NHTSA Complaint #11571848 — 2016 CHEVROLET EQUINOX

Problem first appeared with the limp mode being initiated by the vehicles computer system. This occurred at 96,000 miles in July of 2021. After running numerous diagnostics with a OBD scanner, and removing VVT solenoids, came to the conclusion it was the problem. After replacing with new OEM Solenoids and restarting the computer from the battery. The problem seemed to be resolved. In March of 2021the vehicle started losing oil by the quart each week. January 2022 the computer link initiated the limp mode again at 100,000 miles. After trying to diagnose using OBD, the conclusion was not apparent. Followed up by taking the air box off and found oil in the vacuum line for the air box. Continue the investigation by removing the PCV valve and the VVT solenoids. Found large amounts of oil(more than Chevy engineers allowed). Then proceeded to reassemble and run compression tests. Found "blow by" to be so bad that the oil was blowing out of the valve cover and past the seal. Disassembled the intake manifold and found puddles of oil in the base of the intake manifold. The MAF system had large amounts of carbon build up. Cleaned intake components meticulously. Reassembled and problem went away only to reemerge with massive oil loss September of 2022. Took to the dealer and they kept vehicle an entire week to report they found no oil loss. We then decided to rebuild engine; seals, pistons, rings, bolts etc.. After removing engine (January 2023 113,000miles) completely and breaking it down to crankshaft, I came to the conclusion the Intake manifolds direct injection system has a major flaw (mainly due to a pinhole becoming clogged found in the middle of the intake valve system). Causing massive pressure issues that can lead to full engine failure. So much carbon build up on pistons with major ignition problems visible by piston damage. In February of 2024 (131,000miles). Problem has started to reoccur with much blow by continuing near valve seal. I have pics