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blaindsmith
06-03-2008, 08:43 PM
ok so the symptoms are

Voltage gauge on instrament panel shows 14V when key is out, 16V when key is on, and 18V when truck a idling regardless of whether lights, radio, or blinkers are on. Sometimes the power will flicker on and off for radio. Radio will die and truck will bog down if I flash high beams or use blinker. THis is at random times.

Battery and alternator are fine. Both were tested and voltage is normal when truck is off, idling, and under load.

Is the issue the central timer module (CTM)? PCM? Some ground? Any other module?

Any other tests I can run?