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.
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HOMESERVICE MANUALSCHEVROLET2005BLAZER 4WD V6-4.3L VIN XREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - IGNITION SYSTEMIGNITION CONTROL MODULESERVICE AND REPAIR
2005 Chevrolet Blazer 4WD V6-4.3L VIN X
Ignition Control Module: Service and Repair
2005 Chevrolet Blazer 4WD V6-4.3L VIN XSECTION Service and Repair
IGNITION CONTROL MODULE REPLACEMENT
REMOVAL PROCEDURE
1. Disconnect the electrical connector (3).
2. Remove 2 screws (4) holding the ignition control module (2) and the heat sink (1) to the bracket.
3. Remove the ignition control module and heat sink.
INSTALLATION PROCEDURE
1. Install the ignition control module (2) and the heat sink (1) on the bracket with the 2 screws (4).
NOTE: Refer to Fastener Notice in Service Precautions.
Tighten the screws to 3.5 N.m (31 lb in).
2. Reconnect the electrical connectors (3).
RENDER: 1.0x
NO RELATED
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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.