2002 yukon xl shock options

[mountie]

My '05 Yukon XL RPO codes...... My rear shock...... coil spring label.......
I have the ZW7 " Premium Smooth Ride"..... But not the "self adjusting Sachs "Nivomat" shocks.
The coil spring part number ( You might be lucky and still have the sticker on one of your rear springs)

I do NOT have the "self adjusting shock RPO > G65 code.
So, you just saved a bunch of money..... Just replace your shocks with the OEM standard premium shock.
They perform just fine.
(( I have the Hellwig sway bar.... works together well ))

 

[Fless]

Ok...codes for yukon #2

Can't read all the "Gxx" codes. Need a complete pic.

 

[Fless]

I do NOT have the "self adjusting shock RPO > G69 code.

G69 is NOT the Nivomat shock code, it's for air suspension:

G65 is the code for Nivomats.

 

[mountie]

G69 is NOT the Nivomat shock code, it's for air suspension:

View attachment 444930

G65 is the code for Nivomats.

Opps I miss-wrote..... I edited my post....
I guess my 'G80' is my premium shocks, not adjusting...
His RPO codes look like mine in that subject. ( The hidden code to left, seems , is like me, " GU6 " ( rear axle )

 

[Fless]

Opps I miss-wrote..... I edited my post....
I guess my 'G80' is my premium shocks, not adjusting...
His RPO codes look like mine in that subject. ( The hidden code to left, seems , is like me, " GU6 " ( rear axle )

G80 is your rear axle. GU6 is the ratio (3.42:1).

You might want to stop quoting specific codes if they're just guesses. It just adds confusion.

 

[mountie]

G80 is your rear axle. GU6 is the ratio (3.42:1).

You might want to stop quoting specific codes if they're just guesses. It just adds confusion.

You are correct..... I'll shut up.... But the ZW7 options are confusing to owners.

 

[Marky Dissod]

decoderpo.com

 

[mountie]

Did GM make the RPO codes confusing on purpose??

 

[me262]

I didnt realize my codes were unreadable. When i saw zw7, i figured it was nivomat. Now im confused. I can post another photo of the codes later. So....do yall think they are or arent nivomats? Certainly not air shocks. I stood on the rear bumper and tried to bounce the vehicle. Its really stiff. But last time i towed, it bounces a lot under load.

 

[mountie]

I didnt realize my codes were unreadable. When i saw zw7, i figured it was nivomat. Now im confused. I can post another photo of the codes later. So....do yall think they are or arent nivomats? Certainly not air shocks. I stood on the rear bumper and tried to bounce the vehicle. Its really stiff. But last time i towed, it bounces a lot under load.

Take a photo of your shocks...... 1st photo are my new ZW7 'Premium Smooth Ride' ... standard factory shocks. ( regular width ). About $50.00..
2nd photo are Sachs / 'Nivomat' .. ZW7 , ' Premium Smooth Ride' 'self leveling shocks' ( self-contained / no air compressor ) , a larger width. About $400.00 (+ - )
Then there is a premium ZW7, leveling shock, with an air compressor fitting on the shock. ( I don't have a photo of that)
( My info may not be perfect, but just to give you an idea )

FLESS IS WATCHING ME...... He's better at this stuff, than, me....

If you go to the dealer, and do a parts search for your ZW7, and using your VIN #, THIS WILL CONFUSE YOU EVEN MORE.... The drawing, AT THE DEALER, is for my ZW7 premium smooth ride / STANDARD shock.....( #540-433 ) But for some silly reason, the drawing, AT THE DEALER'S PARTS COMPUTER, shows an air fitting on the shock, even though, THAT shock does not have an air fitting.....

 

[Fless]

ZW7 indicates a variation of the "Premium Smooth Ride" suspension. On the GMT800 chassis the "G65" RPO indicates the Nivomat shocks in the rear (and likely a front shock that is different from the Z71 or standard suspension). The rear springs are also softer. Take both RPO codes into consideration.

 

[me262]

Codes and shock photos

 

[swathdiver]

Codes and shock photos

Rear Nivomats for yours is 540-532 or 12477517. Springs are 15182555 or maybe 45H2165/19255625.

Front shocks look like 540-182 or 12477738.

 

[Fless]

Those pics do look like the OE Nivomats. You can replace them with like shocks (manual, self adjusting Nivomats - $$) or convert to conventional shocks if you replace the coil springs with standard or Z71 springs.

 

[me262]

Ok...i loaded the rear axle with over 300 lbs of weight. Took measurements at my hitch before and after. 13" before and 11.75" loaded. Drove it a couple miles and took another measurement. Still 11.75". Drove it another 3 or 4 miles. Measurement wasnow back to unloaded measurement of 13". Maybe nivomats are ok? Maybe my bounce is front shocks? Its worse when i have my camper attached going down bouncy road.

 

[Fless]

It does sound like the Nivomats are adjusting, it just takes a few miles for them to react and adjust.

 

[me262]

I think im going to try kyb shocks on the front. Anyone used these before? Thks!

 

[Fless]

Yes, I do. Stay away from the Excel-G bottom of the line version. I have Gas-A-Just front shocks for my ZW7 4wd suspension, and they ride the same as OE in mine.

Use the KYB catalog for fitment and part numbers: https://www.kyb.com/catalog/

 

[me262]

Yes, I do. Stay away from the Excel-G bottom of the line version. I have Gas-A-Just front shocks for my ZW7 4wd suspension, and they ride the same as OE in mine.

Use the KYB catalog for fitment and part numbers: https://www.kyb.com/catalog/

Thks! Got a pair of gas a just from rock auto. Will install this week.