GM P0746/P0747: inspect the clutch, not an assumed valve-body fault. See the manufacturer document, vehicle conditions, exclusions and questions for a qualified shop before assuming a repair.
This is a research summary of a manufacturer communication, not a diagnosis for your car, a DIY repair procedure or confirmation of warranty or recall eligibility. No qualified technician has approved a repair for your individual vehicle here.
This historical communication is conditional. The current revision, VIN/build eligibility, measured diagnosis and any warranty or recall decision are not established here. Ask the manufacturer or a qualified shop to check the complete current document.
Read the General Motors original: 8T65/9T-series no/slipping drive, P0746/P0747 and clutch retaining ring · Check open recalls by VIN at NHTSA Source date: 2024-07-11; research checked: 2026-11-01.
What prompted this manufacturer document
- An out-of-round clutch retaining ring can accompany no/slipping drive and these DTCs.
- The document explicitly excludes replacing the valve body or solenoid body for this particular condition.
Which vehicle conditions must be checked
Each row below retains its own conditions. Do not combine engines, years or models across rows to create new applications. A listed model is not proof that a particular VIN is affected.
- Buick Encore GX · 2024, 2025 · M3F
- Buick Enclave · 2024 · M3W
- Cadillac XT4 · 2024 · M3H
- Cadillac XT5 / XT6 · 2024 · M3G / M3W; confirm individual RPO
- Chevrolet Blazer · 2024 · M3T / M3V
- Chevrolet Trailblazer · 2024, 2025 · M3F
- Chevrolet Traverse Limited · 2023, 2024 · M3V
- Chevrolet Traverse · 2024 · MF8
- GMC Acadia · 2024 · MF8
- GMC Terrain · 2024 · M3U
- Transmission build 2023-10-01 through 2024-04-22; Julian 23 274 through 24 113. This is not the vehicle assembly date.
- The prescribed symptom/code-return conditions and transmission identification must be verified.
Codes recorded in this document
A root listed only as an appearance has no separately verified meaning here. Preserve every suffix and module name; a shared root does not transfer a repair branch to another vehicle.
| Root | Raw form | Meaning in this source, if established |
|---|---|---|
| P0746 | P0746 | Appears in the document; individual meaning not verified |
| P0747 | P0747 | Appears in the document; individual meaning not verified |
What an owner can record safely
- Save the symptoms and ask the shop to record the transmission build identifier.
Bulletin eligibility questions
The source uses these gates before choosing a professional diagnostic branch. A missing answer means applicability is unknown; passing one gate never authorizes a repair.
- GM transmission build window
What the source does not prove
- Do not repeatedly drive a slipping vehicle or order a solenoid body from the code description.
- A code or message alone does not establish a failed part, a safe-to-drive decision or an approved repair for this VIN.
- A service bulletin is not automatically a recall or free warranty repair. Confirm current eligibility directly.
Questions for the repair shop
- Does the transmission date fall inside the window, and is the retaining-ring condition confirmed?
- Does a later revision or a current recall change the source's original advice?
- What measurement or inspection confirms the cause, and how will the repair be verified?
Open source-review issue
- Q2-012: A matching code and model name alone do not satisfy the manufacturer's diagnostic gates; symptom, build and test conditions still need checking.
The uncertain field is not used here to claim a current fitment, repair or market-wide failure.
Read the original record
The linked communication may be revised after the research date. Compare its document number, exact vehicle table, diagnostic preconditions and exclusions with a qualified technician. This page paraphrases selected facts and does not reproduce the manufacturer procedure.
Sources and scope
- General Motors — 8T65/9T-series no/slipping drive, P0746/P0747 and clutch retaining ring (PIP5974C) Document: 2024-07-11 · Research checked: 2026-11-01
Research snapshot: 2026-11-01. Source documents may have newer revisions. Verify current instructions and VIN eligibility with the manufacturer.