Offroad Trailblazers and Envoys

Axle swap purchase; quick verification

G80, GU6, GT4, GT5, WTF? This section is for gearing and driveline stuff.

by med71 » Fri May 11, 2018 5:34 pm

I just picked up a rear axle from a 2003 Trailblazer EXT GT4 G80. Based on what I read, I believe this is the 8.6 3.73 LSD axle. Please let me know if I'm wrong or anything else I may need to know when I put this in my 2003 Envoy.
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by DirtyBacon04 » Sat May 12, 2018 5:08 pm

Correct.
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by med71 » Sat May 12, 2018 10:27 pm

DirtyBacon04 wrote:Correct.


Awesome, thanks...now to get the spacers, shocks, and springs to get this thing started.
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by med71 » Fri May 18, 2018 6:13 pm

I received the axle today; I'm going through it to make sure I got what I ordered. Since I just discovered that the trailblazer 8.6 has the same diff cover as the 8.0, I couldn't tell with a quick visual inspection; I was expecting the typical round one...sigh. The only stampings I found were H330028565 on the cover and 40008140; I read somewhere that 8.6 may be stamped on it. Any ideas?
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