Changed coolant temp sensor and thermostat - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



Welcome Enthusiast! If you already own a Chevy TrailBlazer or GMC Envoy or perhaps thinking of purchasing such a vehicle, then you have come to the best TrailBlazer and Envoy site on the net! Rainier, Bravada, Ascender, and 9-7x owners welcome too!

You are currently viewing our site as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to search and post topics, communicate privately with other members, respond to polls, upload content, and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.
Join Today!
Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 General Tech Q&A > General

General If it doesn't fit in any other forum

TrailVoy.com is the premier GMC Envoy Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools
  #1  
Old 05-25-2019, 06:06 PM
bmull6996 bmull6996 is offline
Junior Member
 
2003 Chevy TrailBlazer LS
Black 4.2L I6 4X4
Join Date: Sep 2016
Location: Richmond, Indiana
Posts: 3
Changed coolant temp sensor and thermostat

I recently changed my engine coolant temperature sensor (ECT) and also changed the thermostat and now my 2004 GMC envoy is overheating which it never did before. Anyone know what I should do next?
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 05-25-2019, 10:55 PM
Relfan Relfan is offline
Junior Member
 
2006 GMC Envoy SLT
Silver 4.2L I6 AWD
Join Date: May 2019
Location: Texas
Posts: 5
So, why did you change the sensor and thermostat if you car never overheated?
Reply With Quote Quick reply to this message
  #3  
Old 05-25-2019, 11:38 PM
bmull6996 bmull6996 is offline
Junior Member
 
2003 Chevy TrailBlazer LS
Black 4.2L I6 4X4
Join Date: Sep 2016
Location: Richmond, Indiana
Posts: 3
Quote:
Originally Posted by Relfan View Post
So, why did you change the sensor and thermostat if you car never overheated?
Because those are codes that showed when I had it scanned
Reply With Quote Quick reply to this message
 
  #4  
Old 05-26-2019, 12:27 AM
Relfan Relfan is offline
Junior Member
 
2006 GMC Envoy SLT
Silver 4.2L I6 AWD
Join Date: May 2019
Location: Texas
Posts: 5
Overheating

There are the usually remedies for air in your cooling system(which can cause your issue): Let it idle with the cap off and/or park your car with the front uphill and idle the engine with the cap off. That's not specific to Trailvoys. It's works for most anything. Don't let it overheat in any situation though.
Reply With Quote Quick reply to this message
  #5  
Old 05-29-2019, 06:58 PM
Grinder's Avatar
Grinder Grinder is offline
Junior Member
 
2004 Chevy TrailBlazer LT
Indigo Blue Metallic 4.2L I6 4X4
Join Date: May 2011
Location: Sunbury , Pa
Posts: 38
Bad thermostat even when new could be it. My brother had a Jeep ZJ that had a crap thermostat brand new outta the box and was stuck closed even though the old one was still working. Out with the new in with the old fixed it.
Reply With Quote Quick reply to this message
  #6  
Old 05-29-2019, 07:26 PM
Cuvkiller's Avatar
Cuvkiller Cuvkiller is offline
Junior Member
 
2004 GMC Envoy SLT
Indigo Blue Metallic 4.2L I6 4X4
Join Date: Jun 2016
Location: Illinois
Posts: 14
I remember when mine started to overheat, i simply changed the radiator cap with an acdelco and it worked great agyer because mu dystem wasnt holding pressure because the cap was old. Try that, theyre cheap too
Reply With Quote Quick reply to this message
  #7  
Old 05-29-2019, 07:58 PM
gspfunk's Avatar
gspfunk gspfunk is offline
Junior Member
 
2007 Chevy TrailBlazer SS (3SS)
Silverstone Metallic 6.0L LS2 V8 AWD
Join Date: Mar 2011
Location: DFW, TX
Posts: 15
Start with burping the system, as mentioned. If that doesn’t work, check your fan clutch. Mine went out on my TBSS in the middle of the summer 2 years ago. Ran ok @ highway speed since it was enough to keep it under control, but in traffic, it shot up.
__________________
07 Silver AWD TBSS - 08 Silver GC SRT8
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum forums, you must first register.

Please enter your desired user name, your email address and other required details in the form below.
(Only letters, numbers, dashes and underscores are permitted for user names)
The user name that you choose is permanent and can never be changed.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Location
Where you live (ex: Philadephia, PA)
Vehicle Year
Choose your year
Or enter your choice here:
Vehicle Color
Choose your factory color (Custom, Not Listed & Two-Tones; Use Text Field Below)
Or enter your choice here:
Vehicle Make
Choose your make
Or enter your choice here:
Vehicle Model
Choose your model
Or enter your choice here:
Vehicle Engine
Choose your engine
Vehicle Drivetrain
Choose your vehicle drivetrain
Security Question
Fill in the blanks: Tra___oy
Insurance
Please select your insurance company (Optional)

Log-in



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


» Sponsors

Advertising Info

All times are GMT -4. The time now is 05:09 AM.


Chevy TrailBlazer and GMC Envoy Enthusiasts - Copyright 2004 - 2009 All Rights Reserved.
All trademarks referenced herein are property of their respective owners.
RSS Feed