Engine not cranking

SINGLECABSILVER

MEMBER
2002 CHEVROLET SILVERADO
4.8L
V8
2WD
AUTOMATIC
260,000 MILES

The truck listed above is a 1500. My truck is not cranking I checked the ignition harness. I have no power to the white and yellow wire at the fuse box which I’m pretty sure are starter wires. Should I replace the harness?

Saturday, February 19th, 2022 AT 1:35 PM

6 Replies

JACOBANDNICKOLAS

MECHANIC
108,310 POSTS

Hi,

I just went through the wiring schematic and was unable to find any white/yellow wires other than a yellow from the neutral safety switch.

I attached the wiring schematic below of the starting system circuit. I highlighted two fuses to check. In addition to checking the fuses, confirm there is power to and from them. Here is a link you may find helpful:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Pics 3 and 4 are the fuse boxes. Pic 3 is inside the vehicle, and pic 4 is under the hood.

Let me know what you find.

Take care,

Joe

See pics below.

Images (Click to make bigger)

SPONSORED LINKS

Was this

answer

helpful?

Yes

Saturday, February 19th, 2022 AT 5:18 PM

SINGLECABSILVER

MEMBER
6 POSTS

Both fuses were good, the crank fuse under the dash is receiving no power and the fuse under the hood is receiving power. I slammed the hood out of frustration and my instrument cluster came back in and it cranked. I switched it off and on and the cluster was off and it didn’t crank again.

Was this

answer

helpful?

Yes

Sunday, February 20th, 2022 AT 1:34 PM

JACOBANDNICKOLAS

MECHANIC
108,310 POSTS

Okay, go back to the fuses under the hood that you checked and had power. They send power to the interior where you have no power. The breakdown is between the two.

In most cases, either there is a corrosion issue, a poor pin connection where the fuse pushes in, or a loose wire near the fuse.

Let me know.

Joe

Hang in there. We'll figure it out. But I do understand your frustration. Wiring issues can be a nightmare.

Was this

answer

helpful?

Yes

Sunday, February 20th, 2022 AT 7:14 PM

SINGLECABSILVER

MEMBER
6 POSTS

I don't see any loose wires or corroded wires anywhere near the fuse.

Was this

answer

helpful?

Yes

Monday, February 21st, 2022 AT 12:02 PM

SINGLECABSILVER

MEMBER
6 POSTS

Thanks a lot for your advice. I have a parts truck here and I ended up changing out the under-hood fuse box Just to see what would happen and I ended up fixing all my problems.