Hi, I'd make sure the battery has a full charge and the battery connections are clean, When the problem occurs, I'd check the voltage circuits at the starter relay, in the power distribution center, under the hood. Voltage to the load side of relay, is hot all the time. Voltage to the coil side of relay, goes hot with the key in the start position. You can use a testlite on it. Any testing at relay, make sure the tranny is in park or neutral and the e-brake is set.
The coil side of starter relay is grounded by the pcm, the theft/security system would also be something to think about.
SPONSORED LINKS
Monday, August 31st, 2020 AT 1:21 PM