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 , 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 , December 25, 2010
check fuel pressure bad fuel pump