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2002 Chevy Silverado Temp Gague

Tiny
WOODRIVER
  • MEMBER
  • 2002 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 143,000 MILES
I have noticed that the temp gauge is running very low sometimes not registering anything. When pulling a trailer it will read to the second notch and no more. Checked Transmission fluid and it need a quart. Had the transmission flushed at 110,000 miles. It is a heavy duty transmission and works great which is rare the chevrolet we have had. It has been real cold lately and truck was stuck in snow when this all started engine over heated and cooled down real fast but is running normal along with oil pressure
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Friday, February 6th, 2009 AT 3:35 PM

6 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
Hi:
I would start with the thermostat. Are you getting any heat?

Joe
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Friday, February 6th, 2009 AT 8:31 PM
Tiny
WOODRIVER
  • MEMBER
  • 3 POSTS
Yes the heater works real good always has.
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Saturday, February 7th, 2009 AT 9:10 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
I would start by trying the thermostat. But it's odd that the engine doesn't warm up and you have good heat. There are thermometers that can be used to test the coolant in the radiator when the engine is hot. I question if the temp sending unit is working properly. You may want to rent or see if a parts store has one to borrow and check the actual temp of the coolant when it's hot. Of course, never open the radiator when it's hot. Open it with the engine cold, put the thermometer in, and let it heat up. It should be around 190 to 205 degrees. If it warms up properly, the temp sending unit may be bad. The reason I say this is because you said you have good heat. If the engine wasn't warming up normally, the heat would be warm at best.

Let me know what you think.

Joe
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Saturday, February 7th, 2009 AT 5:57 PM
Tiny
WOODRIVER
  • MEMBER
  • 3 POSTS
The engine heats up normal it was the transmission gauge temp I have engine temp gauge also. Its normal. The transmission warmed today as it got up to the 60s it was running at 140 on the way home this afternoon.
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Saturday, February 7th, 2009 AT 8:10 PM
Tiny
WOODRIVER
  • MEMBER
  • 3 POSTS
I read your post closer I understand what you are trying to tell me
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Saturday, February 7th, 2009 AT 8:14 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
Hi:

Ha. We were talking about two different temp gages. Sorry. I was wondering why you said that you checked the trans and added a quart.

Joe
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Saturday, February 7th, 2009 AT 8:36 PM

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