Involved Vehicles

Involved are certain 1986 S/T-10 Light Duty Truck and Astro Van Models equipped with 2.5L L4 gas engine and built within the following vehicle identification number (VIN) breakpoints:

MODEL YEAR MODEL PLANT FROM THROUGH

1986 S/T-10 Moraine G2193946 G2208296
Shreveport G8180953 G8189777
1986 Astro Van Baltimore GB204352 GB217668

Involved vehicles have been identified by Vehicle Identification Number Computer Listings. Computer listings contain the complete Vehicle Identification Number, owner name and address data, and are furnished to the involved dealers with the campaign bulletin. Owner name and address data furnished will enable dealers to follow-up with owners involved in this campaign.

These listings may contain owner names and addresses obtained from State Motor Vehicle Registration Records. The use of such motor vehicle registration data for any other purpose is a violation of law in several states. Accordingly, you are urged to limit the use of this listing to the follow-up necessary to complete this campaign. Any dealer not receiving a computer listing with the campaign bulletin has no involved vehicles currently assigned.
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.

PARTS INFORMATION

Parts required to complete this modification are to be obtained from General Motors Warehousing and Distribution Division (GMWDD). To ensure these parts will be obtained as soon as possible, they should be ordered from GMWDD on a C.I.O. order with no special instruction code, but on an advise code (2).

QUANTITY
PART NO. DESCRIPTION PER VEHICLE

1052754 Coolant 1/2 Qt.
10007449 Thermostat Hsg. Gasket 1

When cylinder head replacement is required, the following
additional parts should be ordered. These parts should be
ordered only when required.

QUANTITY
PART NO. DESCRIPTION PER VEHICLE

10037283 Cylinder Head 1
10035039 Cylinder Head Gasket 1
10026023 Intake Manifold Gasket 1
10004804 Exhaust Manifold Gasket 1
3835333 Valve Stem Seals 8
1052915 RTV 1/4 Tube