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 MANUALSCHEVROLET1993BLAZER FULL SIZE V8-350 5.7LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULETECHNICAL SERVICE BULLETINSECM CONNECTOR - LUBRICANT DOES NOT CAUSE MALFUNCTION
1993 Chevrolet Blazer Full Size V8-350 5.7L
ECM Connector - Lubricant Does Not Cause Malfunction
1993 Chevrolet Blazer Full Size V8-350 5.7LSECTION ECM Connector - Lubricant Does Not Cause Malfunction
Number: 93-259-8B
Section: 8B
Date: JULY 1993
Corporate Bulletin No.: 368104
ASE No.: A6
Subject:
LUBRICANT ON ECM CONNECTOR DOES NOT CAUSE A MALFUNCTION
Model and Year:
1993 ALL TRUCKS
When servicing an ECM on a 1993 truck, the technician may find light grease applied to the connector. The lubricant is applied to aid in the assembly process and will not interfere with electrical connections or have an adverse affect on the ECM, ECM connector, wiring etc.
When diagnosing an ECM or wiring condition, be aware that the lubricant is not the cause. The lubricant used is only to aid the assembly line operator and is not available commercially in small quantities. In any case, in the repair
shop environment no lubricant is necessary, therefore, no attempt should be made to substitute lubricant. Substitutes may interfere with electrical connections, deteriorate connectors or wire insulation over time.
NOTE:
Lubricant applied to an ECM connector during production assembly will not cause a problem. Applying lubricants commonly found in a repair shop to an ECM connector may cause a problem especially since no lube is needed.
Section: 8B
Date: JULY 1993
Corporate Bulletin No.: 368104
ASE No.: A6
Subject:
LUBRICANT ON ECM CONNECTOR DOES NOT CAUSE A MALFUNCTION
Model and Year:
1993 ALL TRUCKS
When servicing an ECM on a 1993 truck, the technician may find light grease applied to the connector. The lubricant is applied to aid in the assembly process and will not interfere with electrical connections or have an adverse affect on the ECM, ECM connector, wiring etc.
When diagnosing an ECM or wiring condition, be aware that the lubricant is not the cause. The lubricant used is only to aid the assembly line operator and is not available commercially in small quantities. In any case, in the repair
shop environment no lubricant is necessary, therefore, no attempt should be made to substitute lubricant. Substitutes may interfere with electrical connections, deteriorate connectors or wire insulation over time.
NOTE:
Lubricant applied to an ECM connector during production assembly will not cause a problem. Applying lubricants commonly found in a repair shop to an ECM connector may cause a problem especially since no lube is needed.
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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.