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Transmission shift problem fixed solenoid replaced


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I just replaced the A & B shift solenoids in my 1993 STS (only 44,000 miles on it).

The trans would not shift from 3rd to 4th, then the 2nd to 3rd shift broke. It works AOK now. The solenoid kit cost $73 and the pan gasket $43 !!!. I got the parts from a GM dealer.

The solenoid kit had a note from GM to dealers. It stated "All Transaxles assembled

prior to 04 1996 require replacement of the A&B solenoids, please refer to GM corporate Bulletin 77-71-73 dated december 1997". Does anyone know if this was a warrenty recall fixed for free by GM. IF so can I get my money refunded from


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Looks like it reads, there are newer shift solenoids, and if you have to service

the transmission, use the new ones:

Bulletin No.: 77-71-73

A/T - Revised Serviceability of 1-2/2-3 Shift Solenoids

Date: January, 1998



Service Availability of 1-2 and 2-3 Shift Solenoids


1993 Cadillac Allante

1993-98 Cadillac Eldorado, Seville

1994-98 Cadillac Concours

1996-98 Cadillac DeVille

1997-98 Cadillac d'Elegance

1995-98 Oldsmobile Aurora

with HYDRA-MATIC 4T80-E Transaxle (RPO MH1) and with 4.0L, 4.6L Engine (VINs C, Y, 9 - RPOs L47, LD8, L37)

During the 1996 Model Year, transaxle Julian date 047, a new 1-2, 2-3 shift solenoid assembly, and a pressure control solenoid valve fluid filter retainer, were implemented on the 4T80-E transaxle.

All transaxles with a Julian date prior to 1996, 047 must be serviced with a service kit - 1-2/2-3 shift solenoid valves, which is available at GMSPO. This kit, P/N 24211355, contains the 1-2, 2-3 shift solenoid valves, the pressure control solenoid valve filter, the pressure control solenoid valve fluid filter retainer and the bolt to hold the retainer to the lower control valve body. All components in this kit must be used when servicing these transaxles.

1996 transaxles with a Julian date after 047, and 1997 through 1998 transaxles, should be serviced with individual components


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