1999 Chevy Silverado Starting issues

Tiny
DOCTORWELBE
  • MEMBER
  • 1999 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 114,000 MILES
99 Silverado
Sometimes when I start the engine, it starts but then it dies, When this happens it will not start for 5 or 10 min. Ive checked the fuel pressure and it has between 55 or 60 psi. Ive also have checked the spark when it does this and it is getting spark. It has never died when driving, always when starting. It sounds like it is starting and then dieing. Thanks for any help Mark
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Saturday, January 23rd, 2010 AT 3:33 PM

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Tiny
SCOTTY DEE
  • MEMBER
When it dies, does the fuel pressure gauge gradually drop or instantly?
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Wednesday, January 27th, 2010 AT 8:24 AM
Tiny
DOCTORWELBE
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No it stays at about 55 psi. When it is running it is at about 60
psi. When
> I turn it off, it is a gradual drop from 60 psi to 55 psi Thanks
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Wednesday, January 27th, 2010 AT 5:37 PM
Tiny
SCOTTY DEE
  • MEMBER
Okay good, we know the fuel pressure is adequate. We need to also verify there is power to the pump when the next no-start ocuurs.

The next step is to connect a scan tool and see if there is any available freeze frame data and/or codes stored in memory.
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Wednesday, January 27th, 2010 AT 5:46 PM
Tiny
DOCTORWELBE
  • MEMBER
After much internet research I found what was causing my truck
to start then shut off. It is the pass lock 2 security on my truck. My truck has pass lock 2 built in the ignition switch, when I went to start it, the ignition switch was telling the BCM that it was not the right key, which in turn cuts off the fuel to the injectors. After 10 min it resets itself. I found out 3 different fixes for this problem, 1. Buy a 70.00 module to fix it. 2. Find the wires and put a toggle switch on 1 of the wires (if you forget to flip the switch after starting, it records codes in the computer) 3. (The method I used) take the cover off the steering column, find the wires coming out of the switch, should be 3 wires 1. Yellow, 2. Red/white 3. Orange/black. You cut the yellow wire into (leave enough wire to work with)the yellow wire coming out of the switch will no longer be used so tape it up, then strip some insulation off the orange/black wire (do not cut into)take a ohm meter and turn the switch on. Do not start. Check the resistance between the orange/black & yellow wire going away from switch. When you get the ohm reading, find a resistor (Radio Shack) somewhere over the value that the meter read. Now solder this in temporary between the orange/black & yellow wire going toward the BCM. Try to start, if it doesn't start wait 10 min then try again. Sometimes you may have to go with a bigger size resistor but I promise this works because it fixed my truck
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Monday, March 22nd, 2010 AT 6:57 PM

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