Engine block heater install manual

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AliBaba

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Does anyone have resources to help get the installation manual for 85515803. I bought online from a GM dealer and it came with no instructions other than to visit accessories.gmc.com. When you browse to the part there are no instructions.

I’ve also contacted my local dealer and the only thing they were able to get me was the instruction to replace the plug portion in the event of a failure.

Unfortunately there are more parts in this kit than just a cord so it is not easy to figure out like a puzzle.

Thanks.
 
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AliBaba

AliBaba

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Dealer only has instructions to remove/replace the heating element. They having nothing else in their systems that help. On their end they show 1.5 hrs to install but if you look online the cost to install is quoted in the accessory section as ~$700, doesn’t add up.

This seems to be an accessory of confusion for everyone. As of now the dealer is going to try and call GM and get some answers for me. Someone has to know how this thing installs.

I’m really hoping someone who already has it can chime in and share some pictures of the wiring and plug location on their Z71/AT4 model.
 

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