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Re: intake heater relay
Posted to HD/Fleet Forum on 10/17/2017 5 Replies

Indeed it does.

The intake air heater (IAH) is located in the air inlet tube and is used to warm the incoming air to aid in starting the engine and for proper cylinder combustion. The glow plug control module (GPCM) will command the IAH on when the engine co... Login to read more.

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