What you have been told is correct -- both sides of your question. You can just replace the pump itself - or - you can replace the entire module. Replacing the entire module is usually the way to go (as I mentioned in my first post) for various reasons, but you did not mention that this was the second fuel pump in three years. Being that the fuel pump installed 3 years ago was an A/C Delco pump and module, there is probably some other reason for the fuel pump failure. As long as the gas gauge is working properly, it is not necessary to change the entire module. However, be aware that taking apart the module to change the fuel pump is a very delicate task.
If I may ask, Why do you need to replace the fuel pump? Is the fuel pump dead? If so, did you check for voltage at the pump? And (if there is voltage), did you do a voltage drop test on both sides of the fuel pump circuit? And, was the chassy harness electrical connector changed 3 years ago at the dealer (as the fuel pump replacement procedure set by GM) calls for? If you are not doing the work, these are some questions to ask the person doing the work. The voltage drop test is very important to perform, as it will tell you if there is excessive resistance in the circuit - which will cause premature fuel pump failure.
Sorry your question has two correct answers.
Monday, July 5th, 2010 AT 1:22 AM
