When moving the gear selector into drive position, the dash illuminates intermediate gear?

Tiny
NTSTEMMLER
  • MEMBER
  • 2007 CHEVROLET EQUINOX
  • 3.4L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 170,000 MILES
When moving the gear selector into drive position, the dash illuminates (Intermediate gear) and the car drives in that gear. It shifts hard, I believe because I’m driving in normal conditions (not towing a load or straining the engine on hill climbs, etc.) And is definitely putting strain on the engine as it over-revs and is locked out of OD. I’m planning to do repairs myself as I’m an experienced (at-home) mechanic, but I’m not sure where to start.
Wednesday, August 17th, 2022 AT 5:15 PM

6 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,186 POSTS
It sounds like the gear range sensor is not working correctly, but we should run the codes to see what comes up. This guide can help, and I have included how to change the sensor out in the images below.

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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Thursday, August 18th, 2022 AT 10:41 AM
Tiny
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Correction: it is Intermediate gear, not intermittent, my bad. I have scanned it and had a garage scan it for me as well. The only code pulled was P0405 which is low voltage in exhaust gas recirculation (EGR) and I doubt that has any effect on the transmission not shifting to drive.
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Thursday, August 18th, 2022 AT 2:17 PM
Tiny
KEN L
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I am not sure what you are talking about, "Intermediate gear?" can you upload an images please?
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Friday, August 19th, 2022 AT 11:07 AM
Tiny
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I’ll get a picture/short video when I go to do some body work on the car later. For now I have this from the manual.
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Sunday, August 21st, 2022 AT 6:27 AM
Tiny
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Also, I do not have a gear range sensor like the one pictured in the diagrams you posted. Where that would be, I have this. Which I believe to be the TCM.
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Sunday, August 21st, 2022 AT 6:31 AM
Tiny
KEN L
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Nice, thanks for the info, yes that is the TCM here is how you replace it in the images below. Let me know what happens please.
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Monday, August 22nd, 2022 AT 7:04 PM

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