G 3500 1 Ton Van V8-454 7.4L (1989)
Torque bolt (79) to 32 lbs. ft. (43 N-m) and assure the bolt head (79) is seated to the bottom of the case (10).
Important
DO NOT USE NEW BOLT (79) WITH PREVIOUS CASE (10).
Figure 3 - 1990 3L80 Model Year Case View
SERVICE PARTS INFORMATION (See Figure 3)
Parts are currently available through GMSPO.
SERVICE MANUAL REFERENCE Refer to the Unit Repair section of the appropriate Service Manual for the proper Pump Bushing and Seal
replacement procedures.