OBD II Engine Diagnostics Front-Engine Rear Drive Dual Exhaust DOHC V6 Engine Step on the accelerator and feel the European influence. And Catera can go up to 100,000 miles before its first scheduled tune-up. After all, Catera engineers are keenly aware that performance is not a luxury, it's a necessity.
Maintenance needs vary with different uses and driving conditions.
See the Owner's Manual for details . By opening and closing a trio of valves in various combinations, the oncoming rush of air takes a shorter, or longer, path through the intake tubing, creating shorter or longer pulses of air. This also synchronizes the air's arrival to the opening of the intake valves. The flow of air is smoothed out, and more air is packed into each ignition cycle. More air means more power.