Converting back the Z55 Air Ride Suspension

[Joseph Garcia]

@Joseph Garcia what front suspension codes do you have?

6JK and 7JK

 

[HACK BLOCK]

The main question here is, while driving on a bumpy and/or winding road and monitoring the live data with your scanner, do all 4 dampers appearing to fluctuate on their own, particularly right versus left, as apposed to all 4 fluctuating in exactly the same manner at the same time?

Do you have a tow/haul mode on your truck, if yes, how to the actuators fluctuate in that mode?

I believe they fluctuate individually but I'll have to check again to confirm. I do know at a stop they are all at 20% and when I start driving they go down to 0

 

[Joseph Garcia]

I believe they fluctuate individually but I'll have to check again to confirm. I do know at a stop they are all at 20% and when I start driving they go down to 0

Yes, I have that as well at stops and starts.

 

[HACK BLOCK]

ok so after messing around with my tech 2. At a stop I'm at 20% or 21%, once I start moving, I'm at 0%.

each shock does adjust individually and I'm seeing the full range up to 95% so I'm guessing I'm good

 

[Weud]

Do you happen to know the part number of this connector and or a pig tail version of it.
I've tried a few junkyards in NoVa to no avail and the ones I've ordered online aren't quite right.

As luck would have it, my second order of a set of electrical connector shells arrived on one day, and the original 'lost' order of a set of electrical connector shells arrived the following day. So, I ended up with 140 electrical connector shells, when I only needed 2. But, at least I had what I needed. I assembled the pigtail assemblies needed for the front struts, using these electrical connector shells and the appropriate contact pins and 16 gauge wire.

I completed the electrical portion of the suspension conversion back to the OEM Z55 specification, and now this project is complete. Another thanks to @TollKeeper for his help in acquiring some of the required electrical connectors at the salvage yard, and thanks to all of the rest of you folks who followed this project and provided input. Very much appreciated.

My understanding is that these electrical connector shells are also used on other parts of the electrical systems for the GMT900 platform. So, if anyone is interested in having spares of these electrical connector shells, and contact pins, just let me know, and I will send them to you for free.

View attachment 349083

View attachment 349084

 

[Fless]

Do you happen to know the part number of this connector and or a pig tail version of it.
I've tried a few junkyards in NoVa to no avail and the ones I've ordered online aren't quite right.

The part number of the connector is shown in the post (see the graphic there) that you quoted. @Joseph Garcia also offers to send connectors to whomever wants a few, since he overstocked.

 

[Joseph Garcia]

I still have the connectors shown in the photos, and I can send them out to anyone who needs some.

 

[Weud]

Part was received and installed. She rides smooth gents. Many thanks to @Joseph Garcia.

 

[Joseph Garcia]

Part was received and installed. She rides smooth gents. Many thanks to @Joseph Garcia.

Thank you for posting the good results of your work. Much appreciated.

 

[Actifenpleinair]

Thank you for posting the good results of your work. Much appreciated.

Wow, interesting how my ADHD, internet connection, and time allowed me to read (and understand) this entire thread, Thanks Joe, Swath, and others.
'07 yukon denali z55, new to me at 170K w/ 4 bad shocks, bags, and blown compressor.
New compressor, rear Arnott 2408? rebuilts and front ACDelco's from RockAuto got it back to stock plush and working. Both front ACDelco's failed < 20k miles (RA warranty replaced) and things have been good since 190K,
now at 250k, an intermittent DIC service suspension warning - no codes set. (bluetooth ODBII w. Torquescan on my smartphone).
I believe swb models suspension module is INSIDE (under rear seat) vs. top of spare tire on the 'burbans and XLs.
1. Anybody discover a failed suspension module on short wb models?
2. would a questionable BCM also cause this DIC message?
3. What is best (ie cheapest) way to get Tech2 functionality
a. i have an obdII BAFX plug in to bluetooth
b. is a subscription needed?
thanks from a longtime lurker,
Lou
ps. I nursed my '04 TBlazer to 334K miles and this is the best forum discussion I've seen.

 

[ivin74]

Wow, interesting how my ADHD, internet connection, and time allowed me to read (and understand) this entire thread, Thanks Joe, Swath, and others.
'07 yukon denali z55, new to me at 170K w/ 4 bad shocks, bags, and blown compressor.
New compressor, rear Arnott 2408? rebuilts and front ACDelco's from RockAuto got it back to stock plush and working. Both front ACDelco's failed < 20k miles (RA warranty replaced) and things have been good since 190K,
now at 250k, an intermittent DIC service suspension warning - no codes set. (bluetooth ODBII w. Torquescan on my smartphone).
I believe swb models suspension module is INSIDE (under rear seat) vs. top of spare tire on the 'burbans and XLs.
1. Anybody discover a failed suspension module on short wb models?
2. would a questionable BCM also cause this DIC message?
3. What is best (ie cheapest) way to get Tech2 functionality
a. i have an obdII BAFX plug in to bluetooth
b. is a subscription needed?
thanks from a longtime lurker,
Lou
ps. I nursed my '04 TBlazer to 334K miles and this is the best forum discussion I've seen.

Only high end obd readers read suspension codes. There's a thread on this forum that shows members that have a Tech II along with their locations. You might get lucky and be close to one of the members. They can scan the suspension codes for you.

 

[petethepug]

2nd on this and to those that contributed into an engineering mind like think tank pooling more and more info together.

By the time you’re done reading a thread like this anything else that occurred in your day you wanted to forget is, pooof, gone. Good Stuff!

Wow, interesting how my ADHD, internet connection, and time allowed me to read this… is the best forum discussion I've seen.

 

[Joseph Garcia]

My understanding is that complete Tech 2 packages are no longer advertised directly on the traditional channels (China knock-offs, which are basically the only ones available these days, but work just as well as the GM original), due to 'legalities'. But they are still available, if you join the site with a login and use their Message Center to reach out to them directly.

In my case, that would be AliExpress.

@Actifenpleinair, if your truck is a 2013 model or older, the Tech 2 is for you. Pay ~$350.00 now, and save yourself literally thousands of dollars in diagnostics and maintenance costs over the remaining life of your truck.

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