Service 4WD
#1
08-05-2013, 06:29 PM
Service 4WD
I am looking for help why my service 4WD light is lit on my 2000 blazer. I have replaced the dash switch, checked the vacuum actuator, and cleaned the connection on the TCCM. It is obvious that I am having an electrical problem so I took a closer look at my TCCM and found rust and I believe what might be oxidation. It seems there might have been water leaking in that certain area. Pictures and video are below.
Any help would be appreciated.
Here is an album of the pictures.
Video of startup
Blazer service 4WD startup - YouTube
Any help would be appreciated.
Here is an album of the pictures.
Video of startup
Blazer service 4WD startup - YouTube
#2
08-05-2013, 07:45 PM
Guest
Posts: n/a
Very common, I don't know what the design flaw is that caused them to weep up under that kick panel. If I had to guess it would be a drain hole that plugs.
The thing is kind of crazy, the cores are worth a ton of money so boneyard stuff might be hard to find. Good cleaning inside and out with marine electronics contact cleaner might be the answer.
I don't think there too hard to pop open.
Re-builts are like 100-150 with a 200 plus core charge. If you go that route I would sure go with a reputable company like rock-auto and not E-bay. The chance of the core mysteriously getting "Lost in the mail is too great"
For the heck of it I will do some searches, if I find anything of interest I'll post back.
Bet if you popped it open you might see something obvious that a soldering-iron could cure. Also if you just unplug your connectors and spray the connections with the cleaner. Leave it disconnected for like five minuets then plug it back in and cycle the key five times, see what happens. Sometimes you can get them to reset. Like old school computer and cable box repair. Un-plug and re-plug.
Sorry you use marine electronics contact cleaner.
The thing is kind of crazy, the cores are worth a ton of money so boneyard stuff might be hard to find. Good cleaning inside and out with marine electronics contact cleaner might be the answer.
I don't think there too hard to pop open.
Re-builts are like 100-150 with a 200 plus core charge. If you go that route I would sure go with a reputable company like rock-auto and not E-bay. The chance of the core mysteriously getting "Lost in the mail is too great"
For the heck of it I will do some searches, if I find anything of interest I'll post back.
Bet if you popped it open you might see something obvious that a soldering-iron could cure. Also if you just unplug your connectors and spray the connections with the cleaner. Leave it disconnected for like five minuets then plug it back in and cycle the key five times, see what happens. Sometimes you can get them to reset. Like old school computer and cable box repair. Un-plug and re-plug.
Sorry you use marine electronics contact cleaner.
Last edited by spittybays; 08-06-2013 at 05:31 AM.
#3
08-06-2013, 12:28 AM
Originally Posted by spittybays
Very common, I don't know what the design flaw is that caused them to weep up under that kick panel. If I had to guess it would be a drain hole that plugs.
The thing is kind of crazy, the cores are worth a ton of money so boneyard stuff might be hard to find. Good cleaning inside and out with marine electronics contact cleaner might be the answer.
I don't think there too hard to pop open.
Re-builts are like 100-150 with a 200 plus core charge. If you go that route I would sure go with a reputable company like rock-auto and not E-bay. The chance of the core mysteriously getting "Lost in the mail is too great"
For the heck of it I will do some searches, if I find anything of interest I'll post back.
Bet if you popped it open you might see something obvious that a soldering-iron could cure. Also if you just unplug your connectors and spray the connections with the cleaner. Leave it disconnected for like five minuets then plug it back in and cycle the key five times, see what happens. Sometimes you can get them to reset. Like old school computer and cable box repair. Un-plug and re-plug.
The thing is kind of crazy, the cores are worth a ton of money so boneyard stuff might be hard to find. Good cleaning inside and out with marine electronics contact cleaner might be the answer.
I don't think there too hard to pop open.
Re-builts are like 100-150 with a 200 plus core charge. If you go that route I would sure go with a reputable company like rock-auto and not E-bay. The chance of the core mysteriously getting "Lost in the mail is too great"
For the heck of it I will do some searches, if I find anything of interest I'll post back.
Bet if you popped it open you might see something obvious that a soldering-iron could cure. Also if you just unplug your connectors and spray the connections with the cleaner. Leave it disconnected for like five minuets then plug it back in and cycle the key five times, see what happens. Sometimes you can get them to reset. Like old school computer and cable box repair. Un-plug and re-plug.
#5
08-17-2013, 09:26 PM
Originally Posted by spittybays
tccm - Blazer Forum - Chevy Blazer Forums - Threads Tagged with tccm
Different clip but same idea.
TCCM 4X4 Chevrolet Repair - YouTube
Different clip but same idea.
TCCM 4X4 Chevrolet Repair - YouTube
Thread
Thread Starter
Forum
Replies
Last Post
parks336
2nd Generation S-series (1995-2005) Tech
11
10-25-2013 03:58 AM
Geir
2nd Generation S-series (1995-2005) Tech
0
10-09-2011 08:51 PM
drumzandrekkids
2nd Generation S-series (1995-2005) Tech
2
02-10-2006 11:24 PM
