2018 Chevrolet Suburban 3500 HD LSFACTORY OEM SERVICE PROCEDURE

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 Brake Booster Inlet Hose Seal (Heavy Duty)
Power Steering Assist Motor Seal (Light Duty)
Power Steering Control Module Wiring Harness Retainer (Light Duty)
Power Steering Gear Inlet Hose Seal (Heavy Duty)
Power Steering Gear Outlet Pipe Seal (Heavy Duty)
Power Steering Pump Fitting Seal (Heavy Duty)
Power Steering Pump Seal (Heavy Duty)
Power Steering Pump Shaft Seal (Heavy Duty)
Power Steering Wiring Harness Extension Harness Retainer (Light Duty)
Steering Gear Boot Inner Clamp (Light Duty)
Steering Gear Pitman Shaft Housing Cover O-ring Seal (Heavy Duty)
Steering Gear Pitman Shaft Seal (Heavy Duty)
Steering Gear Shaft Dampener Ring (Light Duty)
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 Steering Assist Motor Bolt (Light Duty) 10 N.m (89 lb in)
Reusable Threaded Fastener Tightening Specifications

NOTE: All fasteners listed in this table can be reused after removal. 
Application Specification
Metric (English)
Pitman Arm Nut (Heavy Duty) 370 N.m (273 lb ft)
Power Brake Booster Inlet Hose (Heavy Duty) 34 N.m (25 lb ft)
Power Steering Fluid Cooler Bracket Bolt (Heavy Duty) 9 N.m (80 lb in)
Power Steering Fluid Reservoir Stud (Heavy Duty) 58 N.m (43 lb ft)
Power Steering Gear Inlet Hose (Heavy Duty) 34 N.m (25 lb ft)
Power Steering Gear Outlet Pipe (Heavy Duty) 34 N.m (25 lb ft)
Power Steering Pump Bolt (Heavy Duty) 59 N.m (44 lb ft)
Power Steering Pump Fitting (Heavy Duty) 75 N.m (55 lb ft)
Power Steering Pump Rear Bracket Bolt (Heavy Duty) 59 N.m (44 lb ft)
Power Steering Pump Rear Bracket Nut (Heavy Duty) 59 N.m (44 lb ft)
Power Steering Wiring Harness Extension Harness Ground Bolt (Light Duty) 6 N.m (53 lb in)
Steering Gear Belt Access Plug (Light Duty) Snug
Steering Gear Bolt (Heavy Duty) 165 N.m (122 lb ft)
Steering Gear Bolt - Left Side (Light Duty) 220 N.m (162 lb ft)
Steering Gear Bolt - Right Side (Light Duty) 100 N.m (74 lb ft)
Steering Gear Pitman Shaft Housing Cover Bolt (Heavy Duty) 57 N.m (42 lb ft)
Steering Gear Pitman Shaft Lash Adjuster Nut (Heavy Duty) 85-103 N.m (63-75 lb ft)
Steering Gear Valve Housing Bolt 62 N.m (46 lb ft)
Steering Linkage Inner Tie Rod (Light Duty) 120 N.m (89 lb ft)
Steering Linkage Outer Tie Rod Nut (Light Duty)
  • First Pass:
 35 N.m (26 lb ft)
  • Final Pass:
 85 - 100 degrees
Factory Service Tools

Use the Manual With the Right Hardware

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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.

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