Service Information

Figure 2 - Auxiliary Valve Body Location:

Service Action

To determine which service procedures and parts to use on a 1987 THM 700-R4 assembly with a Julian Date between 198 and 279, remove the transmission oil pan and look for an auxiliary valve body (refer to Figure 2).

Service Parts Information

If the auxiliary valve body is present, refer to 1987 GMSPO Catalog Listing dated September, 1986.

If the auxiliary valve body is not present, refer to GM Service Parts "Action" Bulletin #86-58.

Service Manual Reference

1987 Service Manual procedures and illustrations in manuals printed prior to November, 1986 may not include information provided in this bulletin.