The other solenoids in the valve body had an impedance in the range of 4.7 to 5.2 Ohms. My 1999 Saturn SL1 had reverse and forward gears but was slamming into gears 2, 3 when the car warmed up. The diagnostic trouble codes were PO732, Incorrect 2nd gear ratio; PO733, Incorrect 3rd gear ratio; PO783, 3-4 Shift Malfunction. This was all corrected by replacing the gear 4 solenoid, which is located at the end of the L pattern of solenoids toward the driver on the right side when viewed while standing in front of the car.