1977 Buick LeSabre 5.7L HVAC
I have a vacuum leak at the control switch at any position I select. The vacuum doors will not operate either. Vacuum is on the purple line in from reservoir tank. All lines seem to be in the right place but not sure. I've replacd 3 switches, all have the same...
FIX posted 9/22/2007
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Message Closed w/FIX
Vehicle Data1977 Buick LeSabre
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Message Closed w/FIX
Vehicle Data
1977 Buick LeSabre
VIN | 4P69J7X121 |
Engine | 5.7 L / 8 cyl / GAS |
Trans | 3-speed Automatic |
Delivery | CARB |
Affected | HVAC |
Conditions | Vacuum |