Source for wiring diagrams? - Blazer Forum - Chevy Blazer Forums

Go Back   Blazer Forum - Chevy Blazer Forums > Mechanical & Maintenance > Lighting & Electrical

LinkBack Thread Tools Search this Thread
Old 08-23-2012, 01:52 PM
New Member
Join Date: Aug 2012
Posts: 2
iceman53 is on a distinguished road
Default Source for wiring diagrams?

I am having problems with a 2003 Blazer involving the warning lights in the instrument cluster. Wiring Diagrams of : power routing, grounding locations under the dash, fuse block to radio connections. tach, speedo,and gauges
don't work, while all warning lights are illuminated. this is my first post so
if I am not doing something right please forgive Me.
Reply With Quote
Old 08-24-2012, 01:31 PM
New Member
Join Date: Aug 2012
Posts: 63
Presti7 is an unknown quantity at this point

Using the search,

this guy had the exact same problem- turned out to be ignition switch plus something else:
2003 blazer, no displays, radio, and car will not start now

this guys 2003 had similiar problems and it was the computer shorting out a relay :

2003 Blazer: Won't start, Power shuts off, Won't Release Keys for 5 Minutes, etc.

Here is a TSB from GM about losing your dash instrument cluster:

Sorry I don't have a wiring schematic for a 2003. Alot of searching and you'll find them piece by piece. The Haynes manuals don't have much for wiring schematics, only the dealer service/wiring manuals you buy from GM.

Good luck!
Reply With Quote
Old 08-27-2012, 10:00 PM
New Member
Join Date: Aug 2012
Posts: 2
Ramisclend is on a distinguished road

Would you have a wiring diagram for the 2001 blazer LS 2 wdr with the top glass window section separate bottom rear door. Would the diagram indicate if the tmier is separate from the defogger controller? Thanks in advance for any assistance you could provide
Reply With Quote
Old 09-05-2012, 06:06 PM
New Member
Join Date: Aug 2012
Posts: 2
iceman53 is on a distinguished road
Default Found it.

The cause of all my problems was a loose connector on the dash cluster.

Pin A9 was wallowed out.I re-crimp it and all's well. I found the wiring

diagrams I needed to at $19.95 for a manual that covers 1994

Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
source for wiring diagrams rick1toknow 1st Gen S-series (1983-1994) Tech 3 11-24-2014 10:54 AM
Help on two 86 K5's, Trans, & Wiring source Dolt_Dodger Full Size K5 Tech 3 12-05-2013 12:27 PM
Wiring Power inverter to ignition source Unlimitedsp Audio/Video Electronics 0 09-21-2012 12:52 PM
Wiring diagrams/remote start - keyless entry Greed 2nd Gen S-series (1995-2005) Tech 9 12-11-2008 12:31 AM
Wiring Diagrams chevyrocksu 2nd Gen S-series (1995-2005) Tech 9 01-03-2007 03:04 PM

01, 1987, 2003, balzer, blazer, chevy, cluster, computer, diagram, diagrams, forum, ground, instrument, schematic, window, wire, wiring

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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


All times are GMT -5. The time now is 08:57 AM.