NHTSA Complaint #11544764 — 2013 CHEVROLET SILVERADO 1500

Throughout this truck's lifespan, it's had multiple problems with the engine and fuel system. Around 70k miles, the engine had to be completely rebuilt because of the issues with oil consumption; well known GM 5.3 liter V8 issue. The oil consumption issue then started back up around 140k miles. Once the vehicle hit 100k miles, it started throwing codes for running to lean and too rich, plus it showed the alcohol (ethanol) content at 40%. I've never used E85/20/15/10, but did use 3.5% blended fuel for the first 100K miles. Since then I've switched to 91 premium which does not contain ethanol. However, me readings continue to be over 40% ethanol. All physical parts of the system, that could lead to this issue have been replaced. Recently, my mechanic happened upon Bulletin PIP4792D, which speaks directly to the issue I among countless others are having. In contacting my local dealership and GM, both declined to help unless I paid to have them correct the software issue that is causing this problem. It seems strange to me that a company would expect a consumer to pay for an update to software, when the company is the one who is the cause for the software being bad.