2006 Hummer H1 Service and Repair Manual

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Fits the 2006 H1 — Alpha Sport Utility 4-Door ·
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2006 Hummer H1 service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Built for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and use wiring diagrams and system sections to diagnose problems faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Electrical coverage with wiring diagrams
  • Coverage across key systems: engine, transmission, brakes, steering, suspension, HVAC, and more

Trims covered

  • Alpha Sport Utility 4-Door

Engines covered

  • 6.6L 400Cu. In. V8 DIESEL OHV Turbocharged

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams
NHTSA #06V37700002/10/2006Component: STEERING

CERTAIN VEHICLES WERE ASSEMBLED WITH AN INCORRECT COMBINATION OF STEERING-GEAR-TO-FRAME ATTACHMENT HARDWARE.

Consequence

THIS CONDITION MAY RESULT IN STEERING GEAR LOOSENING AND, POSSIBLE SEPARATION FROM THE FRAME. IF TH

Remedy

DEALERS WILL INSPECT THE VEHICLE FOR THE PROPER STEERING GEAR HARDWARE ASSEMBLY, AND CORRECT IF NECE

TSB #10025501

HALFSHAFT RETAINING BOLT WITH PRE-APPLIED THREAD LOCKER FOR ALL H1 MODELS AND MODEL YEARS. *PE

TSB #10024741

HUMMER - GEARED FAN DRIVE REPLACEMENT - ALL 2006 MODEL YEAR ALPHA VEHICLES. *NJ

TSB #10022210

ELECTRICAL DIAGNOSTICS. ILLUMINATION OF THE CHECK ENGINE LIGHT, AND ABS LIGHT. AND AN INOPERATIVE CENTRAL TIRE INFLATION SYSTEM (CTIS). *KB

No complaints filed No consumer complaints on file with NHTSA for the 2006 Hummer H1.

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