Fastener Specifications

2025 Chevrolet Trailblazer ACTIV, FWDSECTION Fastener Specifications
Single Use Non-Threaded Fasteners/Components

NOTE:

All fasteners/components listed in this table MUST BE DISCARDED and replaced with NEW after removal. 

Application
Power Transfer Unit Cover Housing Seal
Power Transfer Unit Face Seal
Power Transfer Unit Half Shaft Seal
Power Transfer Unit Input Shaft Seal
Power Transfer Unit Intermediate Drive Shaft Seal
Power Transfer Unit Output Shaft Seal
Power Transfer Unit Intermediate Drive Shaft Retainer
Power Transfer Unit Propeller Shaft Seal
Single Use Threaded Fastener/Component Tightening Specifications

NOTE:

All fasteners/components listed in this table MUST BE DISCARDED and replaced with NEW after removal. 

Application Specification
Metric (English)
Power Transfer Unit Drain Plug 40 N.m (30 lb ft)
Power Transfer Unit Fill Plug 40 N.m (30 lb ft)
Power Transfer Unit Extension Housing Bolt 38.5 N.m (28 lb ft)
Reusable Threaded Fastener Tightening Specifications

NOTE:

All fasteners listed in this table can be reused after removal. 

Application Specification
Metric (English)
Power Transfer Unit Heat Shield Bolt 9 N.m (80 lb in)
Power Transfer Unit Shift Actuator Bolt 9 N.m (80 lb in)
Power Transfer Unit Shift Actuator Bolt - Double End Stud 9 N.m (80 lb in)
Power Transfer Unit Vent Hose Connector 20 N.m (15 lb ft)
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.