October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.
Lubrication System Troubleshooting Chart
Courtesy of GENERAL MOTORS CORP.
NOTE:
Always replace the PCV valve after an incident of coolant in the oil has been corrected and the system has been flushed. Refer to engine diagnostic section for excessive lube oil loss diagnostics.