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I replaced my coolant sensor on 1990 GMC 1500.

Tiny
HANSENFL
  • MEMBER
  • 1990 GMC C1500
  • 240,000 MILES
I replaced my coolant sensor on 1990 gmc 1500 and now the temp gauge max out and the check engine is on.
Saturday, December 29th, 2012 AT 2:05 AM

2 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Check coolant level.

What is the code for the light?

Roy
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Saturday, December 29th, 2012 AT 2:55 AM
Tiny
HANSENFL
  • MEMBER
  • 2 POSTS
Correction it was the Coolant Temp Sender. It controls my gauge. The coolant level is full and I have not yet gotten it tested for a light code. After I replaced the Sender unit I drove it for about 2 miles when the temp gauge maxed out and the light came on. Could it be my thermostat or could the new sending unit be faulty?

Thanks
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Sunday, December 30th, 2012 AT 2:40 AM

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