GMC G Service Manual page 1317

INSTRUMENT PANEL AND GAGES
SUBJECT
Description................................................................................................................................................................8C- 2
Speedometer......................................................................................................................................................... 8C- 2
Fuel Gage..............................................................................................................................................................8C- 2
Oil Pressure Gage................................................................................................................................................ 8C- 2
Temperature Gage................................................................................................................................................ 8C- 2
Engine Control/Ignition Switch............................................................................................................................8C- 2
Lamp Switch.......................................................................................................................................................... 8C- 2
Diagnosis of Speedometer System........................................................................................................................8C- 3
Diagnosis of the Fuel Gage.....................................................................................................................................8C- 4
Diagnosis of the Oil Pressure Gage......................................................................................................................8C- 5
Diagnosis of the Temperature Gage......................................................................................................................8C- 6
On Vehicle Service.................................................................................................................................................. 8C- 7
Speedometer Replacement.................................................................................................................................. 8C- 7
Speedometer Cable Core Replacement.............................................................................................................. 8C- 9
Fuel Gage Replacement........................................................................................................................................8C-10
Fuel Sender Unit Replacement............................................................................................................................8C-13
Temperature Gage Replacement.........................................................................................................................8C-13
Temperature Gage Sensor Replacement............................................................................................................ 8C-14
Oil Pressure Gage Replacement.........................................................................................................................8C-14
Oil Pressure Gage Sensor Replacement............................................................................................................ 8C-15
Voltmeter Replacement.........................................................................................................................................8C-15
Instrument Cluster Replacement.........................................................................................................................8C-16
Laminated (Printed) Circuit Replacement.......................................................................................................... 8C-17
Ignition Switch Replacement...............................................................................................................................8C-17
Lamp Switch Replacement...................................................................................................................................8C-17
Special Tools............................................................................................................................................................ 8C-17
SECTION 8C
CONTENTS
8C-1
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