K 1500 Truck 4WD V8-454 7.4L (1988)
FIGURE 2
7.
Using GM6165M rubber hose (bulk P/N 9439274) and standard 1/4" vacuum fittings make the vacuum harness shown in Figure No. 2 and
connect as shown. Usage of incorrect specification hose can result in vacuum hose collapse and cause a "Service Engine Soon" light.
Notice:
On trucks not equipped with an accessory vacuum fitting in the manifold install fitting P/N 14088336 and use caps P/N 343350 to plug any
unused port.
8.
Reinstall electrical connection.
For repairs performed under warranty use:
Labor Op:
T7500 and
Labor Time:
.3 Hour
