On 03 silverados i belive the blower motor relay is internal to the blower motor resistor. i could be wrong though, check the underhood fuse/relay panel for one.
The heater blower for a 2002 Chevy Silverado is mounted under the dash. It is on the passenger side, in the heater housing.
Pass side firewall.
the blower motor relay is located next to the blower motor it is connected to the motor by a purple and black wires
the relays are behind the glove box. you have to take the glove box out to have access to the relay for the heating system
Its not the relay, it is the blower motor resistor.
It is located on the passenger side below the dash. A 7-wire harness goes to it. It is next to the blower motor, which is circular in shape.
Yes, located in the blower motor resistor pack. Follow the wires backward from the blower motor to find it.
The relays are integrated into the switch itself.
where is my hood latch located on my 1999 Chevy silverado pickup
Replace shoes brake 2003 Chevy
What about it? Need more info.
Most likely the Blower Motor Resistor.