gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Campaign - Oil Cooler Outlet Hose Improperly Seated|Page 1628 > < Oil Filters - Enhanced Anti-Drainback Valves
Page 1
background image

Technical Service Bulletin # 90C106B

Date: 900501

Campaign - Oil Cooler Outlet Hose Improperly Seated

GMC NUMBER:

90-C-10

GROUP:

6B   Engine Cooling

DATE:

May, 1990

SUBJECT:

ENGINE OIL COOLER LINE FITTING

MODELS:

1990 L-VAN WITH KC4 ENGINE OIL COOLER

CONTENTS OF THIS BULLETIN SENT TO DEALERS VIA DCS MESSAGE ON FEBRUARY 9, 1990

NOTE:

ADDITIONAL VINS ADDED TO "VEHICLES INVOLVED" SINCE DCS MESSAGE WAS SENT

Certain early 1990 L-Vans equipped with an engine oil cooler have a fitting on the oil cooler outlet hose that may not be properly seated. If this fitting
disconnects it can result in rapid loss of engine oil and possible engine damage. To assure that the fitting is properly seated, it will be necessary to
disconnect the hose assembly and reconnect it properly.

Vehicle, Dealer, Owner Information

Involved are certain early 1990 L-Vans equipped with an engine oil cooler that has a quick connect fitting. Dealer codes and vehicles involved and
requiring inspection/repair are listed below:

Campaign - Oil Cooler Outlet Hose Improperly Seated|Page 1628 > < Oil Filters - Enhanced Anti-Drainback Valves