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2002 Silverado 1500 wont crank, turn over unless hold key on

unless hold key in start position from 5 seconds to two minutes

2002 Silverado 1500 wont crank, turn over unless hold key on

Postby advcomps [OP] » Aug 19 2013, 7:43pm

2002 Silverado 1500 wont crank - turn over unless hold key in start position from 5 seconds to two minutes. after holding the key in start mode for a few seconds or a couple of minutes, it will start and run with no problem. if you turn it off and start it again quickly, it will usually crank and start right up. the time needed to hold the key in start position is totally random.

some of the things that I have tried already...
verified that all battery and starter cables are tight
verified main ground from battery and engine ground strap are tight
tapped on starter and tapped on steering column below key
left key in the on position for 15 minutes, then turned off and tried to start again. this re-sets the security system

the starter works great and the battery is less than a year old.

I am thinking that it could be the key switch assembly or the key alarm switch assembly. I just wanted to get some suggestions before I start replacing parts.

thanks in advance
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Re: 2002 Silverado 1500 wont crank, turn over unless hold ke

Postby ASTE25ASTE25 is online! » Aug 20 2013, 3:52am

I'd suspect a bad ignition switch.
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Re: 2002 Silverado 1500 wont crank, turn over unless hold ke

Postby gmcultr » Aug 20 2013, 7:01pm

Kinda sounds exactly like how my truck did when my old pump got weak... finally got enough fuel and turns on over. At first it was completely random.

Try priming your truck before you crank.. key off key on key off key on a few times then try to crank.

sent from my Verizon Wireless Galaxy SIII
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Re: 2002 Silverado 1500 wont crank, turn over unless hold ke

Postby advcomps [OP] » Aug 20 2013, 10:43pm

ASTE25 wrote:I'd suspect a bad ignition switch.


thank you so much for your help. Today I replaced the electrical ignition switch in the steering column but I still have the same problem. I don't know what to do next.

if I replace the mechanical cylinder lock, then I will also have to replace the keys and reprogram my security system.

Tomorrow I'm going to have a friend hold the key on while i check for voltage at the solenoid. If I have voltage there, I know the problem is in the solenoid or starter.
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Re: 2002 Silverado 1500 wont crank, turn over unless hold ke

Postby advcomps [OP] » Aug 20 2013, 10:46pm

gmcultr wrote:Kinda sounds exactly like how my truck did when my old pump got weak... finally got enough fuel and turns on over. At first it was completely random.

Try priming your truck before you crank.. key off key on key off key on a few times then try to crank.

sent from my Verizon Wireless Galaxy SIII


Thanks for your help, but my engine is not turning, the starter is not working unless I hold the key for 5 seconds or two minutes.
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Re: 2002 Silverado 1500 wont crank, turn over unless hold ke

Postby welchea » Feb 06 2014, 4:41pm

Did you find a solution to this problem? I have been having the same problem and its happening more frequently. Local GM Dealer can't fiqure it out either.
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Re: 2002 Silverado 1500 wont crank, turn over unless hold ke

Postby Highway68 » Feb 12 2015, 1:55am

I'm having the exact same problem! Did you ever narrow it down to one specific component?
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Re: 2002 Silverado 1500 wont crank, turn over unless hold ke

Postby Boomhauer » Feb 18 2015, 2:58am

Bump, I am having the same problem,. I have check all the grounds and swapped out the starter relay. Any help or advise would be appreciated.
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Re: 2002 Silverado 1500 wont crank, turn over unless hold ke

Postby neilster1 » Feb 24 2015, 2:51am

I have this issue on my 04 Sierra. Starter relay didn't fix it. I wish it would fail completely so it could be diagnosed.
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Re: 2002 Silverado 1500 wont crank, turn over unless hold ke

Postby spotco2 » Feb 24 2015, 5:45am

I don't know what the answer is but it should not be the ignition lock cylinder since it is simply mechanical and doesn't do much more than move the electrical ignition switch.
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