Transmission · Automatic 4-speed · 6.0L
400-RL01252A Transmission interchange
400-RL01252A is a Redline transmission interchange code that fits 2 vehicles from 2005–2006, option Automatic 4-speed · 6.0L.
INFERRED
Inferred: matched by vehicle specs. Likely right; confirm before you sell.
Fits
| Year | Make | Model | Option |
|---|---|---|---|
| 2005 | GMC | Sierra 1500HD | Automatic 4-speed · 6.0L |
| 2006 | GMC | Sierra 1500HD | Automatic 4-speed · 6.0L |
OEM numbers
How to verify
- Check the ID tag or transmission code against the OEM numbers above.
- Decode the VIN to confirm year, model and powertrain.
- Compare the part physically: mounts, connectors and dimensions.
Information is a guide only. Verify fitment before sale. No warranty is given.
Last updated 2026-10-03