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Transmission

Tiny
ALEESAROSE68
  • MEMBER
  • 2008 CHEVROLET IMPALA
  • 3.5L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 221,000 MILES
My car will go into reverse but not drive forward unless the transmission is unplugged. I have already replaced all solenoids and filter has been replaced along with putting new fluid into it. So I am clueless on what the problem could be?
Tuesday, April 17th, 2018 AT 4:20 PM

9 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good evening.

Are there any codes stored in the transmission?
Roy
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Tuesday, April 17th, 2018 AT 5:21 PM
Tiny
ALEESAROSE68
  • MEMBER
  • 3 POSTS
Yes, (p1825), (p2534), (p2764), (p0717), (p0700), (p0523).
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Wednesday, April 18th, 2018 AT 4:37 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay.

Code P1825 item description.
Symptom/DTC P1825.
Descriptor.
Probable Causes:
Internal Mode Switch (IMS).
Traction Control Module (TCM) Switch.
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Wednesday, April 18th, 2018 AT 4:42 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Code P0717.
Item Description
Symptom/DTC P0717
Descriptor
Probable Causes:
Input Shaft Machined Face for Damage or Misalignment.
Input Speed Sensor (ISS).
Input Speed Sensor (ISS) for Damage.
Input Speed Sensor (ISS) for Metallic Debris.
Input Speed Sensor (ISS) for Misalignment.
Transmission Control Module (TCM).
Transmission Control Module (TCM) Connector Pins Misalignment.
Transmission Control Module (TCM) Damaged.
Transmission Control Module (TCM) Metallic Debris.
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Wednesday, April 18th, 2018 AT 4:43 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
523

Code P0523
Item Description
Symptom/DTC P0523
Descriptor
Probable Causes:
Engine Control Module (ECM).
Engine Oil Pressure.
Engine Oil Pressure Sensor (EOP).

2534

Code P2534
Item Description
Symptom/DTC P2534
Descriptor
Probable Causes:
TRANS Fuse Open.
Transmission Control Module (TCM).

2764

Code P2764
Item Description
Symptom/DTC P2764
Descriptor
Probable Causes:
Torque Converter Clutch (TCC) Pulse Width Modulated (PWM) Solenoid Valve.
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Wednesday, April 18th, 2018 AT 4:46 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay, did all this happen at once?

They all have in common the transmission control module.

It could be either wiring harness or the module itself. These all need to be checked to determine the exact failure.

Roy
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Wednesday, April 18th, 2018 AT 4:49 AM
Tiny
ALEESAROSE68
  • MEMBER
  • 3 POSTS
Well all I know is I got the car from a friend like this and he had got it like that and never even drove it, but I thought it would be a easy fix. So I guess to answer your question I do not really know if all happened at once. And I already replaced the control module and the solenoids so I am just kind of stuck here on this one.
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Wednesday, April 18th, 2018 AT 7:19 AM
Tiny
ALEESAROSE68
  • MEMBER
  • 3 POSTS
And so you think wring harness?
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Wednesday, April 18th, 2018 AT 7:20 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Did you have the module flashed?

Yes, that would be the next step.

Roy
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Wednesday, April 18th, 2018 AT 7:22 AM

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