24230715 fitment data: why “6T45E” without LH/RH is not enough
Short answer: a listing for OE 24230715 that says only “6T45E” is still incomplete for fitment. In our audited comparison record, the transmission field was present, but the title did not identify left-hand (LH) or right-hand (RH), and the year fields were blank.
Why is this worth an article?
Because a part number can look precise while the actual fitment record is still missing a field that matters.
We compared 10 exact OE numbers from our GM 6T reference set against a separate Made-in-China catalogue dataset.
Only one of those ten exact OE numbers appeared in that comparison dataset:
The record did contain a transmission designation:
6T45E
But two important fields were missing:
- the title did not state left-hand (LH) or right-hand (RH);
- the year-from and year-to fields were blank.
That is a useful example of the difference between finding a part number and having enough information to verify the part before ordering.
What did the comparison actually show?
The audit was intentionally narrow.
| Field | 24230715 comparison record |
|---|---|
| Exact OE number | 24230715 |
| Transmission field | 6T45E |
| LH/RH in listing title | Not stated |
| Year from | Blank |
| Year to | Blank |
Among the 10 exact GM 6T OE numbers in our reference set, the other nine did not have the same exact OE match in that Made-in-China comparison dataset.
This does not prove that those nine part numbers are absent from every international marketplace.
It only describes the dataset we audited.
The important point is narrower:
Even the one exact OE match we found did not contain all the fields needed for a complete side-specific fitment record.
Why does LH/RH matter for 24230715?
Because 24230715 is not just a generic “transmission seal” reference.
Multiple transmission-industry catalogues identify 24230715 as the left-hand (LH) axle/output seal.
Our research found consistent LH/left identification in several specialist transmission-parts catalogues.
However, there is an important evidence boundary:
We did not locate a public GM document that directly states “24230715 = LH.”
So the correct wording is:
24230715 — identified as LH/left by multiple transmission-industry catalogues; direct public GM side assignment not located.
It should not be rewritten as:
“GM confirms 24230715 is LH.”
That distinction matters to us because the purpose of a fitment record is not to make a claim sound stronger. It is to show exactly how far the evidence goes.
For the dedicated left/right evidence and the paired OE number, see 24230682 vs 24230715 left/right evidence.
Why isn’t “6T45E” enough?
A transmission family or transmission designation answers only one part of the question.
It tells you what transmission the listing associates with the part.
It does not, by itself, answer:
Which side?
For a side-specific axle/output seal, the minimum useful record is therefore more detailed than:
24230715 → 6T45E
A safer record needs fields such as:
OE number → transmission → sealing position → LH/RH → applicable year/design boundary where verified
If one of those fields is unknown, it should remain unknown until it is checked.
A transmission code should not be used to silently fill a side field.
What do LH and RH mean on a vehicle?
LH and RH refer to the vehicle's own left and right sides relative to the vehicle facing forward.
They are not defined from the perspective of someone standing in front of the vehicle looking into the engine bay.
This convention is supported by vehicle-coordinate standards and OEM manuals.
In practical terms:
LH = vehicle left when facing forward
RH = vehicle right when facing forward
That is also why “driver side” is a weaker global description.
On a left-hand-drive vehicle, the driver is normally on the vehicle LH side.
On a right-hand-drive vehicle, the driver moves to the vehicle RH side.
The vehicle's LH and RH do not change.
For a catalogue intended to serve more than one market, LH/RH is therefore safer than driver/passenger wording.
Why can a missing side field survive in a catalogue?
Because part-number records are often assembled from several different kinds of information.
One source may provide:
- OE number;
- another may provide a transmission family;
- another may provide vehicle names;
- another may provide a year range.
If those fields are merged without checking whether they describe the exact same application, the final listing can look complete while still having an unresolved position.
Our own supplier-catalogue audit illustrates this problem very clearly.
