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No electrical?

Tiny
DIXIEMATHIS
  • MEMBER
  • 2003 CHEVROLET BLAZER
  • 5.7L
  • 6 CYL
  • 4WD
  • 128,000 MILES
Went to leave work, turned on ignition, dash lights came on. Turned key over, nothing. Lights went out. Connected jump cables and key was in off position, but could hear starter cranking. But no lights on dash.
Sunday, September 29th, 2019 AT 2:45 AM

25 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
Welcome to 2CarPros.

The most common cause for the symptoms you described is a bad connection. Most times, it's right at the battery. The terminals get loose or corroded.

Take a look through this link and let me know if it helps. If it doesn't, let me know.

https://www.2carpros.com/articles/everything-goes-dead-when-engine-is-cranked

If you get back to me, let me know if this is an S-10 blazer or full size. You indicated a V6 but the 5.7 is a V8, so it could be either models.

Take care,
Joe
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Sunday, September 29th, 2019 AT 5:43 PM
Tiny
RWDANIEL3078
  • MEMBER
  • 2 POSTS
  • 1999 CHEVROLET BLAZER
  • 4.3L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 100,000 MILES
My low beam lights were not working, I found a wire that looked burnt at the wiring harness junction under the dash as I was taking this apart it sparked. I reinstalled it and checked all the fuses, turned the key it started to turnover and then just stopped. Once this happened there was no electrical power to anything, I checked all the doses again and nothing was blown. I checked the fuse link under the battery and it looks ok. Still no electrical pore to anything.
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Saturday, January 30th, 2021 AT 8:44 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It sounds like the battery cables are dirty this guide can help us.

https://www.2carpros.com/articles/everything-goes-dead-when-engine-is-cranked

or you probably hooked the wire to the wrong place for one check the things I've pointed out in first pic second pic is where wires go to headlight switch and what fuses to check. Check out the diagrams (Below). Please let us know what happens.
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Saturday, January 30th, 2021 AT 8:44 AM (Merged)
Tiny
RWDANIEL3078
  • MEMBER
  • 2 POSTS
All fuses are good. The only thing that was disconnected was the harness from the junction box under the dash.
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Saturday, January 30th, 2021 AT 8:44 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Then make sure the junction box was connected correctly and pins are not bent going into the wrong place your problem has to be in that area.
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Saturday, January 30th, 2021 AT 8:44 AM (Merged)
Tiny
SWIFT
  • MEMBER
  • 1 POST
  • 1998 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 102,000 MILES
Hello, After getting my blazer back from the repair shop and driving it home, after about 2 hours the was no power to anything. When turning the key nothing happens. I tried jumping it but even with cables hooked up the car would not power up even enough to lock or unlock the doors. Can you give me a direction to look in. Thanks
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Saturday, January 30th, 2021 AT 8:44 AM (Merged)
Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
Take the old battery out and put a new one in or one that you know is good, but before that, put the car in neutral and try to start it(with your e=brake on). If not try the battery and check connections for possible corrosion
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Saturday, January 30th, 2021 AT 8:44 AM (Merged)
Tiny
ARCENIO
  • MEMBER
  • 1 POST
  • 1997 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 133,920 MILES
My Blazer is not getting any electricity to anything. I replaced the ignition switch and the key lock cylinder about four months ago. Even while replacing these, I had electrical power to the doors and lights, but now I have nothing. The truck was turning off when I would put it into gear before it completely wouldn't start. The battery also is new. Could it possibly be the solenoid on the starter?
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Saturday, January 30th, 2021 AT 8:44 AM (Merged)
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
No. If there is no power anywhere I would suspect battery cables at the batteryor burnt fusible links at the under hood junction block, also check the power stud at the under hood fuse block. Also check the ground at the engine block that the negative battery cable goes to. Check wiring to the starter.
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Saturday, January 30th, 2021 AT 8:44 AM (Merged)
Tiny
RANDYJOBES
  • MEMBER
  • 4 POSTS
  • 1996 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 115,000 MILES
When you turn key to on position, I have no dash indicator lights and no fuel pump pressure and no daytime running lights.
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Saturday, January 30th, 2021 AT 8:44 AM (Merged)
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Make sure battery has a full charge and all connections coming and going are clean and tight. Check fusible links and fuses for voltage, you have to use a voltage tester. You may have to check feed to and from ignition switch.
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Saturday, January 30th, 2021 AT 8:44 AM (Merged)
Tiny
RANDYJOBES
  • MEMBER
  • 4 POSTS
We got power to every wire we tested so far around the engine compartment.
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Saturday, January 30th, 2021 AT 8:44 AM (Merged)
Tiny
RANDYJOBES
  • MEMBER
  • 4 POSTS
I also noticed that during the last week, car stalled twice but started right back up and when intially starting the car would take 3-4 seconds before firing instead of 1-2 seconds as normal.
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Saturday, January 30th, 2021 AT 8:44 AM (Merged)
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Just to add, fusible links A & B are voltage to ignition switch. Those links are at batttery junction box, my info says, left rear of engine for junction box.
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Saturday, January 30th, 2021 AT 8:44 AM (Merged)
Tiny
RANDYJOBES
  • MEMBER
  • 4 POSTS
Will check those and get back to you.
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Saturday, January 30th, 2021 AT 8:45 AM (Merged)
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
There should be two red wires that supply feed to ignition switch. In the diagram, voltage feed to ignition switch are on top, feed from ignition switch on bottom. Check the ignition switch wiring.
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Saturday, January 30th, 2021 AT 8:45 AM (Merged)
Tiny
MRKWESA
  • MEMBER
  • 1 POST
  • 1996 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 140,000 MILES
1996 chevy blazer, car has no power at all. Battery is ok, no power to anything. All fuses ok. Alternator was replaced 1 week ago.
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Saturday, January 30th, 2021 AT 8:45 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check the fusible links ( they are usuallysmaller wires connected to larger ones.) I've sent the schematic along.
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Saturday, January 30th, 2021 AT 8:45 AM (Merged)
Tiny
CASSIDY ANN HARRISON
  • MEMBER
  • 1 POST
  • 1995 CHEVROLET BLAZER
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
My vehicle will not start. No power at all not in the dash or turn over. I have replaced the battery. However something wrong unless I unplug it when not in use it looses power and will not start and when I jump start it the wires in the top driver side smoke. Any ideas? I feel like I need to replace wires that have been spliced and taped or possibly fuses? I am not sure but this girl needs some advice because it looks like I am fixing it myself.
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Saturday, January 30th, 2021 AT 8:45 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check fuses and fusible link by starter first. check for damaged wires etc. if bad you need to find the circuit causing it. See link.
https://www.2carpros.com/articles/car-battery-dead-overnight
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Saturday, January 30th, 2021 AT 8:45 AM (Merged)

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