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Blower Relay (HVAC Fan)

This category on the website [ Relays and Wiring ] we are giving you all of the information related to the individual relays in the Buick Turbo Regal, along with the associated wiring, connector plugs, etc.

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VEHICLE APPLICATION:

Buick Regal, T-Type, Turbo T, Limited, Grand National, GNX

RELAY NAME:

HVAC Fan Blower Relay

PURPOSE OF RELAY:

heating & A/C fan blower

TURNS ON-OFF / FUNCTIONS / USED WHEN:

when multi-speed HVAC switch is turned on, the relay kicks on, to turn the fan blower motor on

LOCATION IN VEHICLE:

engine compartment, passenger side rear, on top of blower unit

ORIGINAL GM PART NUMBER:

10018449

RELAY / BASE COLOR:

metal case

CONNECTOR PLUG COLOR (RELAY SIDE):

black

WIRES ATTACHED (RELAY SIDE):

n/a

CONNECTOR PLUG COLOR (HARNESS SIDE):

black

NUMBER OF WIRES ATTACHED (HARNESS SIDE):

5

COLOR & PURPOSE OF (HARNESS SIDE) WIRES:

red “D”, goes to fusible link “A”
(connects with other things at fusible link)

orange “E”, goes to (junction) to heater ac control head (blower switch) “B” [hi]

dark blue “C”, goes to blower resistor “B”

purple “A”, goes to blower motor

black “B”, goes to (junction) to ground

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OTHER NOTES:

called “blower relay” on factory diagrams.

[SEE hvac blower resistor]
[SEE hvac blower motor]

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PHOTOS OF RELAY AND CONNECTED WIRES:
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Here’s a list of all of the relays in the Buick Regal:
(click the links to go to the one you need info about)

* Air Conditioning Compressor Cutout Relay (A/C Cut-out)
* Blower Relay (hvac fan blower motor)
* Coolant Fan Delay Relay
* Door Lock Relay
* Fuel Injector Relay (aftermarket)
* Fuel Pump Relay (factory)
* Fuel Pump Hot Wire Relay (aftermarket)
* High Speed Coolant Fan Relay
* Horn Relay
* Ignition Module Relay (aftermarket, hot wire kit for coil pack)
* Low Speed Coolant Fan Relay
* Power Antenna Relay
* Power Master Brake Relay
* Starter Interrupt Relay (part of Theft Deterrent system)
* Theft Deterrent Relay
* Twilight Sentinel Module Switch Relay

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