B2105

Originally having issues slowing down going around corners and up a steep incline. Felt like vehicle was staying in higher gear, you could down shift it manually. At that time there were no codes present in the system. Then last year in august 2011 we did a cross county trip (7000 miles) vehicle would stall at both low speed and high speeds, not every day. Sometimes vehicle would restart itself and others the key had to be removed and reinserted, but most times not. The weather did not seem to be a factor. Upon return vehicle had approx 45,000 miles, codes retreived from vehicle were multiple. Active codes: B2105, C121C pending code: P0524 stored codes P0129, P0688, P0884. At 35,000 miles new oem spark plugs and water pump (due to coolant leak) with new antifreeze. Vehicle is serviced regularly every 3,000 miles since new. Since 45,000 miles all related circuits and components have been inspected and checked for proper operation. New crank sensor and electrical ignition switch. Code B2105 keeps recurring even without stall. All wiring connections and grounds have been cleaned and checked, new battery at 36,000. Had vehicle to dealer and they said they may not be able to find problem. We have stopped driving this vehicle even though we are still paying for it because we feel that it is not safe. My husband has 40 years as certified automotive mechanic and is very frustrated with this vehicle.
ENGINE AND ENGINE COOLING, POWER TRAIN