Codes p129d, u1510, p059f, p2535, the engine is not cranking over, the starter is not working?

2018 CHEVROLET SILVERADO

175,000 MILES • 5.3L • V8 • 2WD • AUTOMATIC

DAVIDD59

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No crank, no start. Jump across starter relay and starter turns motor over. does not turn over with key. No power to fuse 51 ECM. Installed new ignition switch, no change. Have DTC codes p129d, u1510, p059f, p2535. No ck engine light comes on when you turn the key to the run position. The security light comes on then goes out as it should. Any help with this problem and i can be generous and thankful. Thanks, David

Oct 23, 2023 at 11:08 AM

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I would turn the system on and check all fuses before we go any further. This guide can help:

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

If all fuses are okay, then I see the ignition switch fees into the BCM directly which is would remove and have tested or get a preprogrammed unit by searching Google or eBay. Here is the location:

P129D: This code is related to the Chassis Control Module

U1510: This is a communication code, specifically indicating a communication issue within the vehicle's network.

P059F: This code typically relates to the active grille air shutter "A" performance.

P2535: This code indicates a problem with the ignition switch run position circuit. This could be a problem with the wiring harness, or a bad relay.

I would clear all codes and then turn the system on without cranking the engine over to rerun the codes, Also, you may what to try a hard system reboot, here is a guide to help:

https://www.2carpros.com/articles/step-by-step-guide-performing-a-hard-system-reboot-for-your-vehicles-electronics-systems

If you get a preprogrammed unit, you won't need to program the unit. Check out the images (below). Please let us know what happens.

Images (Click to enlarge)

Oct 23, 2023 at 11:59 AM