Gear goes into drive but car will not move

2006 CHEVROLET MALIBU
180,000 MILES • 3.9L • V6
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KRYSTAL C
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I have the car listed above maxx SS. My car goes into all gears but won’t move in drive. It will go into manual and then we are able to use the speed shifter to drive. Transmission fluid is good, doesn’t smell burnt, we replaced the output speed sensor, the gear shifter linkage looks intact, we replaced alternator. But it still won’t drive when it’s in the drive gear? What else could be the problem?
Dec 17, 2019 at 9:13 PM
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STRAILER
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Hello,

This can be a input shaft speeds sensor issue. to be sure lets run the codes to find out what's going on. here is a guide and the input shaft speed sensor location as well:

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

Check out the diagrams (below). Please let us know what happens.
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Dec 19, 2019 at 1:02 PM
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KRYSTAL C
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We had AutoZone check for codes and nothing comes up. Also our cars engine light is not on either. Would a code show for a speed sensor?It turns on and drives but not in drive. We put in manual And can use the speed shifter. It’s really weird. Do you think it could maybe be a bad motor mount?
Dec 19, 2019 at 9:20 PM
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STRAILER
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It doesn't sound like an engine mount can cause this can I ask if the shifter lights are working?
Dec 21, 2019 at 11:00 AM