2024 Trail boss, 3.0 Duramax, 10 spd automatic and 4WD (G80 SU7 Differential)
I started looking thru all the old posts on issues Trail Boss Members had and found one that stuck in my head from PHXPHOTOG on a misadventure in Moab concerning rear diff problems. I too will travel to Moab this fall.
His original fix was a custom skid plate setup. Then later posts this summer noted that the AEV skid plates were now available for the Trail Boss.
I found my local Desert Rat shop and ordered up a
AEV#56060004 AA. Which turned out when attempting to order on AEV’s site did not exist, but when found on amazon, we were sent to the Same AEV website and part number and photos popped up…………..Ah technology and search engines.
I figured I would pickup a ARB or AEV nodular diff cover to go with the new AEV Skid plate to add just a bit of overkill…………….and this is where my search started. No one listed a nodular iron cover for my 2024 Trail Boss.
I was asked which diff I had, My RPO said G80, had to scan the decal QR on drivers door sill area to get that. Then the question was a SU7 or 8? That was not in the QR scanned codes……………visited my dealer, they told me I had a G80…………….never heard of the SU7 or 8.
Called my local 4x4 folks , nope G80…………………Finally found Jay, the tech at Yukon , who pulled up my Vin #, found the Su7 code, explained the difference between a GM 9.5/9.7 G80 Eaton and a AAM 9.5/9.7 Eaton…………
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FYI, Still haven’t found a nodular iron cover for a SU8 GM built diff
I ordered up a nice nodular Iron
Yukon cover Part #YHCC-GM-9.5 12B, a gasket, 3qts GM factory diff fluid and set about install all the parts today.
Cover was a breeze, The AEV skid plate fit fine but the front bracket at the driveshaft area needed some minor grinding to fit the casting and the U bolts needed some clearance at the wire loom carriers to fit without pinching.
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All in all a worthwhile addition to the Trail Boss and definitely solved the problem with peeling the stock cover on the slightest rock or tree limb!
Took longer to find the parts than the 1hour to install.
Ready for some trail rides.
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