no crank no start

2015 CHEVROLET SILVERADO
100,000 MILES • 6.0L • AUTOMATIC • ELECTRIC
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ARI_1
  • MEMBER
  • 1 POST
i have 2015 chevy Silverado 2500 no start no crank,
no communication with with ECM and i can't find fuel on Alldata schematic for fuel module that under rear bed
please i need help
Sep 10, 2026 at 7:58 PM
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KRAKENAUTO
  • ✓Experienced Mechanic
  • 74 POSTS
If your getting no signal to the ECM we first need to address that since it's the brain of the entire truck. A few suggestions are below to start with and let us know the results:

In the main fuse box. Inspect fuse F44 (ECM/Powertrain) and F10 (Ignition/Powertrain relays). If you see any blown, let us know and replace with same amperage.

On this truck, check the ground strap running from the engine block to the firewall, as well as the chassis grounds near the front left fender/headlight area. Ensure connections are clean, tight, and free of corrosion.

If these both are good, let us know so we can continue to assist.
Sep 10, 2026 at 10:43 PM
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