GM Full-Size Trucks 1980-1987 Repair Guide

Hoses

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Upper and lower radiator hoses and all heater hoses should be checked for deterioration, leaks and loose hose clamps every 15,000 miles.

REMOVAL & INSTALLATION



  1. Drain the radiator as detailed later in this Section.
  2.  


CAUTION
When draining the coolant, keep in mind that cats and dogs are attracted by the ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.

  1. Loosen the hose clamps at each end of the hose to be removed.
  2.  
  3. Working the hose back and forth, slide it off its connection and then install a new hose if necessary.
  4.  
  5. Position the hose clamps at least 1 /4 in. from the end of the hose and tighten them.
  6.  

Always make sure that the hose clamps are beyond the bead and place in the center of the clamping surface before tightening them.

 
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