check engine light on 1999 Chevrolet Silverado 1500

Check engine light comes on intermittently...especailly when hauling a load.

by in Oakville, WA on April 09, 2009
2 answers
ANSWER by on April 09, 2009
There are many reasons why the check engine light comes on. Using a scanner is needed to pull the diagnostic code, and from there the system will have to be diagnosed.
ANSWER by on December 25, 2010
check fuel pressure bad fuel pump
Related Items:
i installed a cold air intake on my 2007 silverado new body style 1500. check engine light is on and have diagnostic codes. system too lean. the filter is huge. If i installed a smaller...
...se.dtd"> One or more fuel injectors may become stuck closed causing an engine misfire  and the Check Engine Light to illuminate. Our technicians tell us that this problem can be caused by some fuel additives...
A Loose or worn gas cap may cause Check Engine Light to illuminate.