For 24230715, different listing rows in the source catalogue contained mutually exclusive side wording:
one row described 24230715 as left, while another described the same OE number as right.
That audit recorded the contradiction. It did not decide the correct side from those supplier titles alone.
The side assignment required a separate evidence check.
That is the important workflow:
Conflict first → independent verification second → catalogue field only after verification.
Why not simply trust the most common listing?
Because repetition is not independent verification.
If one incorrect title is copied between sellers, ten matching titles may still represent one original error copied ten times.
A useful verification process therefore asks:
- Is the source independent?
- Is it a specialist transmission catalogue?
- Does it identify the exact OE number?
- Does it explicitly state the side?
- Is an OEM or service source available?
- Are there conflicting records?
The number of matching web pages is less important than the quality and independence of the evidence.
How should 24230715 be checked before ordering?
1. Confirm the exact OE number
Use:
24230715
Do not substitute a visually similar number.
2. Confirm the transmission application
Do not rely only on a vehicle model name.
The transmission code should be independently established for the vehicle.
3. Confirm the side explicitly
For this part, the purchasing record should contain:
left-hand (LH)
if that is the side supported by the catalogue evidence being used.
Do not leave the side implicit just because an OE number is present.
4. Keep source level visible
If the side identification comes from specialist transmission catalogues rather than a public GM side-assignment document, record that distinction.
5. Verify model year and configuration separately
A blank year field should remain blank until supported by a source.
Do not copy a year range from another seller simply to make the listing look complete.
6. Use VIN/application data when needed
Especially around model-year, transmission-generation or application boundaries, confirm the installed transmission before ordering.
What is the real catalogue risk?
The risk is not “a listing forgot two letters.”
The risk is that a missing position field becomes invisible once the record is copied downstream.
A record can travel through:
supplier catalogue → importer spreadsheet → distributor database → workshop order
At each step, the OE number can make the record look authoritative.
But an OE number does not automatically fill missing fitment fields.
For side-specific parts, position is part of fitment data.
That is why we treat:
OE number
transmission code
year/design boundary
function/position
as separate fields rather than one product-title sentence.
What we do not claim here
This audit has strict limits.
We do not claim that Made-in-China contains only one GM 6T part globally.
We only found one exact OE match among the 10 specific GM 6T OE numbers in our audited comparison dataset.
We do not claim that the 24230715 listing is technically incorrect.
The problem identified here is that its title did not state LH/RH and its year fields were blank.
We do not claim that Made-in-China or the seller had no additional fitment information elsewhere.
This audit concerns the fields present in the compared catalogue record.
We do not claim that GM publicly confirms 24230715 as LH.
Multiple specialist transmission-industry catalogues support the LH/left assignment, but a direct public GM side-assignment document for this exact old OE number was not located in our research.
We do not infer missing years, vehicle applications or supersession data.
Where the evidence stops, the catalogue field stays open.
Frequently asked
- Does an OE number plus a transmission code make a complete fitment record?
- Not for a side-specific part. Position is a separate field. For the LH/RH assignment of this OE number and its paired opposite side, see our dedicated left/right comparison.
- Does “6T45E” prove which side the seal fits?
- No. A transmission designation and a side designation are separate fitment fields.
- Why is LH/RH better than driver side/passenger side?
- LH/RH follows the vehicle's fixed left/right orientation. Driver/passenger wording changes meaning between left-hand-drive and right-hand-drive vehicles.
- Was the Made-in-China listing wrong?
- Our audit does not establish that. It establishes that the compared record lacked LH/RH in the title and had blank year fields.
- Were all other nine GM 6T OE numbers absent from Made-in-China?
- They had no exact OE match in the specific comparison dataset used in this audit. That should not be generalized to the entire platform or the whole internet.
- What is the minimum information needed before ordering a side-specific transmission seal?
At minimum, verify the exact part number, installed transmission and sealing position/side. Year, generation, RPO and VIN should be checked when the application requires them.