Which automatic transmission is in a Chevrolet Cobalt — 6T30 / MH9?
The bounded answer here applies to a 2013 Chevrolet Cobalt in the readable JX69 / L2C catalog context: that application carries automatic-transmission RPO MH9, and MH9 is separately mapped to 6T30. This is not a statement about every Cobalt year or market.
Step 1: Cobalt → MH9
E627 records a readable 2013 Chevrolet Cobalt JX69/L2C context where the automatic transmission RPO is MH9. That is vehicle-to-RPO evidence for one bounded application.
Step 2: MH9 → 6T30
E625 is a separate RPO-dictionary record: readable GM EPC titles explicitly use the form (MH9) 6T30. This evidence establishes only code → transmission; it does not tell us which vehicle carries MH9. Keeping the two steps separate prevents a model-name guess from becoming a transmission claim.
How does this relate to Ravon R4?
In E627, a publisher repair manual treats Ravon R4 / Chevrolet Cobalt together and independently supports the 6T30/MH9 platform context. That bridge can be used for platform/transmission identity with publisher attribution, but not for service-part ordering.
The Ravon query therefore remains on its own owner page: Ravon Nexia R3/R4 transmission. The Cobalt catalog does not automatically cover Uzbek R4 build batches. We do not claim all R4 use 6T30/MH9, and Cobalt service part numbers cannot be transferred to R4 by platform identity alone.
How to verify your own vehicle
For a different Cobalt year, engine, or market, use the VIN/RPO identification method. For an RFQ, send VIN, RPO/label photo, engine, and vehicle market.
FAQ
- Does this article say every Chevrolet Cobalt uses 6T30?
- No. The answer is bounded to the 2013 JX69/L2C context in E627.
- Why is MH9 identified as 6T30?
- E625 directly establishes the MH9 → 6T30 mapping.
- Can a Cobalt catalog be used to order parts for Ravon R4?
- No. Platform identity may bridge the names; service-part ordering does not.
- What is needed for another Cobalt year?
- VIN/RPO and the market-specific catalog.