Hvac vacuum line diagrams?

2002 CHEVROLET BLAZER

178,000 MILES • 4.3L • 6 CYL • 4WD • AUTOMATIC

JOE THE MARINE

MEMBER
86 POSTS
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Just replace my heater core. what a headache, and a job, and I have a brown vacuum line which is long stretches to the drivers side and can't figure out where it goes. all the other color coded lines are okay and installed , but this one is really driving me crazy. I'm lost on the issue. Thanks for any help.

Mar 21, 2020 at 7:07 AM

ASEMASTER6371

CERTIFIED EXPERT
52,796 POSTS

Good morning,

The brown line goes from the control head to the mode door actuator. I attached a diagram for you to view.

Roy

Images (Click to enlarge)

Mar 21, 2020 at 8:23 AM

JOE THE MARINE

MEMBER
86 POSTS

Thanks, that was it. I even removed my 2000 Blazer lower panels to trace it also, prior to your answer and did what you instructed, and found the same line ,which gave me piece of mind. Thanks again, and not have to replace both lower panels, but the headache is now complete and very good customer support on your end, you save the day and time for me.God bless all the work all of you do.

Mar 22, 2020 at 6:23 AM

ASEMASTER6371

CERTIFIED EXPERT
52,796 POSTS

Thank you for the kind words.

We are always glad to help.

Roy

Mar 22, 2020 at 6:25 AM