Engine will not crank over starter not working?

If he doesn't have a pro scanner the programmer won't be given to him. Unles it's the aftermarket one then they will. Make sure he is getting a good connection at aldl andpower as it may be a connection problem as well.

What was the loud noise? Can you describe it? A boom, a back fire, a door falling off, lol.
Where did it sound like the noise came from? Back, front, under the hood?

Rich

A fourth party diagnosis is very difficult. And vague information makes it even harder. So far I haven't gotten enough information to even make a guess at what it could be. The sky is still the limit.

At this point I need to know what the noise sounded like if you could ask the person who was driving.

Also, your title says no crank no start. What does it do when you turn the key? Nothing? One click? Several clicks? Do the dash lights come on when you turn the key on? Do any lights work?

I need these details for a starting point and I can go from there. Thank you

Rich

Does the vehicle have power? Lights, dash lights, blower, brakes, head lights? Any of that?

How do you know 2 cylinders were full of gas? You cant see that so how did you confirm it? And what is full of gas? Like literally full? Or the plugs were wet when they were pulled?

When it just clicks, is it 1 click or a continuous clicking?

Rich

If I may, the engine does not crank over correct? (starter not working) can I ask if the security light is flashing when you try to start it? If so this guide can help you reset the system:

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

This guide can help as well:

https://www.2carpros.com/articles/starter-not-working-repair

Please run down these guides and report back.

Can you take a video of the engine cranking over so I can see if the engine is in okay shape please? Can you please shoot a quick video with your phone so we can see what's going on, that would be great. You can upload it here with your response.

Good afternoon,

I attached the wiring diagram for the starting for the truck.

Does the security light go out with the light on after about 10 seconds?

Did you try it in neutral?

Roy

Hello and welcome to 2CarPros. Just wanted to jump in and state there is a bulletin for a faulty ignition switch. Here is the bulletin:

Collision

 49

2004 Chevy Truck Silverado 2500 4WD

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V8-6.0L VIN U

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Ignition Switch - Intermittent No Crank/Dead Battery

Vehicle Starting and Charging Technical Service Bulletins Ignition Switch - Intermittent No Crank/Dead Battery

IGNITION SWITCH - INTERMITTENT NO CRANK/DEAD BATTERY

Bulletin No: 04-06-03-002

Date: February 05, 2004

INFORMATION

Subject:
Diagnostic Information for Intermittent Vehicle No Crank/Dead Battery

Models:
2004 Buick Rainier
2000-2004 Cadillac Escalade
2002-2004 Cadillac Escalade EXT
2003-2004 Cadillac Escalade ESV
1998-2004 Chevrolet Blazer, S-10 Pickup
1999-2004 Chevrolet Silverado
2000-2004 Chevrolet Suburban, Tahoe
2002-2004 Chevrolet Avalanche, TrailBlazer, TrailBlazer EXT
2003-2004 Chevrolet Express
1998-2004 GMC Jimmy/Envoy, Sonoma
1999-2004 GMC Sierra
2000-2004 GMC Yukon, Yukon XL
2002-2004 GMC Envoy, Envoy XL
2003-2004 GMC Savana
2004 GMC Envoy XUV
1998-2004 Oldsmobile Bravada
2003-2004 HUMMER H2

When diagnosing a concern regarding an intermittent vehicle no crank or dead battery, technicians should remove and reinstall the ignition switch using the Ignition Switch Replacement procedure in the Steering Wheel and Column section of SI. The ignition switch may have been misindexed in the steering column during a previous replacement.

If the ignition switch is misindexed in one direction, the ignition switch circuits will not be completely open when the ignition switch is in the OFF position with the key removed. This may result in lights remaining on or instrument panel lights illuminating, which will drain the battery. If the ignition switch is misindexed in the opposite direction, the ignition circuits will open correctly but the ignition switch may not close the crank circuit properly when the ignition key is turned to the crank position. This will result in a no crank concern.

Since you have no power to the solenoid then the ignition switch is not properly indexed to have power to the solenoid. Replace the switch first or call GM for a goodwill and let us know if this was the issue.

Nice truck. When you say the truck will not crank over you mean the engine starter works but the engine will not run or the starter is not working? This guide can confirm the starter motor being bad and the next guide will walk you through the replacement.

https://www.2carpros.com/articles/starter-not-working-repair

and

https://www.2carpros.com/articles/how-to-replace-a-starter-motor

Please run down these guides and report back.

Hello, I am Danny.

If you have access to a code reader/scanner and get back to use what code is stored for the Check Engine Light that would really help. Most auto parts stores offer the code reading for free- Pep Boys,O'Reilly's, AutoZone. I have attached a tutorial showing what is involved. Hope this helps and feel free to ask any questions.Thanks for using 2CarPros.
Danny-

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

It sounds like the battery is weak. To be sure these guides can help us fix it

https://www.2carpros.com/articles/starter-not-working-repair

and

https://www.2carpros.com/articles/car-battery-load-test

Let us know what happens and please upload pictures or videos of the problem.