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Number:85C14Section:6 & 6ADate:August, 1985PRODUCT CAMPAIGN 85C14 ENGINE OIL COOLER LINES MAY FAIL
1985 C/K/G/P MODEL LIGHT DUTY TRUCKS EQUIPPED WITH AN ENGINE OIL COOLER TO:ALL CHEVROLET DEALERS
General Motors has determined that some 1985 C/K/G/P Light Duty trucks equipped with a gasoline engine or a 6.2L diesel C or J engine that have an engine oil cooler, RPO KC4, may experience failure of the engine oil cooler hose/hoses. During normal operation the hoses may burst, resulting in a rapid engine oil loss which could result in internal engine damage.
To prevent the possibility of this condition occurring, involved vehicles must be inspected for suspect oil cooler lines and replacement lines installed.
OWNER NOTIFICATION
Owners will be notified of this campaign on their vehicles by Chevrolet Motor Division (see copy of Owner Letter included with this bulletin).
DEALER CAMPAIGN RESPONSIBILITY
Dealers are to service all vehicles subject to this campaign at no charge to owners, regardless of mileage, age of vehicle, or ownership, from this time forward.
Whenever a vehicle subject to this campaign is taken into your new or used vehicle inventory, or it is in your dealership for service in the future you should take the steps necessary to be sure the campaign correction has been made before reselling or releasing the vehicle.
Owners of vehicles recently sold from your new vehicle inventory are to be contacted by the dealer, and arrangements made to make the required modification according to instructions contained in this bulletin.
Inspect both engine oil cooler lines for manufacturing date code (reference the 1985 Light Duty Truck Service Manual, ST-330-85, for cooler line location). Lines marked with a date code of 2654, as shown in Figure No. 1, must be replaced. In addition, replace the cooler line if the date code cannot be read or if the date code does not appear on the hose section of the line.
84/85, are under an Active Recall that are still in effect, oil cooler lines GM 14061344 and 14061345.
Rubber hoses/metal lines that go across the radiator.
Napa BK 8232229 (upper) BK 8232235 (lower) OR Dorman 625-154 and 625-155
The problem originated with the rubber lines of course but the issue with the aluminum lines was contact with fan housing and time. Wore down the metal and created a hairline leak after 25 years.
New lines get installed with an extra zip tie to keep the contact from happening. Nalley Buick GMC
178 Altama Connector
Brunswick, GA 31525
888-501-2401