When doors were locked using the factory keyfob while one of the doors was still opened, the factory remote start, as well as the key fob, wouldn't work. The dealer ran diagnostics, but found no errors. The problem self-resolved two days before taking i
After 3 days of -30* celcius overnight temps, check engine light came on and gas gauge quit accurately reading. Onstar indicated the problem was with the fuel tank sensor. The gas gauge would sometimes not function at all, other times normally, and ...
Follow-up on previous fuel-gauge problem during cold weather. Was informed there is now a TSB. Using a higher ethanol fuel is supposed to prevent the problem from occurring - may be a Canadian specific problem.
Check engine light came on. Timing chain needed to be replaced. Engine had to be dropped to replace it so a/c was recharged and oil replaced as part of the work. Replaced under special GM extended coverage. Water pump started leaking while vehicle in shop for timing chain replacement. Replaced under warranty - dealership wasn't clear what warranty was used.
Gas gauge drops from 3/8 +/- tank to empty tank reading overnight. Tank level will move higher only after about 20 minutes of driving.
At +/- 40 mph when gas pedal is depressed heavily (lead foot) the car on 4 occasions has not accelerated for several long seconds, neither accelerates or bogs down - just stays at speed then after several long seconds finally kicks in - I consider this ..
DTC codes PO171 & P0174 ended up being oil contaminated Mass Air Flow sensor