2001 Chevrolet Silverado Low Coolant Light

CHEVROLET SILVERADO
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SILVERADOGIRL13
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  • 3 POSTS
Three years ago I had this light come on. I took it in and the did some tests and confirmed it was a sensor that they didnt replace but the problem disapeared . So here I am now with the same problem but the light comes on intermittent the coolant is down about 3/4 litre and the technicians have placed dye into the tank to see if it's actually leaking. Can anyone tell me what is an acceptable level for the coolant. The truck is a 2001 Silverado 2wd. There are no spots on the ground and the coolant has never been changed. it has 84 000km's on it. Thanks for your help! :)
Feb 17, 2007 at 1:01 AM
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CHEVY22
  • ✓Experienced Mechanic
  • 1,375 POSTS
first thing to to is a pressure test on the cooling system , if the tech put dye in it you will be able to find external leaks but not internal , what engine is in it 4.3???lmk

jim
Feb 17, 2007 at 2:36 AM
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BILLYBOB11
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i have a 98 silverado and it seems to be leaking coolant from the transmission pan. is this possible?
Feb 25, 2007 at 4:26 AM
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HDBADBOY1997
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i had a similar situation where the low coolant light comes on and goes off. the dealership checked it and told me it was the sensor going bad. i had them check the water pressure and it turns out it's low. the water pump is leaking and there are no visible signs as far as water/anitfreeze marks on the ground or under the vehicle. replaced the waterpump and all is now good. hope this helps.
Feb 7, 2008 at 6:32 AM

Suggested Repair

Pressure-test the cooling system. Dye can reveal external leaks but not internal ones. If pressure is low and there are no ground spots, inspect the water pump; a failing coolant-level sensor can also trigger the light.

Conversation Summary

The owner of a 2001 Chevrolet Silverado reports an intermittent low-coolant light and about 0.75 L of missing coolant, with no spots on the ground and coolant that has never been changed. Dye was added to the tank. An expert advised a cooling-system pressure test because dye finds external leaks only, and asked which engine is installed. Another owner described a similar no-spot leak traced to a water pump after low system pressure was found; replacing the pump fixed it.

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