I cleaned the TCCM contacts, then was ready to hear it click, but alas, the four HI and four LO lights flashed when I tried to interact them. Rats! Move two, checked every one of the fuses.. All Alright, then found a damaged actuator vacume tube broken near the actator alone.
Oh, the click you hear is, most-likely, the relays from the TCCM trying to shift into 4Lo. In case you arrive at a quit As you hear that, you’ll most likely shift into 4Lo (your speed has to be less than 3MPH or 5KM/H to shift into 4Lo and it is why it keeps clicking while you drive — it attempts to change for 30 seconds, then presents up).
Unfortunately, attending to the vacuum change is usually a dilemma, while you have found. I don’t choose to say “yeah, begin ripping things apart†as I can't definitely response that problem — only you will know In case you have the potential to disassemble factors and be able to set them back with each other. If you are feeling you are able to take away a distributor cap, etcetera. and put them back again just after, Opt for it! You’ll help you save you lots of $$$ undertaking it by yourself.
If you DO NOT listen to the “simply click-click onâ€, you do have a terrible relay from the TCCM. The excellent news — you can get a alternative relay at your neighborhood electronics keep and switch it from the TCCM. You may need a soldering iron and many essential electronics skills, but it's very effortlessly accomplished (two or three points to unsolder and afterwards resolder The brand new relay set up).
Hi Les — I’m intending to really have to say no as Raymond not has them — all over again, I apologize for not backing them up.
It appears like the vaccuum is coming from a module over the transfer scenario but I used to be not sure the way it all labored jointly. Anyone have any recommendations? I don’t Have a very support guide for your truck, but am not against getting 1 if it's a great portion on hassle capturing the 4wd technique.
Regrettably, I don’t have any real experience with the service 4WD light. As I stated to my visitor below (just the buy I answered the posts), it always implies a dilemma throughout the transfer circumstance — difficulties codes need to be set, so that you might require to obtain it scanned by your mechanic.
It’s really difficult to explain to with out being able to put my fingers on it. Nevertheless, you may also want to examine the encoder motor sign strains (C26 by way of C28 on the pinout from the very first publish) — they must be higher (+5VDC) when the are not in use (resistors pull the traces higher), and reduced when they are active (known as “Lively reducedâ€). All schematics are posted in the initial article of the thread.
Feels like your transfer case gears are worn — I just had mine replaced with hardly any hours on them.
Sherry claims: September 22, 2008 at three:fifteen pm url I actually desire I found your web site ahead of I replaced my tccm. I are in Canada and my 4wd stopped working. I've a 2003 blazer and where I live 4wd can be an complete need to. I took it to some store and they may not find out the trouble, so then I took it for the dreaded vendor. They gave me a estimate of $1800.00 to replace my encoder motor and transfer case control module. I certainly couldn't afford this so I took the estimate and located the sections on ebay, then I took it to the very first store and paid them $200 to put in every thing.
You could take a look at the vacuum swap (not surprisingly, after you get to it) by taking away The 2 hoses with the change and connecting them collectively — Should the cable moves to have interaction the passengers aspect hub, the vacuum change is bad. If you really don’t want to switch the switch, you will get a woman/woman hose adapter and be part of those hoses jointly (front hub will ALWAYS lock immediately after doing this).
We now have 4WD. My spouse is impressed with me and my hat is off to you sir. You saved us big time. Will gladly fund your retirement account for what you might have saved us. Let me know the way.
PS – I really hope I’m not way off foundation here and sending you on the wild Goose chase, nevertheless it’s really hard after you can’t begin to see the car or truck.
Now appropriate near drivers hood hinge You can find a few vacuum tee’s and just one has a short piece of hose managing to the fender which has a screw in it. My dilemma is must there become a resevoir to the motorists fender place where this line must have went to? There isn't any way that GM set a sheetmetal screw in it. My Good friend provides a 95 blazer and there's a resevoir un The underside of hood. What am I lacking. I can send out photos if needed. Thanks upfront Shawn