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Engine will not crank over?

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Clicking? Or nothing at all? If you hear a click, then either the battery is weak, or the starter, possibly bad battery cable connections, check and clean both ends of BOTH cables! Dissconnect negative(-) first, and put it on last! If no click the starter relay is no good! Other possibility is the theft system, what does the little dash light do with the key in the on possition? If it goes out, it OK. Starter relay is in the underhood fuse block. Your owners manual will show which one it is! Try swapping two of your relays.
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Thursday, September 3rd, 2020 AT 4:51 PM (Merged)
Tiny
JRCRAZYX2
  • MEMBER
  • 2 POSTS
I checked the security light, and it did go off, so should be fine. However, there is NO clicking, so I pulled the relay like you said. I'm not sure how to tell if it is bad, but there is noticeable discoloration on one of the prongs in comparison to the other relays right next to it. I guess I will replace that and see what happens. Thanks so much for the quick response.
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Thursday, September 3rd, 2020 AT 4:51 PM (Merged)
Tiny
CHEVYYMANN
  • MEMBER
  • 5 POSTS
  • 2002 CHEVROLET SILVERADO
  • V8
  • 2WD
  • AUTOMATIC
  • 95,000 MILES
My 02 silveradro will not start unless I fiddle with the key for a long time. And im not sure why this is happing the key works fine it just wont start unless I fiddle with the key for a long time. Any help would be great.
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Thursday, September 3rd, 2020 AT 4:51 PM (Merged)
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Will it crank if you dont fiddle with it?
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Thursday, September 3rd, 2020 AT 4:51 PM (Merged)
Tiny
CHEVYYMANN
  • MEMBER
  • 5 POSTS
Yes it will crank and start only after fiddling with it for a while, I thiught it might be the key itself but I had a new one made and it still dose the same thing.
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Thursday, September 3rd, 2020 AT 4:51 PM (Merged)
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
IF you DONT fiddle with it will the vehicle still try to crank just not fire?

And what do you mean fiddle?
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Thursday, September 3rd, 2020 AT 4:51 PM (Merged)
Tiny
CHEVYYMANN
  • MEMBER
  • 5 POSTS
Fiddle meaning I have to turn the key back and forth continously till it starts. When I turn the key it dosen't even fire unless I fiddle with it like a mad man.
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Thursday, September 3rd, 2020 AT 4:51 PM (Merged)
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Will the engine crank though? You know starter engage go rrr, rrr, rrr, rrr
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Thursday, September 3rd, 2020 AT 4:51 PM (Merged)
Tiny
CHEVYYMANN
  • MEMBER
  • 5 POSTS
No the engine dose not crane unless I countously turn the key on and off till the engine finally does start.
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Thursday, September 3rd, 2020 AT 4:51 PM (Merged)
Tiny
WOLVERINEPRIDE
  • MEMBER
  • 2 POSTS
  • 2002 CHEVROLET SILVERADO
Computer problem
2002 Chevy Silverado V6 Two Wheel Drive Automatic 86,000 miles

I went out to start my truck, and it would't turn over, I thought my Battery was the problem so I jumped it and it started, three days later I tried to start my truck and it would't start, so I tried jumping agian, and still would not start, I unpluged the cables and took my battery in to charge, well it needing to be charged wasnt the problem, the battery was fully charged, I hooked my cables back to my battery, and pulled every fuse inside under my dash and under the hood to see if any were burned out and they were all fine. I went to start it and it started but I noticed my security light is on and my radio wont work. Thier is a little red light by my radio that is blinking. So I took my truck to work and 8hrs later it wouldnt start agian, Can you please help?
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Thursday, September 3rd, 2020 AT 4:51 PM (Merged)
Tiny
PEAR69
  • MECHANIC
  • 1,482 POSTS
You have a pass lock system module problem. Most likely the resistor inside the module is failing because your battery was low at one time or the other. Pass lock is a factory security feature that uses a resistor inside of your ignition switch to activate your fuel pump. When the battery voltage is low or when it is spiked ( as in the case of jumping the battery) this resistor can be damaged. Sorry to say, but I think this is your problem. The dealer is usually the only one who can properly test and fix this. Keep me posted.
You can temporarily disable the system and your truck should start. Here is how. Turn the key on but do not crank the engine. Leave the key in this position until the security light goes out. This should take about 15 or 18 minutes, then turn the key off for 6 seconds, then start the engine.
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Thursday, September 3rd, 2020 AT 4:51 PM (Merged)
Tiny
CHEVYYMANN
  • MEMBER
  • 5 POSTS
No crank no fire unless I countously turn the key on and off.
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Thursday, September 3rd, 2020 AT 4:51 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
If you have to play around with the key-replace ignition switch.
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Thursday, September 3rd, 2020 AT 4:51 PM (Merged)
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Agreed, why I was asking you if it cranked or not was trying to figure out if just sometimes it wouldnt turn over untill you turned it off and back on to crank again.

But sounds like the switch to me.
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Thursday, September 3rd, 2020 AT 4:51 PM (Merged)
Tiny
DUKIES13
  • MEMBER
  • 1 POST
  • 2002 CHEVROLET SILVERADO
Electrical problem
2002 Chevy Silverado Four Wheel Drive Automatic 97,000 miles

Hi I have a 2002 chevy silverado 4wheel drive 5.3 liter v8 and I was sitting in a parking lot warmng up my truck then I went across the street to run in and I shut my truck off and then tried to start it and nothing happened it looked as if the battery was dead bc my radio wouldnt come on. If I would let it sit a few mins then I could get my radio to turn on but it completley loses battery power if I try to turn it over
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Thursday, September 3rd, 2020 AT 4:51 PM (Merged)
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Th newer batteries can go out without any warning. A cell can open or short and it is dead.
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Thursday, September 3rd, 2020 AT 4:51 PM (Merged)
Tiny
DMS3412
  • MEMBER
  • 5 POSTS
  • 2002 CHEVROLET SILVERADO
Engine Mechanical problem
2002 Chevy Silverado V8 Four Wheel Drive Automatic

Replaced the starter, replaced the batter cables, made sure all cables are cleaned and tight. Battery is fully charged, and alternator is good. Here is the symptoms. When I turn the key on, everything works (lights etc) when I go to crank it, I get a click and all power goes out, then I get a clicking noise in the dash area. After a few seconds, power comes back on. Still no start. Please help! I need a diagnosis!
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Thursday, September 3rd, 2020 AT 4:51 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
There is a start relay in your underhood electrical center. Check tomake sure that is working. Or just replace it with another one in the electrical centertosee if that'sit. If it is thenreplace it.
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Thursday, September 3rd, 2020 AT 4:51 PM (Merged)
Tiny
DMS3412
  • MEMBER
  • 5 POSTS
I actually tried that. I swapped the starter and ignition relays and had the same results.
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Thursday, September 3rd, 2020 AT 4:51 PM (Merged)
Tiny
DMS3412
  • MEMBER
  • 5 POSTS
Could it be the ignition switch? I'd hate to go spend $100 bucks on one and it not be that. This really has me stumped. I really appreciate any help!
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Thursday, September 3rd, 2020 AT 4:51 PM (Merged)

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