Did you test the circuit for B+ with a DMM - digital multi-meter ? Look at a wiring diagram to see all thing's involved ? Read in factory service info. how it works ? Without testing we'd only be guessing .
Air Speed
The HVAC control assembly applies ground to the blower motor control circuit that corresponds to the selected blower speed. The resistors and the blower motor are in a series circuit. The following list represents the number of resistors in series with the blower motor per particular speed request:
• Low speed--3 resistors
• Medium 1 speed--2 resistors
• Medium 2 speed--1 resistor
When the operator requests High speed, the HVAC control assembly applies ground directly to the blower motor through the high blower motor control circuit. The resistor card has a fusible link which, if blown, will require that the card be replaced.
Free wiring diagrams here
http://www.bbbind.com/free_tsb.html Enter vehicle info. Year , make , model an engine size. Under system click on HVAC ,under subsystem HVAC controls . Click the search button then click the first blue link , this is the blower motor electrical circuit .
Suggest u watch a few video's on youtube on automotive electrical testing .
Electric Testing Techniques You Need to Know
SOURCE: 2005 Chevrolet Uplander LT - Cigarette and Aux power outlet not working
if the fuse is good and there is no relay then either you have a loose ground/positve wire or the socket is bad. you can easily purchase a after market socket from Napa or Oreillys for a few dollars of the problem is not a loose wire or bad fuse. good luck please rate this solution...thanks
270 views
Usually answered in minutes!
×