Clean the intake manifold-(1) matingsurfaces.Inspect the intake manifold for damage.Inspect the intake manifold for cracks near metallicinserts.Clean and inspect the intake manifoldinsulator-(2) for damage.
Inspect the crankcase ventilation passages-(1) inthe intake manifold face for blockage.
Warning:Refer toSafety Glasses Warning.
Clean the crankcase ventilation passages with compressed airif necessary. Use a maximum of 172-kPa(25-psi) of air pressure.Replace the intake manifold as necessary.Power Mode Description and Operation
Serial Data Power Mode MasterPower Moding Block DiagramK9Body Control ModuleKR76Retained Accessory Power RelayKR73Ignition Main RelayKR104ABattery Saver Relay 1S39Ignition SwitchK20Engine Control ModuleKR75Engine Controls Ignition RelayHard-WiredSerial DataK9-Body Control ModuleKR76-Retained Accesso ...