SPONSORED LINKS

79 GMC C3500 overheating

Tiny
SMURPHY85
  • MEMBER
  • 1979 GMC C3500
  • V8
  • 2WD
  • AUTOMATIC
I have a 79 GMC C3500 with a 454. The truck is overheating and I cant figure out why. I just replaced the radiator with a new 4 row, burped the system and topped off the fluid. The thermostat is 4 weeks old and I tested it. It still wors fine. The water pump is still good, not cracked or leaking. The fan is working strong. Any ideas?
SPONSORED LINKS
Sunday, December 12th, 2010 AT 3:21 AM

3 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Are you using any coolant, have you tested the radiator cap?

Mark (mhpautos)
Was this
answer
helpful?
Yes
No
Sunday, December 12th, 2010 AT 4:00 AM
Tiny
SMURPHY85
  • MEMBER
  • 2 POSTS
Yes Im using coolant and the radiator cap is fine. Its not leeking radiator fluid anywhere
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Sunday, December 12th, 2010 AT 4:27 AM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
You will have to get a head check done, this will check for a head problem.

Mark (mhpautos)
Was this
answer
helpful?
Yes
No
Sunday, December 12th, 2010 AT 6:24 AM

Please login or register to post a reply.

Related Engine Overheat Content

Is Your Engine Cool Enough to Check?
VIDEO
Is Your Engine Cool Enough to Check?
Instructional repair video
Overheating Symptoms
GUIDE
Overheating Symptoms
An overheating engine is never a good thing to have happen. If the problem is caught quickly you can save the headache of a major engine repair. Knowing the information from...
VIEW MORE

Sponsored links