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Lou P.
Lou P., ASE Certified Technician
Category: Cadillac
Satisfied Customers: 4578
Experience:  I Have knowledge in almost all car lines and can help with general questions and more!!!!!
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I'm having an issue w/my 07 CtS. After I start my car, doors

Customer Question

I'm having an issue w/my 07 CtS.
After I start my car, doors don't always lock when this happens it seems to shift very hard after I put in gear,( like the car jolts or jumps into gear) then after parked I cannot get my key out of the ignition. Key stats in the on position. At first I could move the car w/ a jerk back or front and put back in the park position and the key would release.
But it seems to be getting worst and isn't working. I can tell by shifting if it's malfunctioning, just by feel.
I've been disconnecting my battery whenever I park now..
Submitted: 1 year ago.
Category: Cadillac
Expert:  Lou P. replied 1 year ago.

hello, from everything you describe it tells me that the transmission cable or the position switch is the issue, here is a diagram to the switch on the transmission.

Expert:  Lou P. replied 1 year ago.

a scanner will need to be used to verify that the module is getting the correct signal from the position sensor , that would explain the rough shifting and no door lock activation since the car does not know the actual position of the transmission. hope this helps.

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Customer: replied 1 year ago.
I could not read the diagram that was went and have already been charged
What is the exact technical name of the sensor for when I call cadillac
Expert:  Lou P. replied 1 year ago.

ok my apologies i can try to upload again? its called the TRANSMISSION RANGE SENSOR or TRANSMISSION POSITION SENSOR, either is the name.

Expert:  Lou P. replied 1 year ago.

ill see if this one opens up

Expert:  Lou P. replied 1 year ago.

and again

Expert:  Lou P. replied 1 year ago.

its number 602 on the picture

Customer: replied 1 year ago.
Thank you.. How big of a job is it? Ball park price through regular mechanic, not cadi
Expert:  Lou P. replied 1 year ago.

Maybe a hours worth of time ? It's right on the side of the transmission on the outside of it. So should be under 200$ labor. The part may be just as expensive