P1791

SCHILS1

MEMBER
2003 SATURN VUE

Transmission problem 6 cyl All Wheel Drive Automatic

Transmission Control Module Loop code? Is this a relay problem or a sensor problem and how do I repair it?

Thursday, July 2nd, 2009 AT 4:24 PM

3 Replies

BRIAN 1

MECHANIC
1,030 POSTS

The instrument panel/body inline connector,located behind the left hinge pillar garnish molding, may have bent or corroded terminals.

check this first,and post back with what you find.

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Thursday, July 2nd, 2009 AT 5:57 PM

ANDREW03

MEMBER
2 POSTS

Where is this?

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Friday, November 10th, 2017 AT 9:51 AM

KEN L

MASTER CERTIFIED MECHANIC
47,240 POSTS

This code is for the transmission input and output speed sensors. Here is a video that show the speed sensors being done.

https://youtu.be/f3bETtCIdxM

Different car but you get the idea.

You can run the codes by follow this guide.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Here is how you do it on your car. (below)

Please let us know what happens.

Cheers, Ken

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