ZW7 suspension

[Joseph Parker]

Not sure why this is so difficult. I would like to replace all 4 shock absorbers on my 2014 GMC Yukon XL. Front code 6sh rear ZW7. Premium smooth ride. VIN 1GKS2KE7XER161824. No luck at the local parts store and I've called 3 different dealers and have gotten 3 different sets of part numbers. Through cross referencing and my own deduction... I've come up with front = 22811853 and rear = 22811845. These are gm parts numbers. Can anyone confirm that they are the correct parts? I know the rear shocks are supposed to be self adjusting (nivomat). I just don't have confidence in these parts guys.

 

[Fless]

What are your Gxx RPO codes inside the glovebox lid?

I don't believe that the NNBS ZW7 uses Nivomats, but someone else on here will know.

 

[CaptainAmerica1]

My ZW7 had nivomats…

 

[swathdiver]

Not sure why this is so difficult. I would like to replace all 4 shock absorbers on my 2014 GMC Yukon XL. Front code 6sh rear ZW7. Premium smooth ride. VIN 1GKS2KE7XER161824. No luck at the local parts store and I've called 3 different dealers and have gotten 3 different sets of part numbers. Through cross referencing and my own deduction... I've come up with front = 22811853 and rear = 22811845. These are gm parts numbers. Can anyone confirm that they are the correct parts? I know the rear shocks are supposed to be self adjusting (nivomat). I just don't have confidence in these parts guys.

If your RPO shock codes are 6SH and 7SH then your front struts are 560-707/20955487. The rears are 540-435/25871227.

The rears are not Nivomats, those were used on the GMT800s, unless you crawl under the back and see Nivomats or have G65 RPO code then they are original to the vehicle!

You ought to replace everything, and not just the shocks. Some fellas did the bare minimum and complained about the ride afterwards. The jounce bumpers and spring pads do make a difference and new springs restored my truck's ride height and stance back to original. She was sagging in the rear some.

Here's a parts list and the torque values and socket sizes are on my build page, "Useless Information". The list also includes the other suspension and steering parts and all are GM OE save for the rear coil spring ACDelco Professional number, the originals I could not locate anymore when I was looking for mine.

Front Suspension and Steering
1	Nut, Top	11561435	2
2	Mount, Shock Absorber	25869477	2
3	Coil Spring Seat	15803177	2
4	Bumper, Front Strut	20982216	2
5	Spring Insulator, Upper	15840291	2
6	Front Coil Spring	25876861	2
7	Spring Insulator, Lower	15808594	2
8	Front Strut	540-460/20765171	2
9	Control Arm, Upper, Driver's Side	25812725	1
10	Control Arm, Upper, Passenger's Side	25812726	1
11	Alignment Cam Guide Pin	45K26008	4
12	Alignment Caster/Camber Kit	45K5012	2
13	Control Arm, Lower, Driver's Side	20869201	1
14	Control Arm, Lower, Passenger's Side	20869202	1
15	Suspension Control Arm Bolt, Front, Lower	15733533	2
16	Suspension Control Arm Bolt, Front, Lower	15733534	2
17	Suspension Control Arm Nut, Front, Lower	11516133	4
18	Suspension Control Arm Washer, Front, Lower	15567836	4
19	Stabilizer Bar, Shaft Link, Front	25918049	2
20	GM OE - Tie Rod, Inner	19178561	2
21	GM OE - Rack and Pinion Bellows	15254057	2
22	GM Tie Rod, Outer	15254061	2
Rear Suspension
0	Track Bar (Panhard Rod)	22863710	1
1	Rear Coil Spring Insulator - Upper	15251980	2
2	Rear Coil Spring Set	25783733 - 45H2164	1
3	Rear Coil Spring Insulator - Lower	15765071	2
4	Rear Shock Absorber	540-435/25871227	2
5	Jounce Bumper, Rear	15115208	2
6	Control Arm, Rear, Lower	22868629	2
7	Control Arm, Rear, Upper	15767252	2
8	Stabilizer Bar End Link, Rear	15257472	2

 

[Joseph Parker]

Only codes that start with g are GU6 AND G80. GU6 = 3.42 gear and the G80 = auto locking rear diff.

