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In 02, the Envoy was a trim package for the Jimmy.. it didn't become a separate model until the next year, IIRC. So, you would have the 4.3 Vortec, and I have some unfortunate news for you - the oil pump is an integral part of the engine. By which I mean, it's inside the engine, and, to replace it, you'll need to pull out the engine, remove the oil pan, and access it that way.
yes but you will need to get new a new seal the bolts on the 04 are longer then the 02 but it will work
Japanese cruiser Chiyoda ended on 1927-02-28.
Look for an access panel above the fuel pump. If there is none you must remove the fuel tank in order to gain access to the pump.
WHERE IS IT LEAKING? IS IT THE PUMP ITSELF OR THE HOSES OR THE RES?
Did you replace the fuel filter? Is the pump actually running? If not check the fuse and fuel pump relay.
German auxiliary cruiser Komet was created on 1940-06-02.
Italian cruiser Bartolomeo Colleoni was created on 1932-02-10.
German minelaying cruiser Brummer was created on 1936-02-08.
German auxiliary cruiser Hansa was created on 1944-02-12.
Soviet cruiser Maxim Gorky ended on 1956-02-17.
French cruiser Duguay-Trouin was created on 1926-11-02.