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 MANUALSCHEVROLET1993S10/T10 P/U 2WD V6-173 2.8LREPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULETESTING AND INSPECTIONINITIAL INSPECTION AND DIAGNOSTIC OVERVIEW
1993 Chevrolet S10/T10 P/U 2WD V6-173 2.8L
Initial Inspection and Diagnostic Overview
1993 Chevrolet S10/T10 P/U 2WD V6-173 2.8LSECTION Initial Inspection and Diagnostic Overview
Flow Of Diagnosis:
1. Verify that the problem exist and verify whether the problem is a intermittent or a constant problem. DO NOT use the A-CHARTS or TROUBLE CODE CHARTS for diagnosis of intermittent problems.
NOTE: For further information, use the DRIVEABILITY WORKSHEET and the VEHICLE REPAIR HISTORY forms under INFO TYPE MENU / TECHNICAL MANAGEMENT SUPPORT / SERVICE CONSULTANT under the main menu.
2. Check to make sure vacuum and vapor hose routing is correct and that hoses are not split or cracked. Check to make sure all the electrical connections to sensors and solenoids are clean and have tight connections. Check to make sure all engine grounds are clean and have good connections.
3. Check for updated diagnostic procedures warranty or recall information.
4. Testing and Inspection This checks to make sure that the computer is functioning properly and that the "SERVICE ENGINE SOON LIGHT" is working. This is the starting point for the diagnosis of the problem, and this circuit check will direct you to the proper test procedure.
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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.