Originally Posted by Eric Breeze

Ok I am having the same problem with the low oil pressure warning light and check engine light coming on as others are. I have an 08 Suburban 1500 LTZ 6.0L 4 wheel drive with 112,000 miles. Never had this problem until now. Oil gauge started bouncing around then steadily began dropping eventually setting off warning. Stopped checked oil, it was full. Started back up pressure was back up. Drove it & within a few miles started dropping again. Took it to a friend who owns a shop and is an ASE certified master mechanic. He replaced the oil pressure sending unit. He said he wasn't charging me until we saw if that solved the problem. It worked for one day then the same thing. Well I had to take it to the dealer to get the door handle fixed so I had them check it out. They just called and said it was the oil pressure sending unit and was going to be $700 to fix. First I said I just had that replaced last week and second I said $700? The GM service guy said well we show that is what the problem is and the part alone is $600. Needless to say they are not fixing my vehicle. I called my mechanic friend and told him what the dealer said. He told me the OE GM part is only $86.24 and list 3.6 hrs labor. Thanks a lot Tyler Motors for trying to screw your customers, I bought this vehicle from you, I am going to trade it in for a Ford.