2007 Tahoe LT 4WD G80 Rear End Rebuild/Replacement

[cbohannon25]

I just got news from my local shop (which i do trust) that my rear end is on it way out(i took it to them for a rotational noise and thought it may have been my tires). They quoted me 500 bucks to remove and replace the rear end and 1500 for a good used one. Prices i see online confirm it to be about that price from commercial parts breakers. I was thinking i could find one on FB from someone breaking parts for much cheaper than that. My tahoe is a 4wd 3.73 gear g80. Is the rear end specific to a 4wd or i just need to find another 3.73 g80 from a 2wd if thats even a thing? Is there an easy way to tell what rear end it has? I know there is a code in the glove box for G80 but wasnt sure about the gearing. Truck only has 155k miles and before I got it it was 1 family owned from new.

 

[swathdiver]

I just got news from my local shop (which i do trust) that my rear end is on it way out(i took it to them for a rotational noise and thought it may have been my tires). They quoted me 500 bucks to remove and replace the rear end and 1500 for a good used one. Prices i see online confirm it to be about that price from commercial parts breakers. I was thinking i could find one on FB from someone breaking parts for much cheaper than that. My tahoe is a 4wd 3.73 gear g80. Is the rear end specific to a 4wd or i just need to find another 3.73 g80 from a 2wd if thats even a thing? Is there an easy way to tell what rear end it has? I know there is a code in the glove box for G80 but wasnt sure about the gearing. Truck only has 155k miles and before I got it it was 1 family owned from new.

There are codes on the axle tube that tell you how it was originally equipped. The easy way to tell is to spin the tire once around and count the rotations of the yoke.

For all that money quoted you could rebuild the whole thing with money leftover for a steak dinner or two.

Now, what specifically is wrong with the axle? Pinion bearing? Spider Gears?

You want to source an axle from the same generation vehicle (2007-2014), the older 800s have a narrower track width and most do not have the speed sensors for active brake control.

You can have my old axle but it is 3.42 gears.

My running boards used to look like yours until I put splash guards behind the tires. No more slips and falls.

RPO Codes:
3.08 = GU4
3.23 = GU5
3.42 = GU6
3.73 = GT4
4.10 = GT5

 

[PG01]

I just got news from my local shop (which i do trust) that my rear end is on it way out(i took it to them for a rotational noise and thought it may have been my tires). They quoted me 500 bucks to remove and replace the rear end and 1500 for a good used one. Prices i see online confirm it to be about that price from commercial parts breakers. I was thinking i could find one on FB from someone breaking parts for much cheaper than that. My tahoe is a 4wd 3.73 gear g80. Is the rear end specific to a 4wd or i just need to find another 3.73 g80 from a 2wd if thats even a thing? Is there an easy way to tell what rear end it has? I know there is a code in the glove box for G80 but wasnt sure about the gearing. Truck only has 155k miles and before I got it it was 1 family owned from new.




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I just paid 300 for a good used rear from a jy. Just saying. Mine is a 2013 3.42 g80. Bought my tahoe new and its been through my family. My middke daughter is the one that did it in…. Lol
If you are 4wd yes you need to match the gears you have.
Took me a few hours to remove replace the rear without foing anything but a straight swap.

 

[Joseph Garcia]

You could replace it with a used one from a salvage yard, and keep the original as a rebuilding project, in the event that the replacement fails. That is what I did with my front differential. The rebuild would be fairly straigtforward, if you know someone who can set the gear pressures for you. Or, you can shop around a bit and see if you can get a better rebuild price from another shop, and just drop off the unit to them and save the R&R cost

 

[West 1]

The 2009 and newer rear axles used larger pinion bearings, should last longer if well cared for.