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Ask Chad Farhat Your Own Question
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Chevy
Satisfied Customers: 3950
Experience:  Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicles A6 - Electrical / Electronic systems A7 Heating / Air Conditioning systems
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No start, 5.3 silverado Yes, 05, Yes Replaced fuel pump, It

Customer Question

No start
JA: Will the headlights turn on? Is the battery fully charged?
Customer: 5.3 silverado Yes
JA: What year is your Silverado?
Customer: 05
JA: Are you fixing your Silverado yourself? What have you tried so far?
Customer: Yes Replaced fuel pump
JA: Anything else you want the mechanic to know before I connect you?
Customer: It is not firing
Submitted: 11 months ago.
Category: Chevy
Expert:  Chad Farhat replied 11 months ago.

Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

Expert:  Chad Farhat replied 11 months ago.

hey how are you

1- so we have fuel pressure but no spark from ignition coils ?

2- is there power & ground at the coils ?

3-I sent you the wiring circuit for your engine just click on the blue link it will open up the circuit

4-there should be 12 volts one wire and ground from PCM, what are you missing

Please let me know

Thank You

Chad Farhat

ASE Certified Technician

Customer: replied 11 months ago.
I'm going to take a look but I'm no electrician. 3 times in a two day period the truck quit while driving down the road. It was like it was stalling but only for a second. The third day the truck quit. It would crank but not start. 200k miles. Thanks.
Expert:  Chad Farhat replied 11 months ago.

you welcome

also do a wiggle test on the harness have somebody cranking to start and you move the harness while they start it especial at the coil & injector areas.

Please let me know if you need anything else on it, just reply back and we will continue

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Thank You
Chad Farhat
ASE Certified Technician