🏷️ Basic Information

Make:

GMC

Model:

Sierra 1500 HD

Year:

2006

Platform:

GMT800 (Third Generation Sierra/Silverado)

Model Code:

GMT880 (specific to 1500 HD, 2500, 2500 HD, 3500)

👋 Introduction

Vehicle Segment:

Heavy-duty half-ton pickup truck

Target Audience:

Owners seeking to perform maintenance and repairs, DIY enthusiasts, independent repair shops

Competitors:

Ford F-150, Dodge Ram 1500, Toyota Tundra

Manual Advantage:

Official licensing and OE data, digital convenience, comprehensive coverage compared to generic repair guides.

Licensed Data:

Derived from factory service manuals, ensuring accuracy and completeness.

Digital Format:

Instant access, searchable, accessible on multiple devices, eliminates the need for bulky print manuals.

Cost Savings:

Empowers owners to perform repairs, saving on labor costs at dealerships or independent shops.

📋 Manual Details

Primary Coverage:

2006 GMC Sierra 1500 HD

Engine Variants Covered:

All engine options available for the 2006 Sierra 1500 HD

Drivetrain Variants Covered:

2WD and 4WD models

Estimated Page Count:

Thousands (as is typical for comprehensive factory-derived software)

Type:

Service and Repair Manual Software

Source Material:

Factory OE (Original Equipment) materials licensed through RepairSurge

Language:

English

Format:

Online Software/Web-based access

Accessibility:

Compatible with PC, laptop, smartphone, tablet via web browser

Access Duration:

1 Year included, with discounts for additional years

📖 Manual Coverage

Powertrain:

Engine (all variants), Transmission (automatic), Drivetrain (differentials, axles, driveshafts)

Chassis:

Suspension (front and rear), Steering system, Brakes (front and rear, ABS)

Electrical:

Wiring diagrams, Powertrain Control Module (PCM), Body Control Module (BCM), Lighting, Instrumentation, Audio System, Power Accessories

HVAC:

Heating, Ventilation, and Air Conditioning (HVAC) system components and operation

Body:

Body panels, Doors, Windows, Interior trim, Exterior trim, Bumpers

Maintenance:

Scheduled maintenance (oil changes, filter replacements, fluid checks), Lubrication points

Diagnostics:

Troubleshooting charts, Diagnostic Trouble Codes (DTCs), Symptom-based diagnostics

Repair:

Component removal and installation, Overhaul procedures, Adjustments

Specifications:

Torque specifications, Component measurements, Clearances

Depth:

Comprehensive, covering everything from basic fluid checks to complete engine and transmission overhauls, including detailed wiring diagrams and diagnostic procedures.

📊 Manual Specifications

Type:

Proprietary Software (Web-based access)

Searchability:

Searchable text for quick information retrieval

Interactivity:

Likely includes interactive diagrams and linked procedures

Quality:

N/A (digital format)

Type:

N/A (digital format)

Type:

N/A (digital format)

⚙️ Engine Specifications

Engine Option 1:

6.0L Vortec V8 (LQ4/LQ9)

Displacement 1:

364 cu in (5967 cc)

Horsepower 1:

Approx. 300-325 hp (varies slightly based on LQ4 vs LQ9 and specific tuning)

Torque 1:

Approx. 365-373 lb-ft (varies slightly)

Engine Option 2:

6.0L Vortec V8 (LQ7 - for specific applications like High Output)

Displacement 2:

364 cu in (5967 cc)

Horsepower 2:

Approx. 325 hp

Torque 2:

Approx. 370 lb-ft

Type:

Sequential Multi-Port Fuel Injection (MPI)

Fuel Type:

Unleaded Gasoline (87 octane recommended for standard operation)

Emissions Controls:

Catalytic Converter, On-Board Diagnostics (OBD-II) system

🔧 Transmission

Transmission Type:

4-speed Automatic (4L60-E or 4L70-E)

Gear Ratios:

Specific ratios available within the manual for 4L60-E/4L70-E

Transmission Type:

N/A for Sierra 1500 HD, typically only automatic was offered.

