One problem related to gas recirculation valve (egr valve) has been reported for the 2005 Chevrolet Silverado 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Chevrolet Silverado 1500 based on all problems reported for the 2005 Silverado 1500.
Engine block heater: heater cord was unwrapped from factory wrap under hood cord was plugged into standard 110 volt temperature was at or around 15 degrees f cord was left plugged in for approximately 2 to 3 hours upon return, cord had a burt smell and had melted around the plug cord was unplugged. Cord was tried at a later date, with temp around 0 degrees f cord plug started smoking as soon as plugged in plug was immediately unplugged plug needs to be replaced (has not been done as of this report).