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Home >> Chevrolet >> 1989 >> G 10 Van V8-350 5.7L >> Repair and Diagnosis >> Technical Service Bulletins >> All Technical Service Bulletins >> A/T - Diagnosing Converter Lock-Up Problems >> Test # 1 - Checking For 12 Volts at Terminal -A- >> Regular Method

Regular Method

TEST # 1 (Regular Method)

CHECK FOR 12 VOLTS TO TERMINAL -A- AT TRANSMISSION

^ Check for 12 volts to terminal A at the transmission.

^ Raise the vehicle on the lift so the driving wheels are off the ground.




^ Connect the alligator clip of your test light to ground. Unplug the wires at the case and place the tip of your test light on the terminal marked A.

^ Do not depress the brake pedal.

^ Computer controlled vehicles: turn on the ignition and the tester should light.

^ All other vehicles: start the engine and bring to normal operating temperature.

^ Raise RPM to 1500 and the tester should light. If tester lights continue with Regular Method.

^ If the tester does not light go to Test # 2.