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Sonnax rebuilt valve body GM026 is no longer in production. Please check with your distributor for availability. For service inquiries, please see details on Sonnax’s Limited Lifetime Warranty on remanufactured valve bodies.

4L80-E

Remanufactured Valve Body
Part No. GM026

'91-'92, with Screw in Temp Sensor

View Instructions

Valve Body to Case Torque Specs in Sequence: 97 in-lbs

Gm026 ts web

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GM 4L80-E Valve Body Identification

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Topics: Identification Guides Remanufactured Valve Bodies Transmission GM 4L80-E Transmission

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  • Gm026

GM 4L80-E Valve Body Identification

Part Number Chart

Part NumberDescription
GM026 (Warranty Only)'91-'92 with Screw-In Temp Sensor
GM027
'92-'96 Temp Sensor in Wire Harness
GM028
'97-'03
GM029
'04-Later


Identification

'91-'96

Look for two small holes on the upper right side of the valve body. The holes do not appear on '97-later units.

The screw in the temperature sensor is only used in 1991. All later years use the temperature sensor located in the internal wiring harness.

'97-'03
The lube hole moved to the location
indicated by the arrow above.
'04-Later
Have a late-style EPC, which can be identified by the silver canister.