Transmission to ECM diagram?

Tiny
POWERHOUSE199216
  • MEMBER
  • 2006 CHEVROLET EXPRESS
  • V8
  • 2WD
  • AUTOMATIC
  • 123,000 MILES
Need to test the 23-shift solenoid, wire and solenoid. I would like to test it through the harness before I open the transmission, please and thank you Need transmission to e c u wiring diagram, please. Codes P2761 and p0758 Somebody else has replaced both solenoids.
Wednesday, August 28th, 2024 AT 11:48 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 52,648 POSTS
Yep, good call. Here is a guide to help you with the testing and I have included the wiring diagrams as requested.

P2761 - Torque Converter Clutch (TCC) Pressure Control Solenoid Control Circuit Low:
P0758 - Shift Solenoid 'B' Electrical:

Since chances are the shift solenoid is bad, I included how to change it out as well. Check out the images (below). Please upload pictures or videos in your response of any problems so we can see what to help you with.
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Thursday, August 29th, 2024 AT 11:20 AM

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