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Old 01-07-2011, 10:54 AM
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98 gmc 3500 hvac relay replacement

I've replaced the blower motor relay before in a 06 gmc truck, but I can't find the relay on this truck? Anyone can help locating the relay connection? I've taken the plastic cover off the blower and can't see it.

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Old 01-07-2011, 03:26 PM
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The relays are under the hood or on the left side of the instrument panel under a plastic lid.

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Old 01-07-2011, 06:02 PM
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Some GM products in this era have the blower relay built into the blower resistor assembly.Also that year had a problem with melted connectors at the resistor.
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Old 01-08-2011, 01:23 PM
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Quote:
Originally Posted by vicrod
The relays are under the hood or on the left side of the instrument panel under a plastic lid.

vicrod
Nope. I'm looking at the factory service manual right now. The blower high speed relay is clipped to the top of the HVAC box under the dash. It should be just to the driver's side of the blower speed resistor. The relay is located here because the blower motor is inside the truck, under the dash.
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