New member here! 6.2 Tahoe diff Id help

[62Towhoe]

Hello GM buddies.

Little intro, I've had my 09 6.2 ltz hoe for couple years now and I love her to death but the 3.42 gears are bugging me a lot towing. Hunting 4-5 while pulling my tow hauler makes me feel bad for the tranny.

I was happy to find the rear is a 9.5 14sf and would assume the front is 8.25 but not positive it isn't the 9.25 (one can dream right?)

It's tough to find solid info on this rig since the 6.2 hoes are not very common.

Any quick visual id marks you guys are aware of?

Cheers!
-Tyler

 

[Doubeleive]

@swathdiver

 

[swathdiver]

Hello GM buddies.

Little intro, I've had my 09 6.2 ltz hoe for couple years now and I love her to death but the 3.42 gears are bugging me a lot towing. Hunting 4-5 while pulling my tow hauler makes me feel bad for the tranny.

I was happy to find the rear is a 9.5 14sf and would assume the front is 8.25 but not positive it isn't the 9.25 (one can dream right?)

It's tough to find solid info on this rig since the 6.2 hoes are not very common.

Any quick visual id marks you guys are aware of?

Cheers!
-Tyler

The front is 8.25". It's up to the task of towing and even playing a bit with lower ratio gears. What is the weight of the trailer and has the engine and transmission been tuned?

 

[Miami-Dade]

Welcome from Miami Beach Tyler!

You are one of the lucky ones to own a 2009-6.2 Hoe!

 

[62Towhoe]

The front is 8.25". It's up to the task of towing and even playing a bit with lower ratio gears. What is the weight of the trailer and has the engine and transmission been tuned?

Thanks! I figured it was the 8.25 but need to know before I buy the ring and pinion. It's all pretty much stock but with 275/60/20 tires which doesn't help.

Trailer gross is 7500 but it tall af and is a parachute behind me. I'm unfortunately in the ****** land of California so tuning is out the window now.

I'm thinking 4.10 should give me the boost I'm looking for and keep Normal highway cruising rpm reasonable.

 

[62Towhoe]

Welcome from Miami Beach Tyler!

You are one of the lucky ones to own a 2009-6.2 Hoe!

Thanks, I spent over a year searching for her. Was the only rig I could find that fit in my parking requirements could tow and had enough seats. Heard there was something like 700 ever made which I had no idea was that rare until recently.

 

[swathdiver]

Thanks! I figured it was the 8.25 but need to know before I buy the ring and pinion. It's all pretty much stock but with 275/60/20 tires which doesn't help.

Trailer gross is 7500 but it tall af and is a parachute behind me. I'm unfortunately in the ****** land of California so tuning is out the window now.

I'm thinking 4.10 should give me the boost I'm looking for and keep Normal highway cruising rpm reasonable.

BlackBear tunes are undetectable.

Ok, so at that weight, you'll of course be using Tow/Haul mode, if she's still hunting for gears, use M4, that's just about 2900 at 70 mph. 4th is maximum cooling so it's ok to run there all day long. 4.10s will deliver 2568 rpms in 5th at 70 mph. Should be plenty of torque.

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

You are already receiving sage advice from the knowledgeable folks on this Forum.

Lots of our California members on this Forum have tunes.

I would recommend a Black Bear Performance tune, which will run in the neighborhood of $600. This tune will modify your ECM and also your TCM (so that shifting performance will also be improved, which can make as much a difference in performance as the ECM tune). And with this purchase, you will be able to obtain future tune adjustments through your AutoCal for a nominal fee for the life of your truck, whenever you make a mod for which a tune adjustment would be appropriate (cam, headers, CAI, tire size change, etc.). You can obtain the tune totally remotely with BBP, and I would suggest that you call @BlackBearPerf and discuss your needs with them, specifically what your towing situation is. Don't think of it as a one-time purchase from a vendor, but rather, think of it as building a long-term relationship with a vendor, who will be at your service for your tuning needs for the life of your truck. You won't be disappointed. A good tune is the best performance mod you can make for your dollar, IMO.

 

[OR VietVet]

Welcome to the forum. Pics please.

 

[Dantheman1540]

The good thing about the 3.42s is that if you end up hurting the factory rear 8.6" axle, a similar year 9.5" 14bolt will bolt right up with no gear changes. I agree with the others try a tune first for sure!