Question about GMC Cars & Trucks
I have 14 volts to the plug for the vent solenoid. When plugged in the solenoid doesn't work. But when battery voltage is applied directly to the solenoid, it works fine.
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Posted on Jan 02, 2017
that has a votec engine in it the fuel pressure is droping at knight and it takes 60 psi before the injectors will fire most likely cause fuel pump ,leaking injector ,or a feul pressure regulator
Posted on Jul 14, 2009
Voltage regulator is going bad. Have alternator tested or go ahead and have it replaced. Also this would be a good time to have the battery tested. Usually an alternator that is over charging will "cook" the battery causing it to not charge, not hold a charge, to losing the gel/electrolyte solution due to boil out.
Posted on Jul 17, 2009
There is a solenoid that open and closes with 12 volts, usually located close to the fuel filler tube area. This open to allow you to fill your tank, then closes after some inputs for the computer are satisfied, and then a pressure sensor verifies the system is working. First, make sure the cgas cap is tight, and if the light doesn't go away in a couple days of normal driving, get the solenoid checked.
Posted on Jun 23, 2010
The regulator is in the alternator. Did you check voltage at the battery? Nothing in the diagram jumps out at me. Is the check engine light on? Maybe we could get a hint if there was a trouble code.
Posted on Sep 26, 2010
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