2003 Chevrolet Trailblazer Ext Ignition and Tune-Up Products

Essential 2003 Chevrolet Trailblazer Ext Ignition and Tune-Up Products

Delphi – Knock Sensor (Part No.AS10261)

Knock Sensor

from

$21.99
Manufactured to meet or exceed OE requirements; Delphi Knock Sensors help maximize engine performance with all fuels; Delphi Knock Sensors prevent against engine damage from pre-ignition knocking.

Product Features:
  • Flat frequency response allows the same sensor to be used on different engines and the sensor responds to knock frequencies higher than the primary frequency
  • Delphi knock sensors prevent against engine damage from pre-ignition knocking
  • Calibrated for a wide variety of frequencies to detect shifts, and adjust to provide accurate signals to help maximize engine performance
  • Flat frequency response allows the same sensor to be used on different engines and the sensor responds to knock frequencies higher than the primary frequency
  • Ground-isolated design with 2-wire shielded harness helps protect the sensor signal from electro-magnetic interference (EMI)
  • Self-generating piezoelectric design requires no power to the sensor
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Dorman – Knock Sensor And Harness Kit (Part No.926-084)

Knock Sensor And Harness Kit

from

$94.99
Check engine light on and vehicle running rough? Could be a failed knock sensor. This ignition knock sensor kit combines both necessary sensors and the wiring harness that joins them for a complete repair in one package.

Product Features:
  • Complete solution – this knock sensor kit includes two knock sensors and the wiring harness that connects them
  • Plug-and-play installation – matches original wiring harness, requiring no cutting or splicing
  • Quality assured – benchmarked against original components for performance and quality
  • Excellent value – original equipment quality at significant cost savings
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ACDelco – Copper Core Spark Plug: Original Equipment Replacement (Part No.R44LTSM)

Copper Core Spark Plug: Original Equipment Replacement

from

$4.99
ACDelco GM Original Equipment Conventional Spark Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These Conventional Spark Plugs are designed for reliability and efficient performance, and are a high quality replacement for many vehicles on the road today. Their high-quality copper cores and outstanding suppression characteristics deliver reliable performance. They are also available for Marine applications. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco GM Original Equipment parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional.

Product Features:
  • GM regularly updates production and service part designs to integrate new materials and technologies
  • High-Quality Copper Core: Designed with high-quality copper cores for reliable performance and efficient operation.
  • Nickel Center Electrode Tip: Features a nickel center electrode tip for enhanced durability and consistent performance.
  • Outstanding Suppression Characteristics: Engineered to deliver outstanding suppression characteristics, ensuring smooth engine operation.
  • OE Fit, Form, and Function: Manufactured to meet original equipment specifications for fit, form, and function, ensuring a perfect replacement for GM vehicles.
  • Versatile Applications: Providing a high-quality replacement for a wide range of vehicles.
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Carquest – A/C Compressor Connector (Part No.PT770)

A/C Compressor Connector

from

$16.05
BWD is an aftermarket leader, providing a premium line of engine management products. BWD manufactures and distributes high technology critical components for late model domestic and import vehicles. BWD is constantly evolving to give customers the competitive edge they need to compete in today’s ever-changing marketplace.

Product Features:
  • Our knock sensors are designed to respond to knock frequencies up to 1000 Hz accommodating shifts in engine knock frequency making it a more flexible sensor responding to correct engine knock over a broad range of vehicle conditions
  • Manufacturing processes include an automated data acquisition system to continuously monitor the sensor output to ensure that it responds with appropriate voltage output at the specified frequency range
  • All units are 100% tested using an accelerometer vibration test to ensure trouble-free operation
  • Featuring the broadest sensor coverage in the market, we meet the service professionals needs with the highest quality product every time he opens the box
  • BWD is a global manufacturer of original equipment ignition products, complete quality control is maintained through the manufacturing process from componentry to finished product
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Carquest Premium – Ignition Switch (Part No.CSA1039)

Ignition Switch

from

$46.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Carquest – Cornering Light Socket (Part No.PT189)

Cornering Light Socket

from

$23.29
BWD is an aftermarket leader, providing a premium line of engine management products. BWD manufactures and distributes high technology critical components for late model domestic and import vehicles. BWD is constantly evolving to give customers the competitive edge they need to compete in today’s ever-changing marketplace.

