Offroad Trailblazers and Envoys

What differential is this? So confused.....

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

by HARDTRAILZ » Tue Jan 21, 2014 2:37 pm

mikekey wrote:This is interesting to me personally. I had a suspicion the Saab had the same axle as the SS.


They do not except for the Aero.
I hate to advocate weird chemicals, alcohol, violence or insanity to anyone...but
they've always worked for me.
User avatar
HARDTRAILZ
Moderator
 
Posts: 6342
Joined: Sat Sep 12, 2009 1:49 am
Location: IN, Batesville
Name: Kyle
Vehicle Year: 2006
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD w/ Aftermarket Locker
Rank: Extreme Offroader

by TBYODA » Tue Jan 21, 2014 2:38 pm

Would also be nice to get some side pictures of the carrier with some measurements from the drive shaft side to back cover, side to side. Maybe we could convince Erik or Kyle to craw under there TB and take some measurement. Because if this information is in fact true that Saab 4.2l had a 8.6 axle that open's up bunch of options because I have seen a lot of then. Razor what motor did the VIN say it had?
2008 TB Radflo coil overs, Z71 rear springs, 2" spacer, skyjacker N8030 shocks, LT285/75R16E Goodyear MTR

My Build ----- MY Youtube Channel
User avatar
TBYODA
Moderator
 
Posts: 1762
Joined: Mon Apr 01, 2013 9:07 pm
Location: NY, Rochester
Name: Robert Sengillo
Vehicle Year: 2008
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD w/ Limited Slip
Rank: Offroad Rated

by HARDTRAILZ » Tue Jan 21, 2014 3:00 pm

I thought my build thread mentioned the difference in measurements from my need for shortened driveshaft, but once it is warm I can measure whatever.
I hate to advocate weird chemicals, alcohol, violence or insanity to anyone...but
they've always worked for me.
User avatar
HARDTRAILZ
Moderator
 
Posts: 6342
Joined: Sat Sep 12, 2009 1:49 am
Location: IN, Batesville
Name: Kyle
Vehicle Year: 2006
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD w/ Aftermarket Locker
Rank: Extreme Offroader

by navigator » Tue Jan 21, 2014 3:10 pm

I think most folks looking for an 8.6 want an open carrier so they can slap a no-slip in there. That is what I would have preferred.

I looked back at my receipts, emails and paperwork and there is no mention of what it came out of. It think the guy just mentioned it on the phone that it was out of a Bravada.

I just did a Car-Part search and they have a lot of the Saabs listed as options for a 5.3 TB.
Keep in mind that Kyle and Eric have the 9.5 not the 8.6. The 9.5 from the SS also came with a limited slip from what I understand. If I recall Kyle had to source an open carrier so he could swap in his locker.
"Please consider a search before posting. Folks on this site PIONEERED functional offroad use of these trucks."
The answer to many common lift questions can be found
here
My Build Thread
User avatar
navigator
Moderator
 
Posts: 4651
Joined: Wed Mar 09, 2011 10:16 am
Location: NC, Winnabow
Name: Chris
Vehicle Year: 2006
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD
Rank: Trail Ready

by HARDTRAILZ » Tue Jan 21, 2014 3:24 pm

Regulator is running one of the 9.5 too. The G86 did well for Eric and Matt this weekend. I feel better with the open carrier and lunchbox, but the SS ls seems to be pretty good.
I hate to advocate weird chemicals, alcohol, violence or insanity to anyone...but
they've always worked for me.
User avatar
HARDTRAILZ
Moderator
 
Posts: 6342
Joined: Sat Sep 12, 2009 1:49 am
Location: IN, Batesville
Name: Kyle
Vehicle Year: 2006
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD w/ Aftermarket Locker
Rank: Extreme Offroader

by jonbo2002 » Tue Jan 21, 2014 3:35 pm

navigator wrote:I think most folks looking for an 8.6 want an open carrier so they can slap a no-slip in there. That is what I would have preferred.

I looked back at my receipts, emails and paperwork and there is no mention of what it came out of. It think the guy just mentioned it on the phone that it was out of a Bravada.

