2007 Yukon Suspension Modification

[AlexMahon]

The general consensus over the last few years is to keep the Z55 AutoRide system. Many have converted to standard shocks/struts only to switch back. I went with Arnott SK-2954 in the front (non-AutoRide); the kit has an electrical device included that "fools" the computer, eliminating the suspension warning light. I went with Arnott AS-2708 (reman'd AutoRide OEM) in the rear. Works great. I also R&R'd the old/worn OEM rear bump stops with Timbren TGMRYS4 bump stops and R&R'd the OEM rear springs (constant rate) with Dorman 929-929 variable rate springs (+35% load handling). The combination provides a firmer ride and increased tow tongue weight capacity, and relieves some of the stress on the rear Z55 AirRide shocks/air pump.

 

[AlexMahon]

P.S. earlier post: Vehicle = 2008 Yukon 1500XL SLT rear-wheel drive with 6.0L; 165,000 miles.

 

[juicyroot]

As @swathdiver stated above, your specific active shock will be determined by the RPO codes on the sticker inside your glove compartment. First, confirm that you have the Z55 RPO code. (If not, post a photo of your RPO code sticker, so that we can have a look at it.) If you do, then you need to match up the 6XX and 7XX secondary RPO codes to the shocks listed on the parts web site. Match them up, and you have identified the correct shock.

 

[Foggy]

Ive checked out Rockauto but how do I determine the exact fit Shocks; let's say I'm sticking with the OEM??

There should be an RPO sticker inside of your glovebox
It's tells you all your options. You can match up that with the descriptions of the
parts (on RA or anywhere)..

 

[juicyroot]

There should be an RPO sticker inside of your glovebox
It's tells you all your options. You can match up that with the descriptions of the
parts (on RA or anywhere)..

I posted it above but I don't understand it

 

[kbuskill]

Every code is a different option your truck came with. As an example:

Z55 = Autoride suspension
G69 = Auto leveling rear suspension (air)
G80 = Locking differential
GT4 = 3.73 axle ratio

Just to name a few.

Here is a link:

RPO Codes.com- GM option codes,GM rpo codes,General Motors options

 

[juicyroot]

Every code is a different option your truck came with. As an example:

Z55 = Autoride suspension
G69 = Auto leveling rear suspension (air)
G80 = Locking differential
GT4 = 3.73 axle ratio

Just to name a few.

Here is a link:

RPO Codes.com- GM option codes,GM rpo codes,General Motors options

 

[Foggy]

Missed that ! when on RA look for any of your codes listed for front struts, etc
Then you can convert to a monroe number or whatever brand.
The GM active susp struts are stupid expensive...
I ended up getting the Monroe 40048 for my Z55 Susp on my 2014

It'll be like a JL1, JL7 etc type of rpo code

 

[juicyroot]

Missed that ! when on RA look for any of your codes listed for front struts, etc
Then you can convert to a monroe number or whatever brand.
The GM active susp struts are stupid expensive...
I ended up getting the Monroe 40048 for my Z55 Susp on my 2014

It'll be like a JL1, JL7 etc type of rpo code

 

[swathdiver]

This is YOUR RPO sheet decoded. The 6LP and 7LP are your front strut codes.

