Blazer Full Size V8-350 5.7L (1989)
Remove or Disconnect
1. Battery ground cable.
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Drain the radiator.
2. Heater hoses from the core tubes.
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Plug the core tubes to prevent spillage.
3. Instrument panel compartment and door.
4. Center duct from the defroster outlet duct.
5. Center lower air distributor and center air outlet ducts.
6. Temperature door cable.
7. Nuts from the three selector duct studs that project into the dash panel.
8. Defroster outlet duct-o-dash panel screw (inside the vehicle).
9. Defroster outlet duct assembly.
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Pull rearward until the core tubes clear the dash panel.