One problem related to crankcase (pcv) has been reported for the 2007 Chevrolet Silverado 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Chevrolet Silverado 1500 based on all problems reported for the 2007 Silverado 1500.
When I try starting the truck it makes a clicking sound like it wants to turn over and then won't. Sometimes it never happens and other times it may take three or four times of trying to get it to start before it will. The service engine light came on and continued to stay on. Took it to a chevy dealer and was placed on the diagnostic computer and I was told codes found were po174 and po171. Smoke test was performed on evap system and induction system. Found leaks at the pcv hose, purge valve hoses and purge valve is stuck open. These were removed and replaced both purge valve hoses, purge valve and pcv hose. $523. 80 later the problem is still not fixed.