Occasional starting problems

[mlacy]

I have a 2000 Silverado and occasionally (about once every 2 or 3 months) it won't start. It usually happens if I'm in a hurry and let off the ignition before it fires up. Once this happens, it won't even try to fire. After about 10 - 15 minutes of sitting there, it will start fine. Is there some sort of security feature that might cause this? My security light comes on occasionally also - are they related?

 

Thanks,

Mike

[red02deuce]

I have this EXACT same problem and found your post searching for a lead to solving my problem. (2000 GMC Z71 Sierra)

 

My security light comes on once in a while when driving too.

 

On top of that, it has also developed a serious hesitation off the line. Once cruising all seems well.

 

I have cleaned the throttle body and MAS, new PCV valve, fuel filter, fuel pump assembly ~ 40k miles ago. Used a hand held code scanner but nothing came up.

 

I am going to take it to the dealer to see if they can pull a code or something. Maybe my hesitation problem is related.

 

 

I have a 2000 Silverado and occasionally (about once every 2 or 3 months) it won't start.  It usually happens if I'm in a hurry and let off the ignition before it fires up.  Once this happens, it won't even try to fire.  After about 10 - 15 minutes of sitting there, it will start fine.  Is there some sort of security feature that might cause this?  My security light comes on occasionally also - are they related?

 

Thanks,

Mike

 

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[ChevyTech007]

Sounds like a passlock sensor. Scan it for codes.