2000 4L80E Rebuild Parts List: Every Part That Fits

Every part below is confirmed to fit a 2000 4L80E. Order the parts you need in one cart.

Build your 2000 4L80E kit

What changed for 2000

• Valve body (1997-2003): Second-generation VB for center-lube case: lube hole relocated, no two small holes on upper right.
• Internal harness (1994-2003): Rostra 350-0032 / GM 24222798 internal harness (temp sensor in harness); fits 1994-2003 natively and 1991-1993 only if the external connector is updated.
• Pump (1997-2003): Pump body redesigned (bridge in cooler passage, casting 24205779, wider bushing; retro-fits back to 1991, so the body is effectively '91-up).
• Drums and shells (1999-2000): Front and rear planetary pinions thickened .710 -> .785 in; .041 in shim under rear sun gear bearing; third-design sun gear shaft; 1999-up center support about .050 in different height; case saver retainer / front band anchor...
• Clutches (1999-2009): Intermediate backing plate becomes flat .275 in thick ('99-later); friction counts unchanged per Raybestos '96-on pack. 4L85E friction counts not separately confirmed.
• Band (1999-2009): Wider 1.250 in front band with longer front servo apply pin; band and pin must match case year.
• Case (1997-2003): Case type 2: return cooler line moved toward center of case into a center-support seal (center lube); front boss left unmachined and hole blocked.
• Switches and sensors (1995-2009): External NSS / MLPS on selector shaft; long manual shaft (Sonnax 38511-04K '95-later).

FAQ

Sources

• Transtar / Transend installation instructions
• Rostra product documentation
• Sonnax technical resources
• Sonnax technical resources
• Transmission Digest
• Transmission Digest