Offroad Trailblazers and Envoys

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Various Vehicle Specs.

4.2L 5.3L Years Details

.: Torque Specs :.

Lug Nuts X X 02-09 105 lbs/ft
Brake Caliper Front Bolts X X 02-09
CV Axle Nut X X 02-09 103 lbs/ft
Wheel Hub and Bearing Mounting Bolts X X 02-09 77 lbs/ft
Outer Tie Rod X X 02-09 33 lbs/ft
Inner Tie Rod X X 02-09
Upper Control Arm Mounting Bolts X X 02-09 111 lbs/ft
Upper Ball Joint Pinch Bolt X X 02-09 30 lbs/ft
Lower Control Arm Front Bolts X X 02-09 192 lbs/ft
Lower Control Arm Rear Bolts X X 02-09 177 lbs/ft

.: Fluids :.

Engine Oil 7 qt 6 qt 02-09 5W/30 Fully Synthetic
Engine Coolant 10.8 qt 12.2 qt 02-09 50/50 mixture of clean, drinkable water and use only DEX-COOL® Coolant.
Transmission Fluid 5 qt 5 qt 02-09 DEXRON®-III Automatic Transmission Fluid
Transfer Case Oil 2 qt 2 qt 02-09 GM Autotrak II (blue stuff only!)
Front Differential 1.7 pt 1.7 pt 02-09 SAE 75W/90 Fully Synthetic
Rear Differential 3.6 pt 4.3 pt 02-09 SAE 75W/90 Fully Synthetic

.: RPO Codes/Options :.

Axle Gearing X X 02-09 GU6 = 3.42 GT4 = 3.73 GT5 = 4.10
Rear Locker X X 02-09 G80, means you have the OEM locker
150 Amp Alternator X X 02-09 KG4, means you have this stock

Time for 2016 Calendar Submissions!

Its that time again, we are looking for your photos to fill our offroadTB calendar for 2016. Submit your photos in the thread linked below:

Requesting Calendar Photo Submissions!

We’re putting together ORTB’s 2015 calendar and we want YOUR picture. Please submit them in the forum by following the link below!

Radflo Group Buy!

Radflo has teamed up with Wheeler’s Offroad to offer us an incredible one-time group purchase of specially valved Trailblazer coilovers. With 10 buyers, we can get $200 off the list price, at $796 a set. Do not miss this incredible one-time group purchase that will take place in November of 2013. Details can be found here:

Welcome Rock Auto!

I’d like to welcome a new vendor to offroadTB, Rock Auto! I’m sure that most of us are very familiar with their services, so I can only hope that we can continue to support them, and they will do the same in return. You can find their forum section by following this link: