January 01, 2013

GM 4L80-E Valve Body Identification

Valve Body Xpress

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.

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