...Impala w/ 3.4L V-6? Wife's '04 Impala won't shift into first (either automatically or manually). Trouble code is 0753, which states that 1-2 solenoid is defective, or circuit is open. It can still be driven, but starts from standstill in 2nd gear. Am wanting to do what I can myself, but I don't want to dig into the transmission proper. Anybody have experience with this? Thanx.