|GM026 (Warranty Only)||'91-'92 with Screw-In Temp Sensor|
|GM027||'92-'96 Temp Sensor in Wire Harness|
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.
|The lube hole moved to the location|
indicated by the arrow above.
|Have a late-style EPC, which can be identified by the silver canister.|
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