Got the wrong struts?

[OBSandaNNBS]

I’ll double check all those numbers when I get to the house this evening

Whaddya know, I was able to open that link!
I think you do have the wrong shock/strut. The travel and extended/collapsed lengths seem wrong. But it looks like @915_Tahoe has entered the chat so I'll leave it to the experts!

 

[weldernotmechanic]

What's the last 8 of your VIN#

KR170401

 

[weldernotmechanic]

Whaddya know, I was able to open that link!
I think you do have the wrong shock/strut. The travel and extended/collapsed lengths seem wrong. But it looks like @915_Tahoe has entered the chat so I'll leave it to the experts!

View attachment 458139

That’s strange. I wonder why it’s says they do fit when I look them up

 

[OBSandaNNBS]

That’s strange. I wonder why it’s says they do fit when I look them up

I was thinking the same, but decided one of us must be wrong then.
I think you have sufficient cause to get your money back should you return them to O'Reilly...YOU guys sold me the wrong part

 

[915_Tahoe]

KR170401

Gm# 84977478 LH/RH
$955.44+tx each strut

 

[weldernotmechanic]

Gm# 84977478 LH/RH
$

Gm# 84977478 LH/RH
$955.44+tx

Is that for one?

 

[915_Tahoe]

Is that for one?

For each strut

 

[weldernotmechanic]

So here is a plot twist! I pulled measurements on the struts that came out of the truck. Went to oriellys and pulled measurements on a new 43gm1000ps strut. Exactly the same measurements. So I went to the local Chevy house. Pulled measurements on the 84977478 strut. It was 1/4” longer.
Old strut and the one that is in the car now, exactly the same measurements. Oriellys guy suggested that new one needs to be “relearned”. Thinks it’s an electrical issue.

 

[OBSandaNNBS]

Is that for one?

Ouch.

There is always Rock Auto. Find a 5% discount code in the thread on this forum entitled "Rock Auto discount codes"
They have them, 433 each, without the coilovers.
Which should be able to be reused.
Which should be able to be swapped by your mechanic.

There's also this. The price is for two.
Must have fallen off a truck or something...

Pardon Our Interruption...

 

[OBSandaNNBS]

So here is a plot twist! I pulled measurements on the struts that came out of the truck. Went to oriellys and pulled measurements on a new 43gm1000ps strut. Exactly the same measurements. So I went to the local Chevy house. Pulled measurements on the 84977478 strut. It was 1/4” longer.
Old strut and the one that is in the car now, exactly the same measurements. Oriellys guy suggested that new one needs to be “relearned”. Thinks it’s an electrical issue.

Holy crap, they might be right.

I did watch a video on relearning the magnaride height. Sounds like a dealer operation. I would try calling the dealers around you to see who knows exactly what you're talking about, and take it there. Or do some more research on it first.

Compounding this issue is:
The O'Reily cross reference for the GM part number does not reference to the 43gm1000 for some reason. I think it should.

 

[Badbob]

Have been lurking for a while decided to join today
I have a new to me 2016 Tahoe LTZ bought it in Florida no rust, it needs new magnetic ride shocks replaced. I plan on doing the job myself just have the springs swapped at a shop.
I have been doing quite a bit of research on the subject
The part number in question on Gm parts direct Gm# 84977478 LH/RH costs $522
On Rock auto the same part is $432
The original Gm shocks need you to remove original spring and reinstall on new shock,
They don’t sell Gm shocks with a new spring installed. Other manufacturers do though but from what I gather they don’t last very long

 

[OBSandaNNBS]

Have been lurking for a while decided to join today
I have a new to me 2016 Tahoe LTZ bought it in Florida no rust, it needs new magnetic ride shocks replaced. I plan on doing the job myself just have the springs swapped at a shop.
I have been doing quite a bit of research on the subject
The part number in question on Gm parts direct Gm# 84977478 LH/RH costs $522
On Rock auto the same part is $432
The original Gm shocks need you to remove original spring and reinstall on new shock,
They don’t sell Gm shocks with a new spring installed. Other manufacturers do though but from what I gather they don’t last very long

Welcome to the forum and thanks for chiming in! Nice Tahoe.

This is a good point, @weldernotmechanic, im betting the coils are a little thinner on your MSR unit.

