Tappets sound on a 2001 Buick Century tappets were replaced twice until I was informed that all GM 2001 cars had this defect. It seems that oil is not getting to the center cylinders, because the connecting feeds are too small. Problem that can develop is the engine can seize.

- Ronkonkoma, NY, USA

The 2001 Buick Century was not shifting well and ran out of transmission fluid. When the reservoir for transmission fluid was refilled the fluid ran out quickly and I took the car into the local dealer to be repaired. They told me all the fluids were mixing and that if it was not fixed the antifreze and water would have leaked into the oil and blew the motor because the lower intake maniforld gasket was bad. The bill from the dealer accounts for leaking transmission fluid lines and the li manifold gasket. These were expensive repairs and the reason I decided to report them was that my son and daughter-inlaw both have new GM vehicles and have replaced the intake manifold gaskets on one of them 2 times and the other 1 time for a total of 4 intake manifold gaskets for out family. They have a 2001 and a 2002 Alero. Now my daughter is also describing what may be the same problem.

- Medina Township, OH, USA

No summary

- Williamsville, NY, USA