1991 GMC C1500 overheating

1991 GMC C1500
163,153 MILES • 6 CYL • 2WD • AUTOMATIC
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MANOFBRICK
  • MEMBER
  • 2 POSTS
my truck was losing fluid from the water pump so I replaced it. It was still overheating so I replaced the thermostat. It is still overheating. Any suggestions where to go from here?
Feb 22, 2010 at 8:57 PM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
let the truck overheat and shut it off. place your hand on different areas of the radiator. If you feel cold or cool anywhere on the radiator it should be replaced. It should be the same temp all over. If there are also any loose fins ndcorroded, usually at edges, replace it. Replace the radiator cap when you do the radiator too.....
Feb 27, 2010 at 3:21 PM
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SBARKER249
  • MEMBER
  • 3 POSTS
Relace radiator hoses. If they are old, they will collapse when you accelerate, restricting water flow.
Jun 4, 2010 at 5:27 PM
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