Have a 17 Malibu with the 1.5 Turbo in the shop, symptoms are hard brakes, engine light on with many codes, vehicle stalled at same time brakes got hard. Checked fluids, coolant in full cold range, oil just on the tip of the stick. Added a qt, now 1/2 qt under full. Start engine, yeah brake pedal hard and vehicle difficult to stop. Get it in the shop and start poking around, no external vacuum leaks I can see or hear. Connect fluid extractor to the brake booster, booster is good, cross reference engine codes against tech bulletins, find that these are know to shatter the vacuum pump drive resulting in damage to the camshaft including a no start or long crank no start condition due to the exhaust camshaft position reluctor getting damaged by chunks o pump. I guess this is a newer problem, car was indeed a no start when I came back to pull it out, I had to unplug the exhaust cam position sensor to fail it over to get the engine to start.
Anyone here with a GM turbo 4 cylinder, change your oil early and often I guess. The engine oil lubes the vacuum pump I hear, I've seen some Ford vacuum pump failures but they just wiped out the wipers in the pump, they didn't shatter the drive of the pump and possibly eat the end of the camshaft and poop debris all into the cylinder head. Good news is this customer has an extended warranty from CarMax, bad news is they're probably going to bounce her for missed oil changes. OCI on the DIC says 0% oil life and there's no sticker on the glass.
Anyone here with a GM turbo 4 cylinder, change your oil early and often I guess. The engine oil lubes the vacuum pump I hear, I've seen some Ford vacuum pump failures but they just wiped out the wipers in the pump, they didn't shatter the drive of the pump and possibly eat the end of the camshaft and poop debris all into the cylinder head. Good news is this customer has an extended warranty from CarMax, bad news is they're probably going to bounce her for missed oil changes. OCI on the DIC says 0% oil life and there's no sticker on the glass.