Question about 2005 GMC Canyon
The engine shuts off while im on the highway. I don't think its the battery, because the lights are still on when it the engine dies. I pull over to the side of the road, turn the key, and it starts up again right away.
Sounds like it may be a loose wire or connection that reacts at a firm bump. I'd check at the starter, and coil. Also check the battery ground at the body and block connections. Hope this will help. Best wishes.
Posted on Jan 17, 2009
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Jul 18, 2015 | GMC Cars & Trucks
This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control
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