TrailBlazer 4WD V8-6.0L (2007)
Harmonic Balancer - Crankshaft Pulley: Specifications
Crankshaft Balancer Bolt
Installation Pass to Ensure the Balancer is Completely Installed ........................................................................................................ 330 N.m (240 lb ft)
First Pass
Install a NEW Bolt After the Installation Pass and Tighten as Described in the First and Final Passes .......................................... 50 N.m (37 lb ft)
Final Pass ........................................................................................................................................................................................................ 140 degrees