No start, no crank GM trucks
GM has issued a service bulletin #PIT5391E to address a no start, no crank on the GM trucks listed below. The problem can be a no crank, start followed by immediate stall, check engine light, Service 4WD message, relay clicking noise, rearview camera inoperative and may be accompanied by any of these trouble codes: C0364 and/or U0403, B1370, B1325, P0650, P263A, P263B, P0513, P129D, P2535, and/or P0262B
Fix no start, no crank
GM has determined that the cause of these issues is often the loss of IGN 1 voltage caused by a failure of one or KR73 Ignition Main Relays or terminal issues in the fuse box connector. One of the KR73 relays is in the Underhood Fuse Block and the other is in the Left dash panel fuse box.
Start by checking for power on fuse 34 in the underhood fuse box with the key in the ON position. If that fuse shows power, then check for power on fuse 32 in the dash panel fuse box. If you don’t see power on fuse 32, check for power on fuse 33. Then check the condition of J308 in the left door sill.
Inspect the fuse box connectors to check for backed out terminals or poor terminal fit. The most common terminals with these issues have been: Terminal M5 at connector X4, for circuit 5199 Terminal M7, A2 or A3 at connector X2 for circuit 439 (Depending on model and year, circuit 439 can vary in terminal location.
Inspect for any backed out terminals, poor terminal fit and/or bent/twisted terminals at the Left dash panel fuse box X51L.
Vehicles covered by GM service bulletin#PIT5391E
Cadillac Escalade Models 2015-2019
Chevrolet Silverado 1500 2014
Chevrolet Silverado 2015-2018
Chevrolet Silverado LD 2019
Chevrolet Silverado 2500/3500 2019
Chevrolet Suburban 2015-2019
Chevrolet Tahoe 2015-2019
GMC Sierra 1500 2014
GMC Sierra 2015-2018
GMC Sierra Limited 2019
GMC Sierra 2500/3500 2019
GMC Yukon Models 2015-2019
©, 2020 Rick Muscoplat
Posted on by Rick Muscoplat