Product Features:
  • Our control modules feature double wire bonds for better connections, greater dependability and longer life despite being subjected to intense vibration and the tough operating environment
  • Copper slug heat sinks provide better heat dissipation to prevent heat from damaging the module
  • Our ignition modules will respond to a weak signal from the crankshaft position sensor and begin energizing the coils immediately for better starts in cold weather
  • High-temperature polymer housing reducing moisture intrusion and minimizes vibration damage for extended life and improved reliability
  • Our ignition modules are durability tested for 500 thermal cycles ranging from -40C to +125C
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Carquest Premium – Ignition Coil: Meets or Exceeds OE Specifications, 1 Count (Part No.EBC1347)

Ignition Coil: Meets or Exceeds OE Specifications, 1 Count

from

$62.99
Carquest Premium ignition coils meet or exceed original equipment (OE) specifications and are developed by top OE/OES manufacturers to ensure superior performance. All of our Carquest Premium ignition coils are developed by IATF 16949 certified manufacturers for consistent durability and long-lasting performance. These ignition coils use high-quality components and will utilize optimized designs on applications where the OE ignition coil had frequent failures. We require stringent testing standards to ensure proper fit and performance for each application and stand behind our Carquest Premium ignition coils with an industry-leading warranty. Carquest Premium ignition coils are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:
  • Built by IATF 16949 certified manufacturers for consistent durability
  • Coil drivers match OE for current limit, electrostatic discharge (ESD) protection and multi-spark
  • Segmented secondary bobbins to distribute high voltage and prevent shorting
  • Extensive design validation testing to ensure long-lasting reliability
  • 100% end-of-line tested to ensure proper performance
  • Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
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Carquest Premium – Ignition Coil Connector (Part No.PTA1335)

Ignition Coil Connector

from

$48.49
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
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Carquest Premium – Engine Crankshaft Position Sensor Connector (Part No.PTA1136)

Engine Crankshaft Position Sensor Connector

from

$69.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
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DENSO – Spark Plug Wire Set: Aluminum Steel Core, 8 Wire Set (Part No.671-8072)

Spark Plug Wire Set: Aluminum Steel Core, 8 Wire Set

from

$104.99
DENSO First Time Fit Ignition Wire Sets are identical in form fit color and performance to the factory-installed wire sets. Every part of each wire sets construction meets or exceeds OE/OES standards.

Product Features:
  • Each wire is pre-cut to exact length so the wire set is ready to install right out of the box
  • Identical OE end caps are designed to “click” into place for easy installation and a secure fit
  • Strong connections – through a patented process, the terminals are attached to provide an extremely strong connection, ensuring the cable and boot will not separate during removal and installation
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Accel – Coil:GM Ls2 Ls3 Ls7 8-Pack-Black (Part No.140043K-8)

Coil:GM Ls2 Ls3 Ls7 8-Pack-Black

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$628.99
Now you can have ACCEL late model Supercoils in additional colors

Product Features:
  • These coils feature advanced bobbin technology.
  • Highly specialized silicone magnetic steel cores with optimized windings
  • Specialized high temperature epoxy filled housings resists shock, vibration, chemicals, and overall engine bay environment.
  • These are a direct performance bolt on upgrade.
  • The ACCEL bodies are molded in a high dielectric strength material.
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Accel – Coil:GM Ls2 Ls3 Ls7 8-Pack (Part No.140043-8)

Coil:GM Ls2 Ls3 Ls7 8-Pack

from

$519.99
ACCEL Super Coils feature advanced bobbin technology, highly specialized silicon magnetic steel cores, optimized windings, proper resistance and engineered turn ratios that deliver a high performance, quality coil. Specialized high temperature epoxy resists shock and vibration, while increasing thermal conductivity. These are direct high performance replacements for OEM coils.

Product Features:
  • These coils feature advanced bobbin technology.
  • Highly specialized silicone magnetic steel cores with optimized windings
  • Specialized high temperature epoxy filled housings resists shock, vibration, chemicals, and overall engine bay environment.
  • These are a direct performance bolt on upgrade.
  • The ACCEL bodies are molded in a dielectric high-strength material.
  • 8 Pack
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NGK – NGK Wire Set (Part No.51439)

NGK Wire Set

from

$78.99
NGK ultra-low resistance mag core wire sets provide outstanding performance and durability. High-temp premium silicone outer jacket and inner EPDM/silicone insulation contain high voltage currents for excellent dielectric strength. Stainless steel winding

Product Features:
  • PERFECT FIT FOR YOUR VEHICLE: Built to OEM tolerances with OE quality or better materials
  • BUILT TO LAST: Outer Jacket built to withstand temperatures greater than 250 degrees C, inner insulation EPDM or silicone for best dielectric strength
  • STAINLESS STEEL TERMINALS: Provide the highest possible retention to ensure positive connections through the life of the set
  • CYLINDER LEAD ID: Cylinder lead identification tags where possible make installation easier
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Carquest Premium – Coil On Plug Insulator Boot Multi Pack, Spring included (Part No.38-007GMP)

Coil On Plug Insulator Boot Multi Pack, Spring included

from

$38.99
CARQUEST Premium coil on plug boots are engineered to restore ignition boot reliability and performance. We have OE design providing an exact direct fit for your application and the performance and durability meet or exceed OE requirements. It offers excellent heat resistance as well as maximum protection against spark loss. With durable silicone compound for resistance to high heat or abrasion.

