You cannot use an external pump.
These pumps have a know problem with the connectors going to the pump with the contacts springs getting weak and not making a good contact which leads to a voltage drop to the pump. Most of the deals sell a replacement pigtail to resolve the problem.
You also can't use the cheap aftermarket pumps. You need to use only Delco replacement pumps.
Thursday, August 26th, 2010 AT 4:41 AM