A big thanks to all that posted help in replacing oil pressure sensor in 2003 Tahoe. I replaced my gauge cluster ($189.00 at O'Reilly-those guys are great). My speedo corrected but not the oil pressure gauge Next job was to replace the oil pressure sensor. I am a 60 year single mom helping with college expenses and was determined to attack the job myself based on info I found on this forum. After a few scrapes and bruises I was able to replace the oil pressure sensor all by myself for $51.00 including the special oil pressure sensor socket. It wasn't easy but the satisfaction was exhilarating!!! Thanks to all that posted and please let me know if I can help!