Product Features:
  • Provides excellent heat resistance as well as maximum protection against spark loss.
  • Durable silicone compound for resistance to high heat or abrasion
  • Spring included with the coil boot
  • Design for direct compatibility
  • OE design provides an exact fit for your application
  • Multipack provides one time replace all COP for better deal
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Carquest Premium – Ignition Coil Seal (Part No.FAA1099)

Ignition Coil Seal

from

$18.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Designed to match OE in form to ensure proper, trouble free fit
  • Premium quality materials for longer service life
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ACDelco – Spark Plug Wire Set (Part No.748RR)

Spark Plug Wire Set

from

$145.99
ACDelco GM Original Equipment Spark Plug Wire Sets consist of a set of wires, encased in an insulating material, connectors, and insulating boots, and are GM-recommended replacements for your vehicle’s original components. The wires transfer high voltage pulses between the voltage source, the distributor, and the spark plug. These original equipment wires have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:
  • Durable to help transfer high voltage pulses without damage
  • GM-recommended replacement part for your GM vehicle’s original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function
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NGK – Coil on Plug Boot (Part No.58921)

Coil on Plug Boot

from

$5.79
NGK Coil on Plug Boots are built to stringent OEM tolerances, combining original equipment fit, design and outstanding durability. NGK Coil on Plug Boots are manufactured using only premium silicone and always include any required internal springs and ferrite resistors for superior performance and RFI noise suppression. Bridging the important link between ignition coil and spark plug, COP boots should always be replaced with NGK Coil on Plug Boots at the time as changing spark plugs to prevent ignition problems such as flashover.

Product Features:
  • PREMIUM GRADE SILICONE: Designed to withstand harsh environments
  • OEM MATCHED: Includes all required internal springs and ferrite resistors for superior performance and RFI noise suppression
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Dorman – Help – Knock Sensor Grommet (Part No.42003)

Knock Sensor Grommet

from

$14.99
This ignition knock (detonation) sensor seal is designed to match the fit and function of the original seal on specified vehicles, and is engineered for durability & reliable performance.

Product Features:
  • Direct replacement – this ignition knock (detonation) sensor seal is designed to match the fit and function of the original seal on specified vehicles.
  • Restores functionality – reliable replacement for an original part that is leaking or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Prenco – Prenco Direct Ignition Coil Boot (Part No.F3006183094PRN)

Prenco Direct Ignition Coil Boot

from

$11.36
Prenco Coil on Plug Boots provide the best protection possible for your ignition system versus the harsh environment created by the modem day engine. Prenco Coil on Plug Boots are constructed using the finest quality materials and compounds, and produced with superior quality tooling that exactly matches the Original Equipment Boot.

Product Features:
  • Prenco Coil on Plug Boots are produced using precise computer designed tooling and premium quality materials/compounds that are formulated to perform in extreme temperatures.
  • Prenco Coil on Plug Boots are designed as a direct replacement for the OE Boot. Springs, grommets and ferrite resistors are provided for all applications where applicable.
  • Inspect and replace Coil on Plug Boots every 50,000 miles and/or with every spark plug change to ensure optimum engine efficiency and performance.
  • Replacing Coil and Plug Boots at regular intervals will prevent/correct misfires and will help to minimize further costly damage to Ignition Coils, Sensors, Catalytic Convertors, and ECUs.
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NGK – NGK Wire Set (Part No.51436)

NGK Wire Set

from

$78.99
NGK ultra-low resistance mag core wire sets provide outstanding performance and durability. High-temp premium silicone outer jacket and inner EPDM/silicone insulation contain high voltage currents for excellent dielectric strength. Stainless steel winding

Product Features:
  • PERFECT FIT FOR YOUR VEHICLE: Built to OEM tolerances with OE quality or better materials
  • BUILT TO LAST: Outer Jacket built to withstand temperatures greater than 250 degrees C, inner insulation EPDM or silicone for best dielectric strength
  • STAINLESS STEEL TERMINALS: Provide the highest possible retention to ensure positive connections through the life of the set
  • CYLINDER LEAD ID: Cylinder lead identification tags where possible make installation easier
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NGK – Coil on Plug Boot (Part No.58981)

Coil on Plug Boot

from

$5.49
NGK Coil on Plug Boots are built to stringent OEM tolerances, combining original equipment fit, design and outstanding durability. NGK Coil on Plug Boots are manufactured using only premium silicone and always include any required internal springs and ferrite resistors for superior performance and RFI noise suppression. Bridging the important link between ignition coil and spark plug, COP boots should always be replaced with NGK Coil on Plug Boots at the time as changing spark plugs to prevent ignition problems such as flashover.

