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 MANUALSCHEVROLET1988S10/T10 BLAZER 4WD L4-151 2.5LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMIGNITION CONTROL MODULESERVICE AND REPAIR
1988 Chevrolet S10/T10 Blazer 4WD L4-151 2.5L
Ignition Control Module: Service and Repair
1988 Chevrolet S10/T10 Blazer 4WD L4-151 2.5LSECTION Service and Repair
EST Distributor With Hall Effect Switch:
REMOVE OR DISCONNECT
NOTE It is not necessary to remove ignition distributor assembly from engine.
- Distributor cap and rotor.
- Connectors from module.
- Two module attaching screws.
- Lift module from housing and remove.
INSTALL OR CONNECT
NOTE: Do not wipe silicone grease from metal face of module or distributor base (where the module seats), when reinstalling the same module. If new module is to be installed clean distributor module base and spread new silicone grease on base and metal face of ignition module. The purpose of the silicone grease is to cool module.
- Module onto housing.
- Module attaching screws.
- Connectors to module.
- Rotor and cap.
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.