All push buttons were working great. Heat and temperature control, great - just no AC - leaky system. During AC r&r I replaced the expansion valve. I did some pushing and tugging on the on the bundle of vac lines that were in my way. Now only the defrost button makes the blower function. Im hoping i just pulled a vac line loose from the back of the push button unit ? how do i get that thing out to see the back of it ?

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1996 E300 110,000
1985 300TD 212,000
1980 300D 238,000