Air and heat control

Asked by Guru8TB7L Dec 27, 2019 at 10:45 PM about the 2001 Chevrolet Blazer LT 4-Door RWD

Question type: Maintenance & Repair

Only blows through middle vent

1 Answer

157,625

Most likely the mode door and or the defrost door inside the heater box under the dash is broken. This is very common on these vehicles. The only way to replace the doors is to remove the entire dash assembly. A very major undertaking!! To have a shop do the job you're looking at $1000 easily! Hope that helps! Jim

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