C 2500 Truck 2WD V6-262 4.3L VIN Z (1992)
Shift Indicator: Technical Service Bulletins
Instruments - Shift Indicator Application & Operation
Number: 92-222-7B
Section: 7B
Date: JUNE 1992
Corporate Bulletin No.: 249105
ASE No.: A3
Subject:
SHIFT INDICATOR LIGHT APPLICATION AND OPERATION
Model and Year:
1992 C/K AND P TRUCKS WITH 4.3L ENGINE AND MANUAL TRANSMISSION
Certain 1992 C, K and P 4.3L trucks do not make use of a shift indicator light:
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The shift light is commonly used to achieve improved fuel economy, by prompting the driver when to upshift.
Depending on which prom calibration is installed in the ECM/PCM, the shift light can have the following characteristics:
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Indicates proper shift point for maximum fuel economy.
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Indicates engine over-rev (above 4000 rpm).
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Shift light is inoperative.
Use chart to determine normal shift light operation for the vehicle in question:
