233c swap successful, no speedo and abs/parkbrake light on

[thegreenmachine]

hey guys long time no see

I recently (today) swapped in a 233c tcase as per the LiftedAWDAstro's thread. (write up to follow later)

no major hang-ups except for the no speedo and abs/park light on. the trannys gone into safe mode, and I only have 1and 2, shifting to 3 puts it back into first.

I've tried wiring all the vss sensors together, to no avail, also have swapped the vss sensor on the 233 case with 2 other used ones.

what the eff is happening

2003 awd astro

thanks shane

[T.Low]

You have to recalibrate.

Other than that, I have the same issues regarding idiot lights and 1-2 gear only. Sort of a bummer in the beginning, but not that big of a deal when using lo range during the last 5 1/2 years.

You testing at Vedder Mtn? Places to go around Chiliwack Lake?

[thegreenmachine]

plan to do a trip up vedder when I have the bugs worked out, roasted my brakes on the way down last time I went so I am really looking forward to a low range.

hows does one recalibrate?

I have all the vss sensors wired together at this point, is there one that does the speedo exclusively?

to clarify, I will not be using the electronic part of this 233c tcase. it will be converted to a manual.

kinda stumped still

[Stroverlander]

Shane, the NV136 vss sensor near the top of the output shaft housing is the vss that inputs to the PCM (speedo), the other two are front and rear driveshaft vss and input to transfer case shift module.



The air gap on on the vss to reluctor ring is critical as well. If you're getting abs/brake warning indicators then something with the vss signal/reading/calibration isn't correct.

As for shifting, I thought I read Astro 4L60E wouldn't shift gears with the transfer case is in 4LO and so a terminal on PCM needs grounding when selecting 4LO.

'01-'05 PCM Connector 2 Terminal 16

viewtopic.php?f=21&t=1940&start=15

Ok, did some more research, and I printed out the circuit descriptions and diagrams at work to share with you all. I wrote a simple diagram for the switch. There is one for 96-00 and one for 01-05.

Enjoy!

[photo_van]

Check out my write up with pics on wiring the PCM for getting all four gears in low range viewtopic.php?f=58&t=7844&start=15 It's not hard to do and sure is nice to not have to stop and put it in high range every time you hit a flat. I used a moment switch at my tc shift lever, but you could tap into the TC indicator switch or put a manual switch on the dash.

[Stroverlander]

That's a great thread photo_van, I've re-read it a few times now and you have me reconsidering the 233 for manual shift 242 now. I'm curious to see just what is interchangeable with a later model 242 and my NV136.

[photo_van]

Not to hijack this thread too much. In the mountains here, for several months we have mixed snow/ice/pavement after each storm, so I do really like still having AWD. I had read that the 242 is apita to get out of 4wd, let it be known, it's true! It takes a lot of futzing, like putting the trans in neutral, backing up etc, etc. Once you get a system figured out it's not too bad, but still not for those that don't want to have to think about it :-k

Since I had a '98, doing any 4WD tc swap was going to take a bit of work. After reading Lifted's most recent swap of a 233 that bolted right up in an '03 with NO drivetrain or crossmember mods, I think that would be hard to pass up, unless you live in an area where you'll use AWD regularly.

[Stroverlander]

Very valid point about the ease of swapping in a 233. :-k

I hope Shane is able to get this one sorted quickly so we can read about the results! =D>

[thegreenmachine]

Shane, the NV136 vss sensor near the top of the output shaft housing is the vss that inputs to the PCM (speedo), the other two are front and rear driveshaft vss and input to transfer case shift module.

.......
The air gap on on the vss to reluctor ring is critical as well. If you're getting abs/brake warning indicators then something with the vss signal/reading/calibration isn't correct.

As for shifting, I thought I read Astro 4L60E wouldn't shift gears with the transfer case is in 4LO and so a terminal on PCM needs grounding when selecting 4LO.

'01-'05 PCM Connector 2 Terminal 16

and its just that easy folks

I had the wrong sensor hooked up, re-splced it, speedo working!!!!!!

now if only I can get rid of the abs light and parking brake light..........

thanks for all your help ill report back later

[LiftedAWDAstro]

PM sent but I see you got! Awesome!

[thegreenmachine]

bit of a follow up.

the abs and parking brake lights cleared themselves after 100 feet of driving.

feels nice, smooth, and as I verified at the river, all modes work. though 4low feels faster than I think it should.

now, linkage, hopefully will be able to copy liftedawd's style, while using salvaged parts.

tires bark around corners now, I forgot how fun it is to drive 2wd through mud around a corner lol!!!!

[Stroverlander]

Good to hear no more abs/brake lights, that makes me feel better going forward!

How do you have the shifter rigged right now?

[Stroverlander]

BTW, T.Low that is still one sick van!

[T.Low]

Ha! Thanks. You ought to know: It's pretty much like yours!

Thats a picture taken on Vedder Mt in Chiliwack, Shane's home town about ahour and 10 from my house.

BTW, Shane, I'll be heading up a few times to see my buddie's kid skating for the Chiliwack Chiefs this year. Ben Butcher.

[thegreenmachine]

haven't got the shifter hooked up yet, so I guess I have it set up with a 9/16's wrench!!! downside is I have to crawl underneath to switch, luckily the loose river rock holds the van still nicely in neutral.

I hope to copy lifted's style, but after seeing how photo-van did his I might create a hybrid of a jeep/s10 shifter.

t.low let me know when you're coming up, prospera center where the chiefs play is only 2 stop signs and a right hand turn away from my house. igo to a few games a year, I usually hang out near the beer gardens lol.

as soon as peg-leg is open, I plan on taking my son down to camp for a night.

I think the wife is gonna miss full time awd though....

now to save for new catalytic converters, the smell going up hills is over bearing now..