 

[ReaperHWK]

Have been lurking for a while decided to join today
I have a new to me 2016 Tahoe LTZ bought it in Florida no rust, it needs new magnetic ride shocks replaced. I plan on doing the job myself just have the springs swapped at a shop.
I have been doing quite a bit of research on the subject
The part number in question on Gm parts direct Gm# 84977478 LH/RH costs $522
On Rock auto the same part is $432
The original Gm shocks need you to remove original spring and reinstall on new shock,
They don’t sell Gm shocks with a new spring installed. Other manufacturers do though but from what I gather they don’t last very long

I recently replaced all 4 mag shocks on my 2015 LTZ. Yes for OEM it’s the shocks only you need to disassemble the front struts and put in the new shocks. I did this myself it’s not hard. This spring compressor set worked well for me FYI if you want to do it yourself. This set was very sturdy and I felt very confident with them on the springs.

Amazon.com

Also, to get the top strut nut off an impact is required. Also tighten the top nut to 55 ft-lb. These sockets work well for that so you can use a torque wrench.

Amazon.com: 5pcs Strut Nut Socket 18mm 19mm 21mm 22mm 24mm with 12 Point 1/2" Drive, Suspension Strut Nut Socket Tool Easy Remove Strut Nuts : Tools & Home Improvement

Buy 5pcs Strut Nut Socket 18mm 19mm 21mm 22mm 24mm with 12 Point 1/2" Drive, Suspension Strut Nut Socket Tool Easy Remove Strut Nuts: Drive Socket Sets - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

a.co

Also when the job is all done recommended to get a scanner and do the level procedure.

 

[Badbob]

I recently replaced all 4 mag shocks on my 2015 LTZ. Yes for OEM it’s the shocks only you need to disassemble the front struts and put in the new shocks. I did this myself it’s not hard. This spring compressor set worked well for me FYI if you want to do it yourself. This set was very sturdy and I felt very confident with them on the springs.

Amazon.com

Also, to get the top strut nut off an impact is required. Also tighten the top nut to 55 ft-lb. These sockets work well for that so you can use a torque wrench.

Amazon.com: 5pcs Strut Nut Socket 18mm 19mm 21mm 22mm 24mm with 12 Point 1/2" Drive, Suspension Strut Nut Socket Tool Easy Remove Strut Nuts : Tools & Home Improvement

Buy 5pcs Strut Nut Socket 18mm 19mm 21mm 22mm 24mm with 12 Point 1/2" Drive, Suspension Strut Nut Socket Tool Easy Remove Strut Nuts: Drive Socket Sets - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

a.co

Also when the job is all done recommended to get a scanner and do the level procedure.

Thanks for the info do you have a link for scanner tool

 

[ReaperHWK]

Thanks for the info do you have a link for scanner tool

Any bi-directional autel scanner would do it. This is the one I have:

Amazon.com: Autel Scanner MaxiCOM MK900: 2025 Same as MK900BT MK900-BT MX900 Bidirectional Diagnostic Tool, 8in Up of MK808S MK808BT Pro MX808S MK808Z, 3K+ Active Tests, 40+ Service, CAN-FD&DOIP, All System, FCA : Automotive

Buy Autel Scanner MaxiCOM MK900: 2025 Same as MK900BT MK900-BT MX900 Bidirectional Diagnostic Tool, 8in Up of MK808S MK808BT Pro MX808S MK808Z, 3K+ Active Tests, 40+ Service, CAN-FD&DOIP, All System, FCA: Code Readers & Scan Tools - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

a.co

There are probably cheaper ones that would work. Look for bi-directional scanner that can comm with the suspension controller.


I also bet a dealer would charge an hour for this so probably $150 for them to do the level procedure.

 

[OBSandaNNBS]

@weldernotmechanic

See @ReaperHWK 's replies
I think he solved it for you. Do the level procedure mentioned...update when you're ok or not okay.

 

[weldernotmechanic]

@weldernotmechanic

See @ReaperHWK 's replies
I think he solved it for you. Do the level procedure mentioned...update when you're ok or not okay.

I am waiting for the mechanic to let me know when to bring it in. Got a Chevy tech that’s going to do the “relearn”. I will update when we see if that fixes it.

 

[Somec1982]

I have a 2019 Yukon Denali and the front struts have failed. I understand the OEM struts do not last. Is there a brand I should look for to upgrade?

 

[Joseph Garcia]

I have a 2019 Yukon Denali and the front struts have failed. I understand the OEM struts do not last. Is there a brand I should look for to upgrade?

IMO, you cannot really 'upgrade' from the GM suspension, as it is very well designed. If your rig is predominantly for serious off-road uses, then aftermarket suspensions may provide better results.

No strut lasts forever, as it is a wear item. In general, GM suspension last for up to 100,000 miles, but of course there are exceptions. The active GM suspension shocks/struts, like the ones that you have on your rig, are warranted for life, so if they have failed go get your replacements.

 

[Somec1982]

I didn't realize they are warrantied for life. I will see how that goes. THANKS