Chevrolet Chevette/1000 1976-1988 Repair Guide

Vacuum Diagrams

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Following are vacuum diagrams for most of the engine and emissions package combinations covered by this guide. Because vacuum circuits will vary based on various engine and vehicle options, always refer first to the vehicle emission control information label, if present. Should the label be missing, or should vehicle be equipped with a different engine from the vehicle's original equipment, refer to the diagrams below for the same or similar configuration.

If you wish to obtain a replacement emissions label, most manufacturers make the labels available for purchase. The labels can usually be ordered from a local dealer.



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Fig. Fig. 1The Vehicle Emission Control Information (VECI) has important tune-up instructions and specifications for your car



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Fig. Fig. 2Sample and explanation of an underhood Vehicle Emission Control Information label-1987 vehicle shown



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Fig. Fig. 3Vacuum diagram for 1976-78 California and high altitude vehicles



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Fig. Fig. 4Vacuum diagram for 1976-78 low altitude vehicles



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Fig. Fig. 5Vacuum diagram for 1979-80 vehicles



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Fig. Fig. 6Vacuum diagram for 1979-80 vehicles



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Fig. Fig. 7Vacuum diagram for 1981 vehicles



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Fig. Fig. 8Vacuum diagram for 1982 vehicles



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Fig. Fig. 9Vacuum diagram for 1983 high altitude vehicles with manual transmissions



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Fig. Fig. 10Vacuum diagram for 1983 vehicles with automatic transmissions and power steering



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Fig. Fig. 11Vacuum diagram for 1983 high altitude vehicles with manual transmissions and A/C



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Fig. Fig. 12Vacuum diagram for 1983 vehicles with automatic transmissions



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Fig. Fig. 13Vacuum diagram for 1983 California vehicles with manual transmissions



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Fig. Fig. 14Vacuum diagram for 1983 diesel vehicles



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Fig. Fig. 15Vacuum diagram for 1984 federal vehicles with automatic transmissions



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Fig. Fig. 16Vacuum diagram for 1984 federal vehicles with automatic transmissions



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Fig. Fig. 17Vacuum diagram for 1984 federal vehicles with manual transmissions



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Fig. Fig. 18Vacuum diagram for 1984 federal vehicles with manual transmissions



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Fig. Fig. 19Vacuum diagram for 1984 federal vehicles with manual transmissions



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Fig. Fig. 20Vacuum diagram for 1984 California and low altitude vehicles with automatic transmissions



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Fig. Fig. 21Vacuum diagram for 1984 California and low altitude vehicles with automatic transmissions



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Fig. Fig. 22Vacuum diagram for 1984 California and low altitude vehicles with manual transmissions



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Fig. Fig. 23Vacuum diagram for 1984 California vehicles with manual transmissions



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Fig. Fig. 24Vacuum diagram for 1984 Canadian vehicles with automatic and manual transmissions



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Fig. Fig. 25Vacuum diagram for 1984 Canadian vehicles with manual transmissions



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Fig. Fig. 26Vacuum diagram for 1984 Canadian vehicles with manual transmissions



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Fig. Fig. 27Vacuum diagram for 1984 Canadian vehicles with manual transmissions



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Fig. Fig. 28Vacuum diagram for 1984 federal diesel vehicles



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Fig. Fig. 29Vacuum diagram for 1984 California diesel vehicles with manual transmissions



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Fig. Fig. 30Vacuum diagram for 1984 California diesel vehicles with manual transmissions



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Fig. Fig. 31Vacuum diagram for 1984 federal diesel vehicles



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Fig. Fig. 32Vacuum diagram for 1985 federal vehicles



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Fig. Fig. 33Vacuum diagram for 1985 federal vehicles



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Fig. Fig. 34Vacuum diagram for 1985 federal vehicles



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Fig. Fig. 35Vacuum diagram for 1985 federal vehicles



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Fig. Fig. 36Vacuum diagram for 1985 California vehicles



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Fig. Fig. 37Vacuum diagram for 1985 California vehicles



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Fig. Fig. 38Vacuum diagram for 1985 California vehicles



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Fig. Fig. 39Vacuum diagram for 1985 California vehicles



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Fig. Fig. 40Vacuum diagram for 1985 Canadian vehicles



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Fig. Fig. 41Vacuum diagram for 1985 Canadian vehicles



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Fig. Fig. 42Vacuum diagram for 1986 federal vehicles with automatic transmissions and power steering



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Fig. Fig. 43Vacuum diagram for 1986 federal vehicles with automatic transmissions



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Fig. Fig. 44Vacuum diagram for 1986 federal vehicles with automatic transmissions



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Fig. Fig. 45Vacuum diagram for 1986 California vehicles with automatic transmissions and A/C



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Fig. Fig. 46Vacuum diagram for 1986 California vehicles with automatic transmissions



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Fig. Fig. 47Vacuum diagram for 1986 Canadian vehicles with NM5



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Fig. Fig. 48Vacuum diagram for 1986 federal vehicles with automatic transmissions



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Fig. Fig. 49Vacuum diagram for 1986 California vehicles with automatic transmissions and power steering



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Fig. Fig. 50Vacuum diagram for 1986 California vehicles with automatic transmissions

 
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