Safari Van M V6-262 4.3L (1985)
OWNER NOTIFICATION
Owners of vehicles involved in this SPECIAL POLICY ADJUSTMENT will be notified by GMC Truck (see copy of owner letter included with this
Bulletin).
SERVICE PROCEDURE - 1985 MODEL 4.3L CARBURETED ENGINE
Reduce cold idle speed to 1600 rpm.
1.
Remove dash extension..
2.
Remove engine cover.
FIGURE NO. 1
3.
Install tachometer. The tachometer (tach) terminal is next to the engine control switch (bat) connector on the distributor cap (Reference Figure No.
1).
NOTICE:
The tachometer terminal must never be allowed to touch ground, because
damage to the module inside the distributor and/or ignition can result.
4.
Reduce cold idle speed to 1600 rpm by adjusting the fast idle screw. Refer to tune up label for procedure.
5.
Remove tachometer and reinstall engine cover and dash extension.
6.
On a clean dry surface, next to the existing tune up label located on the fan shroud, place label P/N 10066488.
PARTS INFORMATION
Labels to show fast idle speed specification change have been shipped directly to all dealers who originally ordered 1985 M vans. If additional labels are
required please call: Adistra Corporation, (313) 425-2600, Extension 396.
PART NUMBER DESCRIPTION
QUANTITY
10066488
Label
1
The label is not to be ordered from General Motors Service Parts Operation (GMSPO).
WARRANTY INFORMATION
Dealers should submit a warranty claim on each vehicle completed.
LABOR
OPERATION
TIME
*NET