I understand that the 2021+ GM SUVs have an independent rear suspension, however, it still uses a rear differential and there must be a ring gear diameter measurement for that rear differential regardless of whether it is IRS or live axle.None of the above. It's an independent rear suspension so it uses a different differential than past generations or the pickups. That said, I note that the 5.3 uses a different GM part number for the rear diff than the 6.2 and 3.0 do.
2021 Suburban 1500 3.23 Locking Rear Carrier 1142987 | eBay
6.2L REAR DIFF 3.23 LOCKING G86/GU5. No Grade - A part that has not yet been graded. C Grade - The third level quality part. B Grade - The second level quality part. It is of average miles and normal condition for its age.www.ebay.com
Max trailering package question
- Thread starter Buffalown
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While I agree with the false advertising part of this, which would definitely make me mad, $3k is nothing. In the Chicagoland area, we are $8-12k over sticker…although the new gen is amazing, I opted out and bought a used 2017 fully loaded z71 the way I wanted it with low miles and less than half the price. I’ll get the current gen off lease in a few years or when this market tanks.
Interesting. Is the description accurate? Was the 2021+ GM full size SUVs available with a 3.42 drive ratio though?
No clue, but it's the only item like that on gmpartsgiant for a 2021 Tahoe.
jforb
Full Access Member
I'm sorry - I misunderstood both the likely reason for your request and your knowledge of these trucks. Like @Fless, I've come across several sources for the parts, but none provide a definitive diameter for the ring gear. Some, like this one, list both 9.5" and 9.75" in the description for the same part. When I drill into the parts though, I see three different part numbers available for the ring and pinion portion of the kit. One for 6.2L + 3.0L, a second for the 5.3L - both listed as being for mechanical limited slip, and a third for those that have the electronic limited slip. So my guess is that the size of the ring gear varies by engine, with the 9.75" being for the 6.2 and 3.0, and the 9.5" being for the 5.3 trucks.
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jforb
Full Access Member
A step up from the older 8.5 and 8.6" ring gears
WalleyeMikeIII
Full Access Member
Actually, I think there are two P/N, one for the Mechanical Limited Slip Rear Diff, and one for the Electronic Limited Slip...independent of engine.None of the above. It's an independent rear suspension so it uses a different differential than past generations or the pickups. That said, I note that the 5.3 uses a different GM part number for the rear diff than the 6.2 and 3.0 do.
2021 Suburban 1500 3.23 Locking Rear Carrier 1142987 | eBay
6.2L REAR DIFF 3.23 LOCKING G86/GU5. No Grade - A part that has not yet been graded. C Grade - The third level quality part. B Grade - The second level quality part. It is of average miles and normal condition for its age.www.ebay.com
StephenPT
Full Access Member
Short article - but this is a press-release from the manufacturer (AAM) of the rear axle for the T1 platform and it lists both the 9.5" and 9.76" ring gear sizes.
www.aam.com
AAM Supplies New Independent Rear Drive Axles for GM Full Size SUVs
AAM is a premier, global leader in design, engineering, validation and manufacturing of driveline, metal forming, powertrain, and casting technologies. Stay up to date on our recent news.
www.aam.com
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