While driving,car started losing power. message center flashed power reduced. Truck cut out. Tried restarting and on third or fourth try, truck started and drove like nothing was wrong.
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2004 GMC Canyon Question: Reduced Power on Message Board
Visitor, May 03, 2010, 20:07
I had this same problem. It's the PCM (Power Control Module) Don't know why they do this, but it needs to be replaced... hope that helps you.
Answer #2thercattrainer February 17, 2014, 21:44Rookie
It could either be the traction control, rpm limiter or BCM causing this loss in power. I had the same thing happen to me and what I did was reset the BCM by disconnecting the negative battery cable from the battery. I then proceeded to touch both positive and negative cables together to discharge the capacitor so I wouldn't have to wait hours to reset the BCM computer. After I did this, I waited about 30 minutes before I reconnected the negative cable back to the battery. After that, I had no problem with sudden loss of power while driving at highway speeds.