Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 247 (ENGINE CONTROL SYSTEM - REMOVAL & INSTALLATION)IGNITION SYSTEMSIGNITION COILREMOVAL
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Ignition Coil: Removal
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Removal
WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
- Remove 4 bolts from the engine cover (1). See Figure .
- Remove engine cover (1).
- Disconnect all ignition coil (2) harness connectors. See Fig 1 .
- Remove mounting bolts (4) from the ignition coils. See Fig 1 .
- Remove the bolts (2) securing the wiring harness (1).
- Remove the wiring harness (1).
- Remove the ignition coils (3).
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.