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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Vacuum hose in the wiring harness???

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Old 11-21-2007, 09:18 PM
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Default Vacuum hose in the wiring harness???
What is the vacuum line that connects to the intake manifold (right next to the line that goes to the fuel pressure regulator) and goes up into the wiring harness for??
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Old 11-21-2007, 09:21 PM
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its for the A/C (hvac)
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Old 11-21-2007, 09:39 PM
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oh, would disconnectin that cause a ses light?
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Old 11-21-2007, 10:06 PM
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not as long as you cap off the port to the intake so there is no vacuum leak. Buy your a/c / heat (hvac) system will not work properly..
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Old 11-21-2007, 10:12 PM
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If you take it off, you won't be able to choose which vents the air comes out of. They will be stuck on defrost.
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