Three problems related to manifold/header/muffler/tail pipe have been reported for the 2015 Chevrolet Silverado 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 Chevrolet Silverado 1500 based on all problems reported for the 2015 Silverado 1500.
My truck had an afm collapsed lifter failure. It occurred under a hard acceleration event to change lanes. The dealer replaced the lifter, returning the vehicle to me. I got down the road, tested it under hard acceleration and it happened again! this time there was a lot of internal engine noise, really loud. I asked the dealer if they ntested it under a hard acceleration; they did not. They replaced the #6 piston and the valves associated with the #6 piston. All work performed was done on #6, even the initial collapsed lifter. I picked it up again and again a hard acceleration produced misfires! I had it towed it back to the dealer and asked them if they had tested it with hard acceleration. The response was @ 3300 rpm. I told the service writer that, if you do not test it under hard acceleration you will not even have it misfire! he redid the test and voila, he can see it now! technical resources told them to replace vlom, or "valve lifter oil manifold". I got it back and it does work, more or less. A hard acceleration will produce uneven acceleration but without the previous issues. I am working for now. . Read more...
The cabin of the vehicle fills with carbon monoxide. This is known because a 4 gas monitor in the vehicle read carbon monoxide levels in excess of 400 ppm. The source of the leak after being taken to the dealership was found to be a broken bolt in the exhaust manifold. The parts only estimate was $1,700 with approximately 9 labor hours. Online research found numerous complaints. Failure to correct the condition may lead to drivers fainting while driving and cause brain injury to a child or infant. A leak in the exhaust before reaching the catalytic converters also results in possibly excessive untreated emissions. The exhaust leak may or may not pose a fire hazard.
Hello just wanted share this about my 2015 Chevrolet silverado my started making a strange knock sound sqealing noise on engine so took it to Chevrolet dealer to have it ckecked out they called me and told that it had exhaust manifold bolts broke off in engine block it will cost $4000 dollars to repair I feel that is a gm manufacture issue even my extended warranty will not cover this problem I feel that shouldn't pay someone needs to investigate why these bolts broke off.