Basically, I am astonished it engaged as though I recall the right way, the vacuum switch communicates With all the TCCM and usually triggers the dash switches to flash if no conversation is obtained. It's been a while given that I worked on this car while (and sold it in ’07), so I might be mistaken.
So, you’re declaring that the lights Don't flash when attempting to engage 4Hi? That’s somewhat diverse, with a couple additional small matters to examine given that the lights should really flash if the TCCM is obtaining the sign.
Yep, you possibly Possess a lousy TCCM, bad encoder motor, damaged vacuum strains, poor actuator or a challenge along with your transfer scenario — all of which has been lined inside of this thread.
Person, if it’s merely a button assembly, don’t fret — there are no electronics in the button assembly — They can be just that — buttons (switches). That means, it shouldn’t Price tag all that A lot. The most expensive aspect will be the dealers labour amount.
However, I don’t know the answers to most within your questions — I can guess, but that’s what it’s likely to be, a guess.
So, I have everything Functioning… time for the new glue. I set a dab of glue down the very best of pins #one and #six to carry them in position, Enable it set and attempted to pull them out.
With any luck ,, Additionally, it provides Other folks the encouragement / self-confidence to tackle Employment such as this on their own!
Mine would go into 4WD, each Lo and Hello, but would in some cases slip from 4WD (mainly in Hello) resulting in a loud grinding/banging sounds. When screening it in 4Lo, it might at times not go anyplace, then all of a sudden fall into equipment like Try THESE Guys Out and snap your head again (having a hell of the bang as well).
After cleansing up the corrosion on all remaining wires, and cleansing out the main connector, I stripped and attached new clips to the two broken wires and stuck them in the principle connector. OK, now I just have to have to be sure they don’t get pushed out when the link is produced… how?
Hey Doug — thanks for the knowledge! Which makes a great deal of perception — now, if we will only discover the swap! If you concentrate on it, the change you take a look at could just be the foundation of the issue for your number of individuals who’s 4WD won’t have interaction.
It Appears “electrical” to me… accordingly, the primary place I’d start out looking is at the TCCM for corrosion. Then, I’d Have a look at the schematics posted inside this thread and begin trying to find sensors.
As I'm not a mechanic, every little thing which i learn about the Blazer 4WD process has, just about, been posted below — you just need to read through.
Doesn’t seem fantastic. It feels like what I just went via — and it turned out to get the gears/forks within the transfer case. I initially seen which i experienced problem coming out of 4WD, then I started out noticing 4Hi “slipping” out and in.
I cleaned the TCCM contacts, then was capable of listen to it simply click, but alas, the four Hello and four LO lights flashed After i attempted to interact them. Rats! Phase 2, checked all of the fuses.. All OK, then located a broken actuator vacume tube broken near the actator by itself.