Transmission Fluid Type:

Dexron-III H Automatic Transmission Fluid (ATF)

Transmission Fluid Capacity:

Approx. 11.7 quarts (11.1 liters) for fill, higher for complete overhaul. Specific capacity detailed in manual.

📐 Dimensions

Wheelbase:

143.5 inches (for Crew Cab, Standard Bed)

Length:

Approx. 237.0 inches (for Crew Cab, Standard Bed)

Width:

Approx. 79.5 inches (body)

Height:

Approx. 75.2 inches (for 4WD Crew Cab, Standard Bed)

Curb Weight:

Approx. 5,600 - 6,200 lbs (varies by configuration)

Gvwr:

8,600 lbs

Payload Capacity:

Approx. 2,400 - 3,000 lbs

Towing Capacity:

Up to 10,300 lbs (properly equipped)

🛡️ Safety Features

NHTSA Front Impact Driver:

5 Stars

NHTSA Front Impact Passenger:

5 Stars

NHTSA Side Impact Front Seat:

5 Stars

NHTSA Side Impact Rear Seat:

4 Stars

IIHS Moderate Overlap Front:

Good

ABS:

Standard Anti-lock Braking System (ABS)

Traction Control:

Optional (StabiliTrak on some models)

Airbags:

Frontal airbags for driver and front passenger

Seatbelts:

Three-point seatbelts for all occupants, pretensioners for front seats

💡 Technology Features

Headunit:

Factory AM/FM stereo with CD player, optional Bose premium audio system.

Display:

Basic digital display for radio and climate controls. No integrated navigation or touchscreen on standard models.

Cruise Control:

Standard cruise control.

Parking Assist:

Optional rear parking assist sensors.

Phone Integration:

Optional OnStar system for emergency services and basic communication.

Auxiliary Input:

Optional auxiliary audio input jack on some models.

🔧 Maintenance

Oil Change:

Every 3,000-7,500 miles (or 6 months) depending on driving conditions and oil type used. Refer to manual for exact recommendations.

Transmission Fluid Change:

Typically every 30,000-60,000 miles, or as per severe duty schedule.

Coolant Flush:

Every 5 years or 100,000 miles with extended life coolant.

Engine Oil Type:

SAE 5W-30 (Synthetic Blend or Full Synthetic recommended for optimal performance and protection).

Engine Oil Capacity:

7 Quarts (with filter)

Coolant Type:

GM Dex-Cool (Orange) or equivalent silicate-free, long-life coolant.

Engine Ls Series:

Possible intake manifold gasket leaks (minor coolant or vacuum leaks), piston slap (especially when cold on some 6.0L variants), oil pressure sensor issues.

Transmission:

4L60-E can experience torque converter shudder or premature wear of clutch packs if not maintained properly. Solenoid issues can cause shifting problems.

Suspension:

Front ball joints and tie rod ends can wear over time, leading to steering looseness or noise, especially on heavy-duty models subjected to towing or rough use.

Electrical:

Flexplate to crankshaft bolts can loosen, causing a ticking noise and potential transmission damage. Window motor failures are also noted.

📚 Vehicle History

Brand Focus:

GMC - 'Professional Grade' trucks, focusing on heavy-duty capabilities and commercial applications, though also popular with consumers.

Generation:

Third Generation GMT800 platform (1999-2007, with a refresh in 2003).

1500 Hd Positioning:

The '1500 HD' designation represented a step up in capability from the standard 1500, often bridging the gap to the 2500 models, typically featuring stronger frames, suspension, and the larger 6.0L V8 engine.

Manufacturing Location:

Various GM assembly plants in North America (e.g., Fort Wayne, Indiana; Oshawa, Ontario).

🏆 Awards & Recognition

Truck Of The Year:

While the Sierra 1500 HD itself might not have specific 'Truck of the Year' awards as a distinct model, the GMT800 platform trucks (including GMC Sierra and Chevrolet Silverado) consistently received positive reviews and accolades for their robust design, powerful engines, and towing capabilities during their production run.

Consumer Reports:

Often rated well for reliability and performance within its class, though specific year ratings vary. The 6.0L engine was noted for its power.

Emissions Certification:

Meets EPA and California Air Resources Board (CARB) emissions standards for the model year.