What are your Gxx RPO codes inside the glovebox lid?

I don't believe that the NNBS ZW7 uses Nivomats, but someone else on here will know.

 

[swathdiver]

My ZW7 had nivomats…

Oh, that's right. Must have been a 2007 thing. Never seen them on any other. You have the G65 RPO code too, right?

 

[Joseph Parker]

Oh, that's right. Must have been a 2007 thing. Never seen them on any other. You have the G65 RPO code too, right?

There is no G65 code listed. I have the build sheet and it's not on there.

 

[Joseph Parker]

If your RPO shock codes are 6SH and 7SH then your front struts are 560-707/20955487. The rears are 540-435/25871227.

The rears are not Nivomats, those were used on the GMT800s, unless you crawl under the back and see Nivomats or have G65 RPO code then they are original to the vehicle!

You ought to replace everything, and not just the shocks. Some fellas did the bare minimum and complained about the ride afterwards. The jounce bumpers and spring pads do make a difference and new springs restored my truck's ride height and stance back to original. She was sagging in the rear some.

Here's a parts list and the torque values and socket sizes are on my build page, "Useless Information". The list also includes the other suspension and steering parts and all are GM OE save for the rear coil spring ACDelco Professional number, the originals I could not locate anymore when I was looking for mine.

View attachment 348409

Front Suspension and Steering
1	Nut, Top	11561435	2
2	Mount, Shock Absorber	25869477	2
3	Coil Spring Seat	15803177	2
4	Bumper, Front Strut	20982216	2
5	Spring Insulator, Upper	15840291	2
6	Front Coil Spring	25876861	2
7	Spring Insulator, Lower	15808594	2
8	Front Strut	540-460/20765171	2
9	Control Arm, Upper, Driver's Side	25812725	1
10	Control Arm, Upper, Passenger's Side	25812726	1
11	Alignment Cam Guide Pin	45K26008	4
12	Alignment Caster/Camber Kit	45K5012	2
13	Control Arm, Lower, Driver's Side	20869201	1
14	Control Arm, Lower, Passenger's Side	20869202	1
15	Suspension Control Arm Bolt, Front, Lower	15733533	2
16	Suspension Control Arm Bolt, Front, Lower	15733534	2
17	Suspension Control Arm Nut, Front, Lower	11516133	4
18	Suspension Control Arm Washer, Front, Lower	15567836	4
19	Stabilizer Bar, Shaft Link, Front	25918049	2
20	GM OE - Tie Rod, Inner	19178561	2
21	GM OE - Rack and Pinion Bellows	15254057	2
22	GM Tie Rod, Outer	15254061	2
Rear Suspension
0	Track Bar (Panhard Rod)	22863710	1
1	Rear Coil Spring Insulator - Upper	15251980	2
2	Rear Coil Spring Set	25783733 - 45H2164	1
3	Rear Coil Spring Insulator - Lower	15765071	2
4	Rear Shock Absorber	540-435/25871227	2
5	Jounce Bumper, Rear	15115208	2
6	Control Arm, Rear, Lower	22868629	2
7	Control Arm, Rear, Upper	15767252	2
8	Stabilizer Bar End Link, Rear	15257472	2

So now I have a 4th set of numbers. Im curious to know what years the numbers that you gave me might cover. When I look them up the latest vehicle fitment I can find is a 2010. Not saying that the part has changed but maybe the numbers have.

 

[Joseph Parker]

So as I understand it, if the G65 RPO code is not there, I do not have nivomat shock absorbers.

 

[Joseph Parker]

I

So now I have a 4th set of numbers. Im curious to know what years the numbers that you gave me might cover. When I look them up the latest vehicle fitment I can find is a 2010. Not saying that the part has changed but maybe the numbers have.

I take that back the numbers for the front do fit the 2014. So does the 22811853. Any 8dea what the difference is?