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How do you set a modulater for a 1990 Chevy 1500?

Updated: 8/16/2019
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19y ago

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Remove the vacuum hose from modulator use small screw driver (pocket screwdriver) when hose is off you will see slots in the end where vacuum hose connects screw in or out then reattach hose and test drive may take couple of adjustments to get where you want.

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19y ago
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Q: How do you set a modulater for a 1990 Chevy 1500?
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