Chevy Silverado/ GMC Sierra Forum Discuss the Chevrolet Silverado and GMC Sierra here.

2004 silverado shortbed 4x4

  #1  
Old 06-28-2007, 07:55 AM
Junior Member
Thread Starter
Join Date: Jun 2007
Location:
Posts: 9
Default 2004 silverado shortbed 4x4

Heater coming on on it's own.Can have air running and heater will just start running.Can have everything and heater will come on full heat,doesen't matter if control is set on cool it will still blow hot.
This truck has standard heat with dual temp control.Air it cold when on buit the heater will take over and run for minute or so then go back to air or you can have both heat and air off and the heater will come on anyway???Whats up??
Thanks
 
  #2  
Old 06-28-2007, 12:58 PM
Senior Member
Join Date: Feb 2007
Location:
Posts: 2,167
Default RE: 2004 silverado shortbed 4x4

does it blow hot out both sides,or just 1?
 
  #3  
Old 06-29-2007, 06:41 AM
Junior Member
Thread Starter
Join Date: Jun 2007
Location:
Posts: 9
Default RE: 2004 silverado shortbed 4x4

It blows hot air ouy both sides.
 
  #4  
Old 06-29-2007, 09:07 AM
Senior Member
Join Date: Feb 2007
Location:
Posts: 2,167
Default RE: 2004 silverado shortbed 4x4

It'll probly have to be scanned...Actuators are notorous,but usually just 1 side....
I've seen bad junction block connections...to bad a/c heads..

Make SURE it blows heat out both sides...usually,an actuator goes out on 1 side.

It really needs to be checked for codes though...
 
  #5  
Old 06-29-2007, 04:22 PM
Junior Member
Thread Starter
Join Date: Jun 2007
Location:
Posts: 9
Default RE: 2004 silverado shortbed 4x4

actually it is only the drivers side, pass still cold.My mistake.
Where is the actuator located for drivers side?
 
  #6  
Old 06-30-2007, 05:17 AM
Senior Member
Join Date: Feb 2007
Location:
Posts: 2,167
Default RE: 2004 silverado shortbed 4x4

on the bottom of the hvac case....at the hump
 
  #7  
Old 06-30-2007, 05:32 AM
Junior Member
Thread Starter
Join Date: Jun 2007
Location:
Posts: 9
Default RE: 2004 silverado shortbed 4x4

Thank you I will give that a shot.
 
  #8  
Old 06-30-2007, 04:10 PM
Senior Member
Join Date: Feb 2007
Location:
Posts: 2,167
Default RE: 2004 silverado shortbed 4x4

warning...the little bastard is like 100 bucks
 
  #9  
Old 07-01-2007, 08:20 AM
Junior Member
Thread Starter
Join Date: Jun 2007
Location:
Posts: 9
Default RE: 2004 silverado shortbed 4x4

We are talking the part under the duct to the right side of the hump with the plug in right?
 
  #10  
Old 07-01-2007, 10:19 AM
Senior Member
Join Date: Feb 2007
Location:
Posts: 2,167
Default RE: 2004 silverado shortbed 4x4

yes..a reddish connector..the actuator is a heart shaped motor with two 5.5 mm screws holding it in..

WARNING...DO NOT plug your new one in and "try it" without it being mounted...the motor will over-travel and be useless after that....mount it securely before plugging it in
 

Thread Tools
Search this Thread
Quick Reply: 2004 silverado shortbed 4x4


Featured Sponsors
Vendor Directory

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.