Question about 2002 Chevrolet Silverado 1500

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Coolant keeps getting low but there are no leaks and it never runs hot

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Hello and welcome. I suspect cracked cylinder heads. this engine is very well know for heads cracking. what you need to to inspect for cracked heads. pull off both valve covers and inspect the cylinder heads using these instructions.

Some vehicles may experience a gradual coolant loss over time. A very low percentage of cylinder head(s) manufactured with an embossed Castech logo may develop a porosity crack in a very specific area.
Inspect the cylinder head assembly to determine if the casting was manufactured by Castech. This can be accomplished by inspecting for their casting logo located on top of the intake port, under the rocker arm support rail and in the spring deck cavity portion of the cylinder head.

If the cylinder head(s) is a Castech casting (1), inspect the area around the five oil drain holes for witness marks indicating coolant seepage over time (2).


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Posted on Sep 12, 2010

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Click the link below:----

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