from fuel rail. Disconnect vacuum hoses. Disconnect injector harness
connectors. Disconnect harness connectors from front of supercharger.
Remove fuel rail bolts. Remove fuel rail and injectors as an assembly.
See FUEL RAIL & INJECTORS.
3) Disconnect harness connectors from IAC valve, TP sensor,
MAP sensor, MAF sensor, EGR valve, boost control solenoid, and ECT
sensor. Remove air intake duct from throttle body. Remove EGR pipe
from supercharger. Disconnect throttle and cruise control cables.
Remove boost pressure manifold and vacuum block. Remove cable bracket
and tensioner bracket to supercharger mounting stud.
NOTE: Tensioner bracket-to-supercharger stud must be removed, or
supercharger cannot be lifted high enough to clear lower
intake manifold locator pins. See Fig. 1.
4) Remove throttle body from supercharger. Remove
supercharger-to-intake manifold bolts and remove supercharger. Remove
supercharger gasket and coolant passage "O" rings.
Fig. 1: Identifying Supercharger Components (3.8L - VIN 1)
Courtesy of General Motors Corp.
Installation
Ensure locator pins are in their proper location on intake
