Express 1/2 Ton Van V6-4.3L VIN W (1999)
Blower Motor Relay: Locations
HVAC System - Manual
Auxiliary Blower Motor High, Low and Medium Speed Relay
Auxiliary Heater And A/C Wiring
In the left rear of the interior cabin, behind the rear wheel house
Blower Motor Resistor/Relay (Internal to Blower Motor)