I recently inherited a 01 s60 which was originally a New Mexico car but has spent the past two years in Jackson Mississippi. Its got 214,xxx miles on and I drove it from Jackson Ms, last week no problems and only used about $45 on gas. last night I drove from Chicago to Huntsville and on hills it began to sputter on hills and refusing to downshift on inclines. It stumped me for a minute until I would drop it manually into 4th so it wouldn't happen anymore. I'm wondering is theres a solenoid or something else I should look at before I take it to the dealership.