Product Features:
  • PREMIUM GRADE SILICONE: Designed to withstand harsh environments
  • OEM MATCHED: Includes all required internal springs and ferrite resistors for superior performance and RFI noise suppression
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GM Genuine Parts – Fuel Injection Fuel Rail Bolt (Part No.12554211)

Fuel Injection Fuel Rail Bolt

from

$9.99
GM Genuine Parts Studs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies
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Carquest Premium – Exhaust Gas Recirculation (EGR) Vacuum Regulator Solenoid Connector (Part No.PTA1107)

Exhaust Gas Recirculation (EGR) Vacuum Regulator Solenoid Connector

from

$24.49
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
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2003 Chevrolet Trailblazer Ext Ignition and Tune-Up Products

You count on your 2003 Chevrolet Trailblazer Ext to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Ignition and Tune-Up Products. With 86 Ignition and Tune-Up Products ranging in price from $2.99 to $653.99, you’re sure to find everything you need for your 2003 Chevrolet Trailblazer Ext.

Brands matter. If you want to shop a specific Ignition and Tune-Up Products brand, we stock 16 different brands like ACDelco, Autolite, and NGK. 2003 Chevrolet Trailblazer Ext Ignition and Tune-Up Products start as low as $2.99!

One of the best ways to find top quality OEM or aftermarket Ignition and Tune-Up Products is by asking professionals. Short of that, you can shop with confidence thanks to our 5,814 extensive product reviews on 2003 Chevrolet Trailblazer Ext Ignition and Tune-Up Products. Some of the top-rated Ignition and Tune-Up Products products we carry are DiamondFIRE Automotive Spark Plug: More Power, Saves Gas with 4.4 stars and Double Platinum Spark Plug: Platinum Firing, Superior Durability, Longer Life with 4.7 stars.

Did we mention you can order your Ignition and Tune-Up Products from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Ignition and Tune-Up Products inventory for your 2003 Chevrolet Trailblazer Ext below to get started!

Top-Rated Ignition and Tune-Up Products Brands For Your 2003 Chevrolet Trailblazer Ext

Trusted Ignition and Tune-Up Products OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 2003 Chevrolet Trailblazer Ext running right for years to come. In our inventory you’ll find brands like ACDelco, Autolite, NGK, and even more.

Popular Carquest Premium Ignition and Tune-Up Products

You’ll find popular Carquest Premium brand products across Ignition Coils and Boots. All are waiting to get your 2003 Chevrolet Trailblazer Ext back on the road. Some of the top-rated Carquest Premium products in these categories are:

Top-Rated Autolite Iridium Ignition and Tune-Up Products


If Autolite Iridium are what you’re looking for, our inventory holds plenty. We stock Autolite Iridium brand Ignition and Tune-Up Products for your 2003 Chevrolet Trailblazer Ext, and some of our most reviewed Autolite Iridium parts include:

FAQs for 2003 Chevrolet Trailblazer Ext Ignition and Tune-Up Products

What are the most purchased Ignition and Tune-Up Products for the 2003 Chevrolet Trailblazer Ext?

Out of 86 Ignition and Tune-Up Products for the 2003 Chevrolet Trailblazer Ext, the most popular in our inventory are:

What are the top-rated 2003 Chevrolet Trailblazer Ext Ignition and Tune-Up Products?

Top-rated Ignition and Tune-Up Products for your 2003 Chevrolet Trailblazer Ext based on customer reviews/ratings are:
DiamondFIRE Automotive Spark Plug: More Power, Saves Gas
from $8.49
(176)
DiamondFIRE Automotive Spark Plug: More Power, Saves Gas
“Great spark plug!!!!”
Double Platinum Spark Plug: Platinum Firing, Superior Durability, Longer Life
from $6.49
(102)
Double Platinum Spark Plug: Platinum Firing, Superior Durability, Longer Life
“Car runs smooth now with better gas mileage”