Question about 1999 GMC Suburban
I have the exact same problem you described. it starts, then won't start again, but instead runs one second and stops. I can attempt to start it dozens of times and it still only catches and runs for one second. let it sit for an hour and it starts fine. Is intermittent but getting much worse. once started, it runs fine until I turn it off again. Have you solved it? if so, can you share any info to help me out?
It is possibly a PASSLOCK problem. Before you start the vehicle, place ignition in RUN and observe the "SECURITY" light. Under normal conditions, it should go out after about 5 seconds. Once the PASSLOCK is activated, the vehicle wil not start for 10 minutes. If you have access to a OBD-II code reader, you will see a code stating a problem with the security feature, code P1626. The problem is most likely a intermittant failure of the contact in the ingnition switch responsible for this signal.
Posted on Jan 06, 2009
It's the ignition switch on the colum. I found it too hard so I took it to a shop. It's around $150 for the part. The shop said its a fairly common problem.
Posted on Jan 07, 2009
Get the fuel pump checked out . Make sure there is enough presure making it up to the injecters, also replace the fuel filter. The problem will only get worse and then it won't start at all.
Posted on Dec 30, 2008
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Posted on Jan 02, 2017
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