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Stuck on Defrost

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Old 12-11-2010, 01:42 PM   #1
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Default Stuck on Defrost

Replaced the intake gasket on my truck yesterday and got everything back together and running, well I only have defrost now. Im guessing its gotta be a vacuum problem and was wondering if anyone would possibly have a diagram showing all the vacuum lines that may have been broken.
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Old 12-11-2010, 05:06 PM   #2
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Spray some carb cleaner around the hoses to see if one is loose or broken, also the vacuum lines are pretty well formed to fit where they go.
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Old 12-11-2010, 06:46 PM   #3
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If you're sure it's due to the intake work, there are only a couple of options.

From the intake vacuum tree, you'll have several lines that aren't involved with defrost - brake booster, cruise, egr/smog, bmap, fuel pressure regulator, maybe more.

The one to look for should be going toward the passenger side firewall near the heater core/blower motor housing.
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