2010 Hummer H3 Service and Repair Manual

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Factory-Grade Data

2010 Hummer H3 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

  • Base Sport Utility 4-Door
  • Luxury Sport Utility 4-Door
  • Adventure Sport Utility 4-Door
  • Alpha Sport Utility 4-Door

Engines covered

  • 3.7L 3654CC 223Cu. In. l5 GAS DOHC Naturally Aspirated
  • 5.3L 5328CC 325Cu. In. V8 FLEX OHV Naturally Aspirated
  • 5.3L 5328CC 325Cu. In. V8 GAS OHV Naturally Aspirated

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

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Vehicle Safety Data

2010 Hummer H3 Recalls & Complaints

NHTSA #10V17900030/04/2010Component: STRUCTURE:BODY:HOOD

GM IS RECALLING CERTAIN MODEL YEAR 2006 THROUGH 2010 HUMMER H3 VEHICLES. SOME OF THESE VEHICLES HAVE A CONDITION IN WHICH THE INTEGRAL CLIP-TABS ON THE LOUVER ON THE HOOD MAY FRACTURE, CAUSING THE HO

Consequence

IF THE VEHICLE IS BEING DRIVING WHEN THIS OCCURS, IT COULD STRIKE A FOLLOWING VEHICLE AND CAUSE INJU

Remedy

DEALERS WILL APPLY AN ADHESIVE TO THE HOOD LOUVER TO SECURE IT TO THE HOOD. THIS SERVICE WILL BE PE

TSB #11030974

This preliminary information communicates information about how to determine if a wheel and tires size change is available.

TSB #11030092

This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.

TSB #11030091

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

TSB #11027601

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

TSB #11026104

This service bulletin provides information on Tire Sidewall Irregularities.

TSB #11026017

This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.

TSB #11025755

This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customers vehicles that exhibit vibration conditions without utilizing the s

TSB #11024485

The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal for the delay.

Showing the 8 most recent of 1065 technical service bulletins on file with NHTSA.

20150113Component: ELECTRICAL SYSTEMFire reported

MY HEATING AND AC BLOWER MOTOR STOPPED WORKING ON A VEHICLE THAT HAS LESS THAN 31K MILES ON IT. THE ESTIMATED REPAIR COSTS ARE 500$, NOT INCLUDING THE TOW, BEING THAT IT IS THE MIDDLE OF WINTER AN

20240302Component: POWER TRAIN

My transfer case established a large fluid leak so I inspected it, the findings was a large hole in the main housing on the transfer case fluid was leaking out. The transfer case was removed and disas

20191022Component: ELECTRICAL SYSTEM

TL* THE CONTACT OWNS A 2010 HUMMER H3. ON MANY OCCASIONS, THE VEHICLE WOULD NOT IMMEDIATELY START AND THE SECURITY INDICATOR ILLUMINATED. THE VEHICLE HAD BEEN SERVICED FOR THE SAME FAILURE MANY TIMES

20181114Component: ELECTRICAL SYSTEM

THE VEHICLE SOMETIMES WILL NOT START DUE TO A PROBLEM WITH THE SECURITY SENSOR IN THE IGNITION SWITCH. THIS IS WHEN STARTING UP THE VEHICLE AND WILL ONLY PERIODICALLY OCCUR. THE SECURITY SYSTEM L

20150128Component: ENGINE

WHILE I WAS ON THE ROAD GOING HOME I NOTICED THAT MY TEMPERATURE WAS SLOWLY RISING THEN ALL OF A SUDDEN MY ENGINE ROOM WAS SMOKING I PULLED ASIDE AND LOOKED AT THE ENGINE ROOM THE SMOKE WAS CAUSED BY

Showing the 5 most serious of 8 complaints filed with NHTSA.

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