Question about 1994 Chevrolet S-10 Blazer

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2001 chevy blazer, heater blowing cold air

I had my stereo changed on my blazer the other day. before it was changed, the heater would chase you out of the vehicle. since it was changed the heater does not blow hot air. it was suggested that some vacuum lines may have been disconnected under the dash that control the heater box and the water control outside. can someone send me a vacuum diagram or tell me how and what to do to reconnect these lines. thank you

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  • William Aten May 11, 2010

    Have you checked to make sure the radiator is full as being low on coolant will cause this same issue?

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  • 443 Answers

Pull the stereo back out . they have bumped the vacuum lines that connnect to the heater near the rear of the switch ..

Posted on Jan 25, 2009

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