JBR

Born/raised in small town USA. Everything manufactured within the past 20-30 years can be traced to corporate inertia. Always too little/too late.

A few things. 1. GM repair requires the entire bank of lifters to be replaced (which is what they did to mine). 2. From my research, a catch can helps with things apparently on the direct injection design. My lifters are now going out a second time, and they were just replaced 10K miles ago. It’s unfortunate that the application for EPA requirements are these ridiculous designs. I’m selling my ‘15 next month and already bought it’s replacement, a 1998 Chevy 2500. The funny thing is, the 1998 gets better MPG than the new EPA requirements of the my 2015.

Hey David. You are ABSOLUTELY correct. My 2015 had to have the entire bank of lifters replaced, and never thru a code. I had to repeatedly insist that something was wrong. Another thing I’d mention is this, my transmission had to be replaced too, and it also thru NO codes. It shifted fine, but would do what yours is doing as well (constantly shift). After the lifters were replaced, AND after insisting there was still a major problem, they finally looked at the transmission and realized it was needing replaced. I recently resolved my problem with my 2015. I sold the piece of junk, and bought a 1998 Chevy with less technology and more reliability.

Newdude is right. I just had my POS 2015 Silverado fixed. I first had the P0301 code, and replaced the plug, wire, AND the coil pack. Then it threw the P0300 general misfire code. It also reflected the safe mode with blinking check engine light. I took it to the dealership, and LUCKILY mine was still under warranty (5yr/100K). When I referenced what Newdude said, they agreed and replaced the ENTIRE bank of lifters, and the camshaft. For those of you who may want/need it, I’ve included a pic of the maintenance order. All of the work was done by the dealer. I still HATE this truck with a passion and will be selling it within the coming months. Worst truck I’ve ever owned by far.