ISUZU ASCENDER Service Repair Manual 2003-2008

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🏷️ Basic Information Identification Make: Isuzu Model: Ascender Model Years Covered: 2003, 2004, 2005, 2006, 2007, 2008 Vehicle Type: Full-size SUV Platform: GMT360 (shared with Chevrolet TrailBlazer, GMC Envoy, Oldsmobile Bravada, Buick Rainier, Saab 9-7X) 👋 Introduction Market Position Market Segment: Full-size, body-on-frame SUV Target Audience: Families, individuals seeking utility and towing capability Competitive Analysis Key Competitors: Chevrolet Tahoe/Suburban, GMC Yukon/Yukon XL, Ford Expedition, Dodge Durango, Toyota Sequoia Key Features Value Proposition: Affordable, capable, and reliable full-size SUV with shared GM platform components Engine Options: Choice of powerful inline-six and V8 engines Towing Capability: Significant towing capacity for its class Drivetrain Options: Available 2WD and advanced 4WD systems Interior Space: Spacious interior with available third-row seating 📋 Manual Details Coverage Areas Manual Type: Service Repair Workshop Manual Language: English Format: PDF Download Delivery Method: Instant Email Download Link Software Requirements: Adobe Acrobat Reader Operating Systems: PC & MAC Computers (Windows 95-8, macOS) Printable: Yes, individual pages can be printed Searchable: Yes, text is searchable within the PDF 📖 Manual Coverage Systems Covered Engine: 4.2L Atlas LL8 I6, 5.3L Vortec LH6 V8, 6.0L Vortec LQ4/LQ9 V8 Transmission: 4L60-E 4-speed automatic, 4L70-E 4-speed automatic Drivetrain: 2WD (RWD), 4WD (NVG226 Autotrac transfer case) Suspension: Independent front suspension (SLA), solid rear axle with leaf springs Brakes: Front disc, rear disc; ABS Steering: Power-assisted rack and pinion (rack and worm for earlier models) Electrical System: Charging system, starting system, ignition system, lighting, instruments, accessories, Body Control Module (BCM) HVAC: Heating, Ventilation, and Air Conditioning systems Body And Frame: Body construction, exterior panels, interior trim, glass, chassis components Diagnostic Trouble Codes: Coverage for P, B, C, and U codes Procedures Included Maintenance: Oil change, fluid checks/changes, filter replacements, tire rotation, lubrication Tune Up: Spark plug replacement, ignition system checks, fuel system cleaning Engine Repair: Engine assembly/disassembly,...

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Tipo: Car

Fabricante:

Sku: 322281

Coleções: ALL Isuzu

Disponibilidade: 9999 Em estoque

Tag: 2003 2004 2005 2006 2007 2008 ASCENDER Car Cars Isuzu

Variantes do produto

Description

🏷️ Basic Information

Identification

Make:

Isuzu

Model:

Ascender

Model Years Covered:

2003, 2004, 2005, 2006, 2007, 2008

Vehicle Type:

Full-size SUV

Platform:

GMT360 (shared with Chevrolet TrailBlazer, GMC Envoy, Oldsmobile Bravada, Buick Rainier, Saab 9-7X)

👋 Introduction

Market Position

Market Segment:

Full-size, body-on-frame SUV

Target Audience:

Families, individuals seeking utility and towing capability

Competitive Analysis

Key Competitors:

Chevrolet Tahoe/Suburban, GMC Yukon/Yukon XL, Ford Expedition, Dodge Durango, Toyota Sequoia

Key Features

Value Proposition:

Affordable, capable, and reliable full-size SUV with shared GM platform components

Engine Options:

Choice of powerful inline-six and V8 engines

Towing Capability:

Significant towing capacity for its class

Drivetrain Options:

Available 2WD and advanced 4WD systems

Interior Space:

Spacious interior with available third-row seating

📋 Manual Details

Coverage Areas

Manual Type:

Service Repair Workshop Manual

Language:

English

Format:

PDF Download

Delivery Method:

Instant Email Download Link

Software Requirements:

Adobe Acrobat Reader

Operating Systems:

PC & MAC Computers (Windows 95-8, macOS)

Printable:

Yes, individual pages can be printed

Searchable:

Yes, text is searchable within the PDF

📖 Manual Coverage

Systems Covered

Engine:

4.2L Atlas LL8 I6, 5.3L Vortec LH6 V8, 6.0L Vortec LQ4/LQ9 V8

Transmission:

4L60-E 4-speed automatic, 4L70-E 4-speed automatic

Drivetrain:

2WD (RWD), 4WD (NVG226 Autotrac transfer case)

Suspension:

Independent front suspension (SLA), solid rear axle with leaf springs

Brakes:

Front disc, rear disc; ABS

Steering:

Power-assisted rack and pinion (rack and worm for earlier models)

Electrical System:

Charging system, starting system, ignition system, lighting, instruments, accessories, Body Control Module (BCM)

HVAC:

Heating, Ventilation, and Air Conditioning systems

Body And Frame:

Body construction, exterior panels, interior trim, glass, chassis components

Diagnostic Trouble Codes:

Coverage for P, B, C, and U codes

Procedures Included

Maintenance:

Oil change, fluid checks/changes, filter replacements, tire rotation, lubrication

Tune Up:

Spark plug replacement, ignition system checks, fuel system cleaning

Engine Repair:

Engine assembly/disassembly, cylinder head service, piston/ring replacement, valve train service, timing components

Transmission Service:

Fluid and filter changes, internal component inspection, torque converter replacement, valve body service

Brake Service:

Brake pad/shoe replacement, rotor/drum resurfacing/replacement, caliper/wheel cylinder service, bleeding procedure

Suspension And Steering Repair:

Ball joint replacement, tie rod end replacement, shock/strut replacement, control arm service

Electrical Diagnostics:

Wiring diagrams, component testing, module diagnostics, sensor troubleshooting

HVAC Repair:

Refrigerant system service, blower motor replacement, evaporator/condenser service

Body Repair:

Panel replacement, dent removal, rust repair, glass replacement

Troubleshooting:

Step-by-step diagnostic procedures for common and uncommon faults

Technical Depth

Depth Of Coverage:

Comprehensive A-Z coverage from basic maintenance to complete rebuilds

Diagnostic Information:

Includes access to professional technician-level diagnostic procedures and data

Repair Procedures:

Detailed, step-by-step instructions with clear explanations

Diagrams Illustrations:

Highly detailed, printable diagrams and illustrations for clarity

Torque Specifications:

Included for critical fasteners and assembly points

Special Tools:

Identification of any specialized tools required for specific procedures

📊 Manual Specifications

File Format

File Format:

Adobe PDF

File Quality:

High-resolution, suitable for printing

Searchability:

OCR (Optical Character Recognition) enabled for text search

Print Quality

Print Recommendation:

Print pages as needed for clean, up-to-date references

Binding Type

Binding Type:

N/A (Digital Download)

Paper Type

Paper Type Recommendation:

Standard copy paper for printing

⚙️ Engine Specifications

Primary Engine

Engine 1 Displacement:

4.2 Liters (256 cubic inches)

Engine 1 Configuration:

Inline 6-cylinder, DOHC, 24 valves

Engine 1 Horsepower:

Approximately 275 hp @ 6000 rpm (varies slightly by year)

Engine 1 Torque:

Approximately 275 lb-ft @ 3600 rpm (varies slightly by year)

Engine 1 Fuel System:

Sequential Port Fuel Injection (SFI)

Engine 2

Engine 2 Displacement:

5.3 Liters (323 cubic inches)

Engine 2 Configuration:

V8, OHV, 16 valves, Active Fuel Management (AFM) on later models

Engine 2 Horsepower:

Approximately 290-300 hp (varies by year)

Engine 2 Torque:

Approximately 325-330 lb-ft (varies by year)

Engine 2 Fuel System:

Sequential Port Fuel Injection (SFI)

Engine 3

Engine 3 Displacement:

6.0 Liters (364 cubic inches)

Engine 3 Configuration:

V8, OHV, 16 valves

Engine 3 Horsepower:

Approximately 300-325 hp (depending on LQ4/LQ9 variant)

Engine 3 Torque:

Approximately 370-380 lb-ft (depending on LQ4/LQ9 variant)

Engine 3 Fuel System:

Sequential Port Fuel Injection (SFI)

🔧 Transmission

Standard

Standard Transmission Type:

4-speed automatic (4L60-E)

Optional

Optional Transmission Type:

4-speed automatic (4L70-E, an enhanced version of 4L60-E)

Features

Transmission Cooling:

Includes auxiliary transmission cooler for towing applications

Transmission Fluid Type:

Dexron III (or compatible Dexron VI for later models)

📐 Dimensions

Exterior

Overall Length:

Approx. 205.5 inches

Overall Width:

Approx. 75.4 inches

Overall Height:

Approx. 71.9 inches

Wheelbase:

Approx. 113.0 inches

Front Track:

Approx. 63.4 inches

Rear Track:

Approx. 63.1 inches

Weights

Curb Weight:

Approx. 4,600 - 5,000 lbs (varies by configuration)

Gross Vehicle Weight Rating Gvw:

Approx. 6,400 - 6,700 lbs

Towing Capacity:

Up to 7,700 lbs (with appropriate equipment and engine)

Payload Capacity:

Approx. 1,400 - 1,800 lbs

🛡️ Safety Features

Ratings

NHTSA Frontal Impact Driver:

4 Stars (for models with side curtain airbags)

NHTSA Frontal Impact Passenger:

4 Stars (for models with side curtain airbags)

NHTSA Side Impact Front Seat:

5 Stars

NHTSA Side Impact Rear Seat:

4 Stars (with side curtain airbags)

IIHS Frontal Offset Score:

Good (for models with side airbags)

Active Features

Standard 4-wheel Anti-lock Braking System (ABS)

Traction Control:

Available StabiliTrak Electronic Stability Control (ESC) and Traction Control System (TCS)

4Wd System:

Optional NVG226 Autotrac active transfer case with automatic 4WD engagement

Passive Features

Airbags:

Front airbags standard; available front side-impact airbags and side curtain airbags

Seatbelts:

3-point seatbelts for all occupants, pretensioners, load limiters

Child Seat Anchors:

LATCH (Lower Anchors and Tethers for CHildren) system

💡 Technology Features

Infotainment

Audio System:

AM/FM stereo with CD player; optional Bose premium audio system available.

Navigation:

Optional factory-installed navigation system available on higher trims.

Driver Assistance

Parking Assist:

Optional rear parking assist sensors on some models.

Cruise Control:

Standard cruise control system.

Connectivity

Auxiliary Input:

Optional auxiliary audio input jack on some models.

Remote Keyless Entry:

Standard on most trims.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Typically every 5,000 - 7,500 miles or 6 months, depending on driving conditions and oil type (refer to manual for specifics)

Engine Air Filter Replacement:

Every 15,000 - 30,000 miles or as needed based on inspection

Cabin Air Filter Replacement:

Every 15,000 - 20,000 miles or annually

Spark Plug Replacement I6:

Approx. 100,000 miles (iridium plugs)

Spark Plug Replacement V8:

Approx. 100,000 miles (iridium plugs)

Transmission Fluid Change:

Every 30,000 - 60,000 miles, or annually for heavy towing

Coolant Flush:

Every 30,000 - 50,000 miles or 2-3 years

Fluid Specifications

Engine Oil Type:

SAE 5W-30 (check manual for specific API service classification and oil type like Dexos)

Engine Oil Capacity I6:

Approx. 7 quarts (with filter)

Engine Oil Capacity V8:

Approx. 7.5 quarts (with filter)

Coolant Type:

Dex-Cool (Orange, silicate-free) or equivalent OAT (Organic Acid Technology) coolant

Power Steering Fluid:

Dexron III/VI or equivalent

Known Issues

Common Issue 1:

Front suspension component wear (ball joints, tie rods, control arm bushings) due to vehicle weight and use.

Common Issue 2:

Water pump leaks, particularly on the Atlas inline-6 engine.

Common Issue 3:

Rear main seal leaks on V8 engines.

Common Issue 4:

HVAC blower motor resistor failure, leading to inoperable fan speeds.

Common Issue 5:

Evaporative Emission Control (EVAP) system leaks, often due to faulty vent solenoid or gas cap.

Common Issue 6:

Transfer case actuator or encoder motor failure in 4WD models.

📚 Vehicle History

Brand Heritage

Isuzu Legacy:

Isuzu has a long history of producing durable trucks and SUVs, with a reputation for robust powertrains.

Model Evolution

Ascender Introduction:

The Isuzu Ascender was introduced for the 2003 model year as Isuzu's entry into the full-size SUV market in North America.

Badge Engineering:

It was a badge-engineered version of GM's GMT360 platform, sharing its underpinnings with popular GM SUVs.

Engine Updates:

The 5.3L V8 received Active Fuel Management (AFM) starting in 2007 for improved fuel economy.

Production

Production Location:

Moraine, Ohio, USA (GM's Moraine Assembly Plant)

Production End:

Production ceased after the 2008 model year as Isuzu exited the US market for passenger vehicles.

🏆 Awards & Recognition

Recognitions

Safety Award Mention:

Received decent safety ratings from NHTSA and IIHS for its class and era, especially when equipped with side airbags.

Towing Capability Recognition:

Praised for its robust towing capacity, making it a practical choice for hauling.