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Engine
Table of Contents
6-5
Radiator Hos.e Replacement -
Engine Electrical .......................................... 6-674
)
Inlet (5.7 L) ........ , ................................... 6-617
Radiator Hose Replacement -
Outlet (3.8 L) .................................. , ....... 6-620
Radi.ator Hose Replacement -
· Outlet (5.7 L) .......................................... 6-623
Throttle Body Heater Hose
Replacement - Inlet (5.7 L) ..................... 6-625
Throttle Body Heater Hose
Replacement " Outlet (5. 7 L) .................. 6-626
Cooling Fan Replacement - Electric ........... 6-627
Cooling Fan Motor Replacement -
Electric ......................... , .......... , ............... 6-633
Cooling Fan Relay Replacement ................. 6-633
Thermostat Housing
Replacement (3.8 L) ................................ 6-634
. Thermostat Housing
Replacement (5.7 L) ............................... 6-637
Thermostat Replacement (3.8 L) ....... : ........ 6-638
thermostat Replacement (5.7 L) ................. 6-639
The.rmostat Bypass Pipes
Replacement (3;8 L) ............................... 6-639
Water Pump Replacement (3.8 L) .............. 6-640
Water Pump Replacement (5.7 L) .............. 6-642
Engine Coolant Temperature Sensor
Replacement(3.8 L) ., ............................. 6-650
Engine Coolant Temperature Sensor
Replacement (5.7 L) ............................... 6-651
Drain Cock Replacement ............................ 6-652
Fan Shroud Replacement ........................... 6-652
Radiator Replacement ................................ 6-654
Radiator Support Replacement ................... 6-658
Radiator Air Baffle Assemblies and
)
Specifications .............................................. 6-67 4
Fastener Tightening Specifications ............. 6-67 4
Battery Usage ............................................ 6-675
Battery Temperature vs Voltage Drop ........ 6-675
Starter Motor Usage ............................ .' ...... 6-675
Generator Usage ....................................... 6~675
Spark Plug Usage ...................................... 6-675
Spark Plug Wire Resistance ....................... 6-676
GM SPO Group Numbers .......................... 6-676
Schematic and Routing Diagrams .............. 6-676
Engine Electrical Schematic Icons .............. 6-676
Starting and Charging Schematics .............. 6-677
Component Locator ..................................... 6-680
Engine Electrical Components .................... 6-680
Engine Electrical Component Views ........... 6-682
Engine Electrical Connector End Views ...... 6-686
Diagnostic Information and Procedures ..... 6-686
A Diagnostic Starting Point - Engine
Electrical ................................................. 6-686
Symptoms - Engine Electrical ..................... 6-686
Starter Solenoid Does Not Click ................. 6-687
Starter Solenoid Clicks, Engine Does
Not Crank .............................. , ................ 6-689
Engine Cranks/Cranks Slowly, but Does
Not Start ................................................ :6-690
Starter Motor Noise Diagnosis .................... 6-691
Starter No Load Test ................................. 6-692
Battery Common Causes of Failure ............ 6-692
Battery Check ............................................ 6-693
Battery Terminal Check .............................. 6-694
Battery Hydrometer Displays Yellow Dot .... 6-695
Deflectors (Lower) .................................. 6-661
Battery Not Operating Properly ... , ............... 6-696
Radiator Air Baffle Assemblies and
Battery Hydrometer Displays Dark or
Deflectors (Upper) ....................... , .......... 6-662
Coolant Heater Replacement (3.8 L) .......... 6-663
Coolant Heater Replacement (5.7 L) .......... 6-664
Coolant Heater Cord
Yellow Dot .............................................. 6-700
Battery Electrical Drain/Parasitic
Load Test ............................................... 6-700
Generator Not Operating Properly .............. 6-704
Replacement (3:8 L) ............................... 6-666
Coolant Heater Cord
Replacement (5.7 L) ............................... 6-667
Generator Assembly Check ........................ 6-706
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1agnos1s .............. ·.· ...... 6-707
Spark Plug Wires Not Operating
·
· Description and Operation .......................... 6-669
Cooling System Description ........................ 6-669
Coolant Description .................................... 6-669
Coolant Recovery System Description ........ 6-669
Throttle Body Coolant System
Description· ............................................. 6-670
Properly .................................................. 6-709
Repair Instructions ...................................... 6- 71
o
Starter Motor Relay Replacement ............... 6-71 O
Starter Motor Replacement (3.8 L) ............. 6-711
Starter Motor Replacement (5. 7 L) .............. 6-713
Starter Pinion Clearance Check ................. 6-716
Coolant. Heater Description ......................... 6-670
Starter Shield Replacement (3.8 L) ............ 6-717
. Radiator Assembly Description ............. , ..... 6-670
Starter Shield Replacement (5. 7 L) ............ 6-717
Pressure Cap Description ........................... 6-671
Battery Charging ........................................ 6-718
Engine Cooling Fan Description -
l::lectric ................................................... 6-671
Battery Charge Low or Completely
Discharged ............................................. 6-719
Cooling Fan Relay Description ................... 6-672
Water Pump Description ............................ 6-672
Thermostat Description .... , .......... , ............... 6-672
Jump Starting in Case of Emergency ......... 6-720
Battery Negative Cable Disconnect/
Connect Procedure ................................. 6-722
Engine CoolantTemperature Sensor
Description ............................................. 6-672
Battery Cable Replacement
(3.8 L Positive) .................................. ,: ... 6-723
Air Baffles and Seals Description ............... 6-673
Battery Cable Replacement
Special Tools and Equipment ..................... 6-673
(3.8 L Negative) .................................... :.6-727
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