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1994 4L80E Rebuild Parts List: Every Part That Fits

Every part below is confirmed to fit a 1994 4L80E. Order the parts you need in one cart.

Build your 1994 4L80E kit

Rebuild and Overhaul Kits

Rebuild / overhaul kit: 4L80E Master Rebuild Kit with Frictions and Steels (Regular, $254.99)

Valve Body

Valve body: 4L80E Valve Body 1993-1996 - Remanufactured (Regular, $339.99)

Solenoids

Shift solenoids A and B: 4L80E/4L85E Shift Solenoid Kit A & B - 24230289 24230288 (Regular, $39.99)
Solenoid kit: 4L80E Transmission Solenoid Kit, EPC, Shift A/B and TCC (Regular, $113.99) or 4L80E 4-Piece Solenoid Kit EPC TCC Shift, 1991-2003 (Alternate, $120.99)

Bands

Band: 4L80E Rear Reverse Band, BorgWarner High Energy 38014BW (Upgrade, $79.99)

Sprags and Roller Clutches

Sprag / one-way clutch: 4L80E Intermediate Sprag Clutch, 34-Element Heavy Duty (Upgrade, $76.99)

Shift Kits

Shift kit: TransGo SK 4L80E Shift Kit, Reprogramming Kit for GM 4L80E/4L85E (1991-Up) (Upgrade, $116.99)

What changed for 1994

Valve body (1992-1996): Early-generation VB with temp sensor in internal wire harness (Sonnax reman GM027 '92-'96).
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 (1991-1996): Pump body casting 8678778 (narrow bushing); pump cover for front-cooler-return case.
Drums and shells (1991-1996): Original gear train: non-center-lube center support, first-design sun gear shaft (long bushing journal), 1991-98 type carriers with .710 in pinions; 16-element intermediate sprag (forum).
Band (1991-1995): Rear Low/Reverse servo early design (Sonnax HD piston 34914-01 and adjustable pin kit 34912-01K fit TH400 and '95-earlier 4L80-E).
Pan and filter (1991-1996): Shallow-style filter: ACDelco 8684221 / WIX 58917 / Baldwin 18007 (1991-96 trucks and vans).
Case (1991-1996): Case type 1: both cooler lines at front of case side by side; cooler hole drilled through to pump cooler return passage. 1991-1993 4WD has OSS in case reading exciter ring on output carrier; 1994+ 4WD has OSS moved to transfer...
Switches and sensors (1991-1994): No external neutral safety / range switch on selector shaft; short manual shaft (Sonnax 38511-01K).

Build the 1994 4L80E kit 1993 4L80E parts list 1995 4L80E parts list Every 4L80E year

FAQ

What parts are year-specific on a 1994 4L80E?

On a 1994 4L80E these parts are year-specific: valve body, internal harness, pump, drums and shells, band, pan and filter, case, switches and sensors. Every part listed above is confirmed for 1994, so you can order from this list with confidence.

Can I order only some of the 1994 4L80E parts?

Yes. The 1994 4L80E kit builder lets you tick only the parts you need, and they go into one cart.