K 1500 Truck 4WD V8-5.7L VIN R (1997)
Starter Motor: Testing and Inspection
Starter Draw Test - SD Starter Motor
TOOLS REQUIRED:
J 39200 Digital Multimeter
J 35590 Adapter, or equivalent.
IMPORTANT
Verify that both batteries are in good condition. Refer to Battery.
NOTICE: Never operate the starter motor more than 15 seconds at a time without pausing to allow it to cool for at least 2 minutes. Overheating, caused
by excessive cranking, will damage the starter motor.
1. Disable the fuel system by removing the fuel solenoid fuse.
2. Calculate the current draw, and select the 200 A or 2000 A scale on the current clamp.
3. Zero the current clamp and clamp the tool to the negative battery cable.
4. Crank the engine and observe the meter readings. The reading should be 330 to 360 amperes. If the amperage is over 360 amperes, an internal
starter failure may be the cause. If the amperage is under 330 amperes, a battery cable or connection may be the cause.
