A/T - New 4BC Model Introduction

Group Ref.: Transmission

Bulletin No.: 477112

Date: April, 1994

INFORMATION

SUBJECT:
NEW "4BC" MODEL INTRODUCTION

MODELS:
1994 CADILLAC ELDORADO AND SEVILLE

TRANSAXLE APPLICATIONS:
HYDRA-MATIC 4T80-E (RPO MH1)





GM Powertrain has a new "4BC" model for the HYDRA-MATIC 4T80-E. This model supersedes the "4AJ" model. You can service the previous "4AJ" model with the new "4BC" model, P/N 24201795. The "4BC" model vehicles must be serviced with "4BC" units. Refer to Figure 1.

V.I.R orders for the "4AJ" lower valve body assemblies, P/N 24201070, can use the "4BC" lower valve body assembly, P/N 24201192. Orders for the "4BC" lower valve body assemblies must be serviced with P/N 24201192.

Parts are currently available from GMSPO.