Low Coolant Level

[Donw1]

Any know why my "Low Coolant Level" indicator is on. I have a 05 Silverado with about 55,000 miles on it - the res level is fine - lots of presure even an hour after it has been running...

[jbplock]

Don, Welcome to the forum ..

See post #7 by GM Tech WhiteTruck in the following thread for a description of how to test if your coolant sensor circuit is working correctly.

http://www.thedieselpageforums.com/tdpforum/showthread.php?t=33841

[Kennedy]

Pressure that long after running tells me that you are likely making pressure via the combustion chamber. I hope I am wrong, but this isn't uncommon these days.