Engine will not start

2004 CHEVROLET SILVERADO

238,000 MILES • 4.3L • V8 • 2WD • AUTOMATIC

JOHNNYCRASH1980

MEMBER
2 POSTS

I've got have the truck listed above that won't even attempt to start. Brand new battery, alternator, starter and starter module in the fuse box. Voltage is at around 13, turn the key and won't even make a sound. What is the most likely issue?

Jan 4, 2022 at 9:21 PM

SQM

✓Experienced Mechanic
6,383 POSTS

Hello,

It sounds like it could be an issue with the ignition switch. The switch is the electrical component that is where the lock cylinder attaches inside the steering column.
The connectors inside that switch can get loose or corroded overtime and this can lead to no start. This typically will make no sound when the key gets turned to the start position.

Is your security light on? That could also trigger no start like what you are experiencing.

Also, you want to make sure all the wires are attached properly and there is no corrosion. When you turn the key to on position do all the dash lights come on?

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Let me know what else you might be experiencing.
Thank you.

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Jan 5, 2022 at 1:02 AM

JOHNNYCRASH1980

MEMBER
2 POSTS

All the lights are on including the alarm system light. It's weird because it will start for 2-3 weeks straight then stop for an uncertain amount of time.

Jan 5, 2022 at 2:57 AM

SQM

✓Experienced Mechanic
6,383 POSTS

Are you getting any codes?
Also, the alarm light can trigger a similar no start issue.

https://www.2carpros.com/articles/how-to-reset-a-security-system

Jan 5, 2022 at 5:10 AM