OP] » Jan 09 2011, 6:59pm

Recently damaged the stock GM block heater cord on my '07 Sierra Classic. It's my understanding that due to sensors and electronics within the engine, the plug was equipped with a thermostat to prevent the heater from working above 0 degrees F. Is there a replacement available for this cord without the thermostat plug end? If so, what changes in running it above 0 degrees F? Any help is appreciated.
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Re: Block Heater Cord Replacement

Postby lzn197 » Jan 10 2011, 1:37pm

The cord used to be available separately. Talked to the dealer.
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Re: Block Heater Cord Replacement

Postby EKinMN » Jan 10 2011, 1:55pm

You definitely would not need at block heater above zero, if at all. EFI engines, free flowing oils, etc have really all but eliminated the need for block heaters (with exception for our friends in Canada and Alaska, perhaps).
Using a block heater when the temperature is too warm could overheat the block area. It also may cause your engine to start and run rough. I believe this is because the engine ECM thinks it's much warmer than it is, and causes the engine to run too lean.
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Re: Block Heater Cord Replacement

Postby adams99z71 » Jan 10 2011, 3:32pm

i would go to your local hardware store and talk to an eletrical guy, you should be able to repair the cord, worse case being that you would have to cut it back closer to the block and replace that section. as far as the not using it above 0deg you might find a temp controled outlet at homedepo/lowes to plug into the wall with.
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