gmc Workshop Repair Guides

GMC Yukon V8-350 57L Workshop Service & Auto Repair Manuals

Pick-Up Coil, Ignition|Testing and Inspection|Page 3648 > < With 4L60 Automatic Transmission or Manual Transmission|Page 3644
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Pick-Up Coil: Testing and Inspection

Fig. 4 Pickup coil test connections

Note

Make sure the ignition switch is "OFF".

1. Remove distributor cap.
2. Disconnect pickup coil connector from IC module.
3. Connect ohmmeter as shown in step 1, and flex pickup coil leads while observing meter. Meter should indicate infinite resistance at all times. If

not, pickup coil is defective.

4. Connect ohmmeter as shown in step 2, and flex pickup coil leads while observing meter. Meter reading should remain constant between 500 and

1500 ohms. If not, replace pickup coil.

Note

To replace the coil, remove the distributor.

Pick-Up Coil, Ignition|Testing and Inspection|Page 3648 > < With 4L60 Automatic Transmission or Manual Transmission|Page 3644