HI Mooseman!
Thanks greatly for the access to TB repair manuals. Enclosed please find Schematic for 2004 TB.
Would the 2004 Schematic work for 2002 (myTB)?
Is there a reading power windows schematic for Dummies? Or could you please get me started so I can probe if the window problem is ground or short or both?
Welcome to GMT Nation...
Download, Save ...and Plunder the GM OEM Service Manual for your Particular SUV and isolate the Door Lock-Window Control Wiring Diagram(s) so you have a working Baseline to observe and Probe the Power and Ground Leads...HERE:
********* Please note that the FireFox browser has issues with the password handling and that these downloads are not under HTTPS, flagging them as security risks. Chrome and Edge work fine once you allow the download. ********* ATSG 4L60E Manual 4L60E Rebuild Manual 2005 GMC Envoy XUV...
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@MAY03LT Covers problems with Door Locks on his 2003 Chevrolet Trailblazer:
Also... even though these Two Videos cover a Different GM Vehicle... The VOP (Video Original Poster) covers the R&R, Tear Down and Troubleshooting and DMM Probing of the Door Switch Control Module that may give you some additional insights for your situation:
Hey Moosman:
Thanks greatly for your time in sending the above, Thanks to you I downloaded the service manual schematics 2002-2004 TB. Eventhough the schematic indicates 2004 I'm sure the diagrams apply to my 2002 TB?
I will try again to send you a photo of the schematic page. For some reason, it's not downloading to photos?
Unfortunately, I'm still in square one, it's very difficult to understand the wiring for the front right passenger door. As you know I did the swap from PSDM to DDM window( motor and relay), checked the circuit breakers, relays, fuses each worked fine. Checked for a short in the fuses with a voltage light grounded to the battery. Power lock works, Power lock, and mirror works from driver door module, driver side to passenger side and ps module lock works from the passenger side.
Yet, no power to the window. The PSW does not go up or down. When the power window button is pressed from the driver side module you can hear an audible subtle click sound coming from the passenger side module. The power door lock works on the passenger door module.
I do not know how to operate a GM Tech 2 to locate the problem.
A wild guess leads me to the problem being lack of ground or a short or both?
Obviously, if everything else works then it must be a ground/short problem?
I was thinking of splicing the spare door harness (sent pictures of both) to the present one? Would that work?
Or is there a way I can set up a provisional fix, for example, a jumper wire to feed ground to the passenger door window connector? Maybe, that will power up the window?
Years back I had a similar problem with another vehicle. I observed the tech guy wire up to a hot wire and bingo problem solved in under 15 minutes?
Nevertheless, I'll continue to struggle in reading the wiring diagram. If you know of a how-to read auto schematics for Dummies resource please let me now, I'd appreciate it!
Best regards,
Rockridge007