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#1
08-15-2011, 12:44 PM
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2002 GMC Safari Heat/AC Problem
My 2002 GMC Safari only blows heat & AC air out the defrost and lower foot vents, stopped blowing out the main "face" vents. I've tried a new heat/AC three knob control panel and the problem still exists. Any ideas what I can try next ??
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#2
08-15-2011, 10:08 PM
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Re: 2002 GMC Safari Heat/AC Problem
Follow your vacuum lines, inspecting every inch, including the boots. I'm willing to bet you have a broken/rotting/cracked vacuum line or two. Common on these vehicles.
If your fingers turn black when you touch them, it's time to replace them.
__________________
1993 Olds Bravada 4.3L CPI 1999 GMC Safari SLE AWD 2002 Chevy Astro LT AWD
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#3
08-15-2011, 10:43 PM
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Re: 2002 GMC Safari Heat/AC Problem
Your vacuum line will be discontinuous (broken) right in front of throttle body base- access it from in front after you remove the air cleaner box and air intake snorkel-- use windshield washer tubing (sold at anywhere) to splice back together any salvageable black plastic tubing- mostly it will crack in your hands where it has been exposed to heating/cooling/heating for years....
I've seen maybe a few dozen just like you describe...
__________________
Automotive A/C Engineer with: '99 IH 4700 Toy Hauler (2) '95 GEO Prizms both maroon '99 GMC Yukon '95 Chev 3500, 454 Dually Crew Cab- 145k miles- Wife's Camel trailer puller. '94 Astro- 370k miles '94 Firebird Formula- 5.7L 180k miles- gone- '92 Chevy Lumina Van 3.8L 264k '86 GMC S-15 - 2.8L 154k '87 Buick Park Ave . 187k '86 Buick Park Ave 3.8L 199k miles- gone '77 Chevy Vega- 2.5L 175k miles gone but not forgotten '68 Camaro 396 4 spd RS/SS -72k miles-
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