I just did a Car-Part search and they have a lot of the Saabs listed as options for a 5.3 TB.
Keep in mind that Kyle and Eric have the 9.5 not the 8.6. The 9.5 from the SS also came with a limited slip from what I understand. If I recall Kyle had to source an open carrier so he could swap in his locker.

hey Chris wasn't yours the VIN I ran for you and told you it was out of a 97X and not a Bravada like the yard told you?
jonbo2002
Addict
 
Posts: 509
Joined: Fri Mar 29, 2013 8:22 am
Location: MI, Springport
Name: Jon
Vehicle Year: 2002
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD w/ G80

by navigator » Tue Jan 21, 2014 3:38 pm

you might be right.
"Please consider a search before posting. Folks on this site PIONEERED functional offroad use of these trucks."
The answer to many common lift questions can be found
here
My Build Thread
User avatar
navigator
Moderator
 
Posts: 4651
Joined: Wed Mar 09, 2011 10:16 am
Location: NC, Winnabow
Name: Chris
Vehicle Year: 2006
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD
Rank: Trail Ready

by JustliketheRazor » Tue Jan 21, 2014 3:49 pm

Here's the RPO sticker off that Saab

Got it from a local salvage yard here in Modesto, CA. Best part is his inventory guy misread it as G80 so he had no idea it was a G86.
A little mistake like that just opened up a whole can of worms here :D
Attachments
Attachment-1.jpeg
--------------
3.73 GT4 G86 8.6" Axle
PCMofNC Tune @ 91 Octane
KN CAI 57 Series
PCMofNC E-Fan
H.O. Alternator 250 Amp
9-11, 343 Always Remember
JustliketheRazor
Cruiser
 
Posts: 17
Joined: Sun Sep 15, 2013 2:53 am
Location: Modesto, CA
Name: Shane
Vehicle Year: 2007
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD

by JustliketheRazor » Tue Jan 21, 2014 4:01 pm

Some additional pictures....at work at the fire dept right now, major overtime :D so if you any requests for better pics I will get some when I get home in a couple days.
Attachments
photo 1.JPG
photo 2.JPG
--------------
3.73 GT4 G86 8.6" Axle
PCMofNC Tune @ 91 Octane
KN CAI 57 Series
PCMofNC E-Fan
H.O. Alternator 250 Amp
9-11, 343 Always Remember
JustliketheRazor
Cruiser
 
Posts: 17
Joined: Sun Sep 15, 2013 2:53 am
Location: Modesto, CA
Name: Shane
Vehicle Year: 2007
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD

by Chango » Tue Jan 21, 2014 5:15 pm

I see ZQ8 on there...I know on my s-10 that was the code for the same suspension the extreme had. Lowered like 2" from factory. Wonder why its on there too? Did they change the codes to mean different things? Or did the Saab also come with a ZQ8 option?
User avatar
Chango
Off-Roader
 
Posts: 184
Joined: Thu Oct 24, 2013 12:56 pm
Location: S.E. Michigan
Name: Chris
Vehicle Year: 2007
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD w/ Limited Slip

by navigator » Thu Jan 23, 2014 2:17 pm

just to confirm that you wanted the 3.73 gears and not the 4.10?
"Please consider a search before posting. Folks on this site PIONEERED functional offroad use of these trucks."
The answer to many common lift questions can be found
here
My Build Thread
User avatar
navigator
Moderator
 
Posts: 4651
Joined: Wed Mar 09, 2011 10:16 am
Location: NC, Winnabow
Name: Chris
Vehicle Year: 2006
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD
Rank: Trail Ready

by Trail X » Thu Jan 23, 2014 4:24 pm

Best I can tell, ZQ8 is the generic Chevy sports suspension package. Looks like its just an upgraded rear sway bar.

Upon further reading, it seems to also include a 1" drop on the trailblazer. The SS has it too.
8-) Build Thread | ExPo Build | YouTube Videos
Not all who wander are lost. -Tolkien
User avatar
Trail X
Founder
 
Posts: 9935
Joined: Mon Sep 07, 2009 10:22 pm
Location: VA, Roanoke
Name: James Downing
Vehicle Year: 2005
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD w/ Aftermarket Locker
Rank: Expedition Guide

by JustliketheRazor » Thu Jan 23, 2014 5:41 pm

Yeah I wanted the GT4, it's a rare find for the 4.10....for a guy with the GU6 I'm totally content with a G86/GT4 :D
--------------
3.73 GT4 G86 8.6" Axle
PCMofNC Tune @ 91 Octane
KN CAI 57 Series
PCMofNC E-Fan
H.O. Alternator 250 Amp
9-11, 343 Always Remember
JustliketheRazor
Cruiser
 
Posts: 17
Joined: Sun Sep 15, 2013 2:53 am
Location: Modesto, CA
Name: Shane
Vehicle Year: 2007
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD

by JustliketheRazor » Fri Feb 14, 2014 1:08 am

Just an update...

