Rear Replacement Shock "codes" - AC39, AB8L, etc.

[FLJAR]

'15 Yukon Denali; replaced front struts for $1500 last fall. Now rear shocks going bad. Not paying $650 each + labor for the dealer to fix. Found them online for around $350 each. BTW - Z95 Magneride.

Part number is 84176675 but all the OEM part websites have a GM note to "order by code" - I've seen the code AC39 and AB8L --- same part number (84176675). Anyone know what this code is and what it means? Not an RPO code. I called a couple of dealers they were clueless but said as long as the part number is the same, they'll fit.

I found them on CarID for $310 after 5% off but they are AC39. My current shocks have a sticker that say AB8L.

Anyone know?

 

[TheEngineer]

They are correct, as long as the part number is the same they will fit.
Code AB8L is for Magneride & Air (580-1106) approx $300

NOTES:
AB8L AC Delco 580-1106
https://www.stockwiseauto.com/acdelco-580-1106-shock-absorber?Year=2015&Make=GMC&Model=Yukon

GM Part#: 84176675 Description: Escalade ESV. Yukon. Code: ab8l. Magneride package.
Alternate/OEM Part Number(s): 23151122, 5801068, 5801100, 5801106


The following requires a Z95 bypass kit
There are many rear shocks that fit the rear of your Yukon
You could retain auto level with a NON magneride air shock.
Code AB6x is for Air NON magneride (540-1675) approx. $140

Other AC Delco rear NON magneride NON Air Alternatives for 15 Yukon
560-940
560-943
540-1653
540-1661