Trouble Ticket Help Requests for DTC P1663
|2002 GMC C7500 Topkick C7H042 8.1L code P1663 VIN: 1GDM7H1E72
P1663: Change engine oil lamp control circuit. DTC P1663 change engine oil lamp control circuit? I cannot find any diagnostic information on this code. Has anyone seen this code before and if so any suggestions on where to begin to fix it. I cleared the code and it came right back. Any help will be appreci...
|September 29, 2014|