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Ignition

Tiny
LAZARO DELGADO JR.
  • MEMBER
  • 2005 CHEVROLET SILVERADO
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 12,000 MILES
Was running and just quit. Cranks but will not start. Replaced ignition switch module and crankshaft sensor. Has fuel pressure and fire on all spark plug wires but still will not start. Could the pass lock be engaged?
Monday, March 20th, 2017 AT 2:19 PM

1 Reply

Tiny
STEVE W.
  • MECHANIC
  • 12,958 POSTS
If the security light is off (and it works when you turn the key on then goes off) it isn't likely the security system.

Start by testing all the fuses with the key on. There are multiple power feeds to the ECM and some are part of other circuits. Check to see if the injectors are getting power. GM injectors like to short out and cause problems.
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Monday, March 20th, 2017 AT 6:50 PM

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