Model Years Affected: 2001, 2002, 2003, 2004, 2006, 2007
A dirty throttle body may cause a lower than normal idle and possible stalling condition. Performing a throttle body service will commonly correct this concern.
cleaned with spray cleaner made for mass air sensor
Q&A > GMC > 2003 GMC Sierra 1500 HD
Common Problems > GMC Sierra 1500 HD