RPO Code RPO Description
16U PRIMARY COLOR EXTERIOR, GRAYSTONE MET (05)
193 TRIM COMBINATION LEATHER, EBONY (3) (00)
19I INTERIOR TRIM EBONY (I) (00)
1SZ DISCOUNT OPTION PACKAGE
4SB PACKAGE SLT OPTION 2
6LP Description not available
7LP Description not available
A31 WINDOW POWER OPERATED, ALL DOORS
AG1 ADJUSTER FRT ST POWER, MULTI-DIRECTIONAL, DRIVER
AG2 ADJUSTER PASS ST POWER, MULTI-DIRECTIONAL
AJ1 WINDOW TINTED DEEP, ALL EXCEPT W/S AND DRS
AL0 SENSOR INDICATOR INFLATABLE RESTRAINT, FRT PASS/CHILD PRESENCE DETECTOR
AL4 SEAT RR BKT
AN3 SEAT FRT, INDIVIDUAL (NON BKT)
AP3 LOCK CONTROL, ENTRY REMOTE, KEYLESS ENTRY, START
ARS ADJUSTER RR REAR SEAT, POWER, STOWABLE
AS3 SEAT RR SUBURBAN/UTILITY
ASF RESTRAINT ROOF SIDE, LH & RH, INFLATABLE
AU3 LOCK CONTROL SIDE DR, ELEC
AXP VIN IDENT POSITION, MULTI-PURPOSE VEHICLE
B30 COVERING FLOOR CARPET
B58 COVERING FLOOR MAT, FRT & RR, CARPETED INSERT
B85 MOLDING B/S EXTERIOR, BRIGHT
BVE STEPS, RUNNINGBOARD SIDE
C25 WIPER SYSTEM RR WINDOW, INTERMITTENT
C36 HEATER AUXILIARY
C49 DEFOGGER RR WINDOW, ELECTRIC
C69 HVAC SYSTEM RR AIR CONDITIONER
C6A GVW RATING 7, 300 LBS
CE1 WIPER SYSTEM WINDSHIELD, PULSE, MOISTURE SENSITIVE
CF5 ROOF SUN, GLASS, SLIDING, ELEC
CJ2 HVAC SYSTEM AIR CONDITIONER FRT, AUTO TEMP CONT, AUX TEMP CONT
D07 CONSOLE FRT COMPT, FLOOR, CUSTOM
DF5 MIRROR I/S R/V LT SENSITIVE, COMPASS, O/S TEMP DISPLAY
DH6 MIRROR I/S FRT VAN LH & RH, SUNSHADE, ILLUM
DK8 CONSOLE ROOF INTERIOR, DELUXE
DL3 MIRROR O/S LH & RH, REMOTE CONTROL, ELECTRIC, HEATED POWER FOLDING, TURN SIG IND, LT SENSITIVE, COLOR
E52 BODY EQUIPMENT ONE PIECE LIFT GATE WITH LIFT GLASS
E61 DOOR RR LIFTGATE, POWER
EVA TEST DVT, EVAP EMISSION REQUIREMENT
FE9 CERTIFICATION EMISSION, FEDERAL
G69 LEVEL CONTROL AUTO, AIR, HD
G80 AXLE POSITRACTION LIMITED SLIP
GT4 AXLE REAR 3.73 RATIO
JAN PLANT CODE JANESVILLE, WI, USA
JD9 BRAKE VAC POWER, 17" DISC/DISC, W/VSES, 7700 LBS
JF4 PEDALS ADJUSTABLE, POWER
K34 CRUISE CONTROL AUTOMATIC, ELECTRONIC
KA6 HEATER SEAT, RR
KUP THROTTLE CONTROL ELECTRONIC
KW1 GENERATOR 160 AMP
LMG ENGINE FLEXIBLE FUEL, (GAS/ALC), 8 CYL, 5.3L, SFI, V8 OHV, CYL DEACTIVATION, IRON, GM
M30 TRANSMISSION AUTO 4 SPD, HMD, 4L60-E, ELECTRONIC
N88 WHEEL 17 X 7.5, ALUMINUM, PREMIUM
NP5 STEERING WHEEL LEATHER WRAPPED
NP8 TRANSFER CASE ACTIVE, TWO SPEED, PUSH BUTTON CONTROL
NT8 EMISSION SYSTEM FEDERAL, TIER 2 A
NZ4 WHEEL SPARE FULL SIZE, 17" STEEL
NZZ SALES PACKAGE SKID PLATE, "OFF ROAD" SPOT
QJP TIRE ALL P265/70R17-113S BW R/PE ST TL OOR
R6P CONTROL SALES ITEM NO. 15
R9N CONTROL SALES ITEM NO. 89
R9Q CONTROL SALES ITEM NO. 91
SAF LOCK SPARE TIRE, HOIST SHAFT
SLM SALES PROCESSING STOCK ORDERS
SLT EQUIPMENT 'LT' SALES PKG
T74 HEADLAMPS CONTROL AUTOMATIC, DELAY
T96 LAMP FOG, FRT
TFE SALES INCENTIVE COMMITMENT PLUS
TL1 GRILLE SPECIAL
U2K DIGITAL AUDIO SYSTEM S-BAND
U42 ENTERTAINMENT PKG REAR SEAT, SINGLE DISPLAY, REM CONTROL, AUX JACK 2-WIRELESS DUAL CHANNEL HEADPHONES
U84 ANTENNA BODY SIDE WINDOW, RADIO
UD7 SENSOR INDICATOR REAR PARKING ASSIST
UE1 COMMUNICATION SYSTEM VEHICLE, G.P.S. 1
UG1 OPENER GARAGE DOOR, UNIVERSAL
UJ6 INDICATOR LOW TIRE PRESS
UK3 CONTROL STEERING WHEEL, ACCESSORY
UK6 RADIO CONTROL RR SEAT & EARPHONE JACKS
UQA SPEAKER SYSTEM PREMIUM PERFORMANCE ENHANCED AUDIO
UVA RADIO AM/FM STEREO, SEEK/SCAN, AUTO TONE, CD, CD-R MP3, DVD, CLOCK, ETR, RDS
V1K BAR LUGGAGE CARRIER, CENTER CROSS
V54 LUGGAGE CARRIER ROOF, PAINTED
V73 VEHICLE STATEMENT USA/CANADA
V76 HOOK TOW
VFF VIDEO FORMAT REGION 1, NTSC
VGD FASCIA FRT, CUSTOM, BODY COLOR
VGE FASCIA RR, CUSTOM, BODY COLOR
VK3 LICENSE PLATE FRONT FRT MOUNTING PKG
VR4 TRAILER HITCH WEIGHT DISTRIBUTING PLATFORM
VXS VEHICLE COMPLETE
XA7 WASHER NOZZLES, HEATED, WINDSHIELD
YD3 AXLE (BASE EQUIP) FOR SCHEDULING GVW PLATE
YD5 SPRING FRONT BASE EQUIPMENT
YD6 SPRING RR, BASE EQUIPMENT
YE9 CONVENIENCE PKG COMFORT & DECOR LEVEL #3
Z55 CHASSIS PACKAGE BI-STATE REAL TIME DAMPING
Z88 CONVERSION NAME PLT GMC
ZVL TIRE SPARE P265/70R17-113S BW R/PE ST TL ALS
ZY1 COLOR COMBINATION SOLID