My 2 wheel drive would engage but not my four. I examine the tccm and the vaccum change also to my specific amazement the vaccum line experienced broken off the change. I fixed this situation and now my four wheel drive is Performing again. The data you posted saved me a trip to your seller!!!
What it looks like is you could have an encoder motor dilemma — This is actually the motor around the side of the Transfer Situation that controls the shifting of the various “modes†(2Hi, 4Hi & 4Lo).
I checked the wiring harness behing the passenger kick plate and it is ok and in tact. The wires are all producing contact.
Raymond Dunne says: January seven, 2008 at ten:27 am Effectively immediately after alot of your time on my 2001 Jimmy 4wd system I am even now stumped. Began with a clicking sound from entrance finish so I checked vacuum actuator and it’s doing it task given that I loosened up the cable. Truck will not go into 2hi or 4lo so I pulled the Management module and checked wiring. Significant orange wire on electricity connector was protected in corrosion and a person wire on 32 pin connector was corroded.
Lousy connections anyplace alongside the route will trigger problems — most situations intermittently, which are an actual PITA to find. (See my higher than posts for resolving this issue.) The TCCM might be undesirable at the same time.
My initially problem could well be, what are the lights about the sprint performing (the 4wd pushbuttons)? And 2nd, what 12 months of auto are we talking? (I’m also assuming we’re continue to talking about a Chevy Blazer.)
PS – the flashing switch lights reveal the program is trying to talk to the remainder of the method. When it stops, this means it could not communicate with part of the method.
As for your trouble — I have noticed that at the same time — to not the extreme that you simply state, but I have found which the Blazer runs amazing when at idle and/or very low speeds — about the freeway you’re melting your eyebrows!
Apart from that, it’s doable that you acquired a bum encoder from your components store, but how probably can it be genuinely? Attempt what I've explained earlier mentioned and submit back in this article if things however aren’t Performing as they must and we’ll see what else we will think of then.
At the final location I tried, I did locate a woman connector that might do the trick… it just didn’t possess the tab to carry it in the leading connector (Each and every individual wire clips into a location in the key connector).
Certainly, your TCCM could be undesirable, in addition to obtaining actual troubles in the ATC by itself. That’s the issue with programs such as this — it might be Just about just about anything.
Lower the vehicle. After you decreased the car to the ground, push down on the vehicle earlier mentioned Each individual wheel a handful of situations to enable the car or truck to settle.
On chatting to a few yards, they apparently choose these modules out ($$$$$$$) and easily Minimize the connector off and sell it Using the module. So, that actually only leaves me into a scrap lawn that permits you to wander close to… and haven’t taken off the module… don’t wanna go there.
That which you describe sounds like the ported vacuum wheel alignment near me swap (Notice: this swap is only on 1999 and up autos). I’m not sure on the “hearing something functioning†— Exactly what does it sound like?