My 2003 Silverado just stop starting by the key. I can hear a slight click but nothing I've checked all the fuses and relayies they are all good. So for the moment I've ran two wires from the relay to a push button just so it will start. Has anyone had this problem and can u help.

 

Did you try swapping the relay with another one?

 

Yes starting to think it's n the key switch. I have a 01 blazer just not sure if it would mess up something with the computer ant ideals???

 

Howdy, Josh! I take it you have a NO CRANK, NO START issue (just like me a few days ago with my 2002 Silverado.) Long story short, that recent winter storm system blasted through the Midwest here, and temps got to zero. My 4.3L V6 would not crank, would not start.

Step #1--Watch this YouTube--he's got a great "systems" approach.
Make sure you watch it all through first--he goes through all the problems with a NO CRANK, NO START!


OK, ok--you probably don't have all the test tools or gizmos that the mechanic in this You Tube has, BUT--it's all the issues he raises: FUSES, RELAYS, IGNITION SWITCH, STARTER, SOLENOID--get those tested best way you can!

I did all of this! Checked ALL the fuses for ignition system AND the "CRANK" fuse, plus replaced the starter relay. Still no crank, no start.

Step #2--Wife suggested that the "motor was too cold to start." Took her idea, grabbed my 1500 watt Harbor Freight Tools Dual Temp Hand held heat gun (High setting) crawled under the truck, played the heat gun on the starter motor, got back up, and she started right up!

Time to replace my faulty STARTER and/or solenoid atop it!

Hope the You Tube helps ya! It's a wealth of info.

 

Oh no it starts just fine off of a push button hot-wired in where the relay is at just won't do nothing from the key.

 

i know you solved your issue with a ground switch but i just had a similar problem happen today. NO CRANK NO START NO RUN. while i was testing relays and fuses my noticed the fuel gauge was reading empty. i had filled the tank yesterday so that was a problem. turns out the PCM2 fuse had corroded. once i dug out that corrosion and replaced the fuse, it started right up.