2008 Chevrolet Avalanche Engine Problems

“I drive my truck on the weekends only and at least twice a year I have to replace cylinder #7 spark plug all of the time, also got the oil pressure switch and the filter replaced twice and I get a tapping sound at idle due to the low oil pressure reading on the dash, and it has happen right after an oil change, last but not lease the cracking of the dashboard.”

“I have a 2008 chevy Avalanche ltz with the 5.3l v8 engine with adaptive fuel managment. It was purchased used with 120k miles. It became apparent that the engine was consuming oil, 1-2 quarts per 3000 miles. Recently the engine started producing white/blue smoke on start up and oil consumption increased to 2-3 quarts in 1500 miles. My vehicle is currently at a mechanics shop and I am told that for starters I will need new valve covers that are redesigned from the original ones and that excessive oil consumption is common on this engine. …”

“My wife drove the truck to walmart to get a couple of items with her were my son in law and daughter. Once arriving there(approx. 3 mi) they noticed some smoke coming from under the hood. My son in law opened the hood to discover a fire, he then ran into walmart where an employee grabbed a fire extinguisher and put out the fire. After they got home I checked it out and the wiring harness that goes to the mass air flow sensor was completely melted. It was still in all th he factory tie downs and wasn't touching anything that could have chafed it or pinched the wires. …”

“Drove to post office, it was normal till I made a u turn on city street then engine ran very rough and engine light came on blinking, plus service stabilitrak & service traction control also appear on dash. Drove home immediately as truck wont shift to high gear. Check code and it said p0307 cyclinder #7 misfired look up google to see if I can repaired it myself as read to replace plug, wire and coil for cyclinder #7 so I did it still same problem. Took to mechanic to test my truck and fail compression test. Mechanic talk to me as I bought the truck last year and still paying for it. …”

“Excessive oil consumption. Initial problem occurred on february 11, 2014 and GM dealer did some initial work, but the problem was not fixed. On april 27, the engine began running very, very rough and several lights came on (engine light, traction light, stabilitrac light and there may have been others). I immediately pulled over, checked the oil level found it was 1.5 quarts low, so I added oil and started engine again. So I had vehicle towed to my GM dealer. The next week, the dealer said they were looking into the problem. …”