Question about 2005 Saturn VUE

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My torque converter seems to shift in and out at 30 mph.

My torque converter seems to shift in and out at steady speeds, mostly noticable at 30 mph in town. I have an automatic with the 3.5 liter eng. any ideas?

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  • 72 Answers

Most transmissions today have speed sensors. this could be your problem

Posted on Nov 12, 2009

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E4OD Trans stays in OD no matter where the shifter position is.


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I think this is your problem:

Programmable Speedometer/Odometer Module (PSOM): Description: The programmable speedometer/odometer module receives input from the rear brake anti-lock sensor, which is mounted on the rear axle differential housing. The PSOM processes this input signal information and relays it to the powertrain control module and the speed control module. This signal tells the powertrain control module the vehicle speed in miles per hour (mph). Used as an input in determining shift scheduling and electronic pressure control. Symptoms: Harsh engagements, firm shift feel, abnormal shift schedule, unexpected downshifts may occur at closed throttle, abnormal torque converter clutch operation or engages only at wide-open throttle (WOT). May flash transmission control indicator lamp. Diagnostic Trouble Codes: 452, P0500, P1500, P1501, P0503

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