Rear trunk latch quit on my 2003 Trailblazer - Hot Rod Forum : Hotrodders Bulletin Board -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Electrical
User Name
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 09-19-2012, 09:26 PM
Registered User
Join Date: Sep 2012
Posts: 8
Wiki Edits: 0

Thanks: 5
Thanked 0 Times in 0 Posts
Rear trunk latch quit on my 2003 Trailblazer

The rear electrical trunk latch stopped working. I did not see a dedicated fuse in the manual. If I hook a VOM to the elec. contacts and press the unlock keypad and get a voltage spike it would mean that the selenoid is bad. If no voltage the wires are bad. Correct?

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 09-20-2012, 06:12 PM
vicrod's Avatar
life is a ride

Last journal entry: 2014
Last photo:
Join Date: Nov 2005
Location: Telford, PA
Age: 74
Posts: 1,545
Wiki Edits: 0

Thanks: 3
Thanked 99 Times in 94 Posts
not that simple

This is general response not specific to that model.
If you get a 12 volt pulse at the wiring connector at the solenoid it is likely the solenoid is bad. Verify this by connecting an ohmmeter to the solenoid. If you get no reading through the solenoid (coil) that would confirm a bad solenoid.
If you do not get a 12 volt pulse at the solenoid wire connector there are a number of things that could be wrong.
This is likely a computer controlled device that is disabled under certain conditions. For example: car in gear, trunk lid open (bad switch) or security system activated etc.
The circuit is fused and could be combined with some other devices like power door locks.Testing the fuses requires a test light or meter. A shop manual will help. Leading Source of Factory Automotive Repair Information
Wires very rarely go bad but the connections do.

Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 09-20-2012, 07:38 PM
EOD Guy's Avatar
Registered User
Last photo:
Join Date: Aug 2010
Location: Alabama
Posts: 2,906
Wiki Edits: 0

Thanks: 3
Thanked 290 Times in 271 Posts
You can verify the soleniod is good/bad by using a couple of jumper wires and testing it that way. If the soleniod is good, check the connector for 12v, if that is a no-go, check the wires where they bend at the hinge end (inside the rubber boot) and work your way back to the switch...... as Vic suggested the fuse is the 1st place to start, and it's prob tied in with the pwr door locks etc.....
Reply With Quote Quick reply to this message

Recent Electrical posts with photos

Quick Reply

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

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
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Spark Plugs on my 2003 Trailblazer Meatballs Hotrodding Basics 1 09-16-2012 05:22 PM
Pull down trunk latch freedom53 Electrical 7 01-16-2008 04:29 PM
Pull Down Trunk Latch gow589 Electrical 7 08-30-2006 11:10 AM
engine flood issue 2003 trailblazer tsw5013 Engine 1 03-02-2006 09:59 AM
2003 trailblazer engine bigging down at excel tsw5013 Engine 0 03-02-2006 05:58 AM

All times are GMT -6. The time now is 02:06 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.