Got the axle rebuilt, changed bearings, seals, brake plates, parking brake hardware, cleaned and inspected diff carrier, cleaned housing, sanded and painted axle, and swapped axles.

Was a perfect fit and runs flawlessly :D

I neglected the diff cover though, PML makes a cover for this differential on the GMT360. So I'll be ordering that next overtime paycheck :D

Also all of us here at this station have white 2007 chevys....thought that was hilarious.
Attachments
IMG_2184 copy (1).jpg
IMG_2181.jpg
--------------
3.73 GT4 G86 8.6" Axle
PCMofNC Tune @ 91 Octane
KN CAI 57 Series
PCMofNC E-Fan
H.O. Alternator 250 Amp
9-11, 343 Always Remember
JustliketheRazor
Cruiser
 
Posts: 17
Joined: Sun Sep 15, 2013 2:53 am
Location: Modesto, CA
Name: Shane
Vehicle Year: 2007
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD

by ARC- » Thu Jun 05, 2014 1:08 am

Im really glad to Learn my 2005 97x ARC 5.3 V8 AWD has a GT4 G86 RPO code ! I still want the 4.10 though...
97x 5.3 LH6 ŘWD
SPRING LIFT ONLY ON 33"
Z71 springs!
ARC-
Member
 
Posts: 56
Joined: Wed Jun 04, 2014 11:31 pm
Location: Ca, San Diego
Name: Tony
Vehicle Year: 2005
Vehicle: Other GMT360/370
DriveTrain: AWD

by djthumper » Thu Jun 05, 2014 1:16 am

You do realize this is an off road forum. Don't you? There is another forums that covers all of the GMT line up at GMTNation.com where ou can find more info on the 97x than here.
User avatar
djthumper
Moderator
 
Posts: 2702
Joined: Wed Mar 24, 2010 6:04 pm
Location: NV, Las Vegas
Name: Larry
Vehicle Year: 2006
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD
Rank: Offroad Rated

by JustliketheRazor » Thu Jun 05, 2014 1:27 am

Clearly you didn't read the subject. It had off-road related potential.
--------------
3.73 GT4 G86 8.6" Axle
PCMofNC Tune @ 91 Octane
KN CAI 57 Series
PCMofNC E-Fan
H.O. Alternator 250 Amp
9-11, 343 Always Remember
JustliketheRazor
Cruiser
 
Posts: 17
Joined: Sun Sep 15, 2013 2:53 am
Location: Modesto, CA
Name: Shane
Vehicle Year: 2007
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD

by ARC- » Thu Jun 05, 2014 3:02 am

I know there many other forums, this being offroad (as I know, since the URL being offroadtb.com
I plan on lifting my 97x :flex dirty: and it apparently shares the same drivetrain and RPO part #s... So...until then Ill be the ugly duckling for now. Unless of course you can point out a better site for a 97x that has TB parts from various proven daily drivers.
97x 5.3 LH6 ŘWD
SPRING LIFT ONLY ON 33"
Z71 springs!
ARC-
Member
 
Posts: 56
Joined: Wed Jun 04, 2014 11:31 pm
Location: Ca, San Diego
Name: Tony
Vehicle Year: 2005
Vehicle: Other GMT360/370
DriveTrain: AWD

by djthumper » Thu Jun 05, 2014 4:00 am

JustliketheRazor wrote:Clearly you didn't read the subject. It had off-road related potential.

Who are you referring to?
User avatar
djthumper
Moderator
 
Posts: 2702
Joined: Wed Mar 24, 2010 6:04 pm
Location: NV, Las Vegas
Name: Larry
Vehicle Year: 2006
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD
Rank: Offroad Rated

by ErikSS » Thu Jun 05, 2014 10:17 pm

From reading this, can I assume that G86 simly is the code for limited slip?
Clearly it's not the "same" as the SS axle as it's a 8.6" instead of the 9.5". (10 bolts instead of 14) Both being GM limited slip G86 I would think the function to be the same, just smaller. I do beleive the Aero is basically an SS including the rear axle, engine, and trans upgrades. Recently, someone told me recently that all Envoy Denali came with V8's and 8.6 axles. Can anyone confirm this?
It's not how fast you go. It's how quick you get there. Lifted TBSS Build
User avatar
ErikSS
Lifer
 
Posts: 2044
Joined: Fri Apr 26, 2013 5:23 pm
Location: IL, Flossmoor
Name: Erik
Vehicle Year: 2008
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD w/ Limited Slip
Rank: Offroad Rated

PreviousNext

Return to Differentials / Axles