Question about GMC Yukon XL

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Our 2004 yukon has become Hard Starting. I took it to the dealer and they said it was the Fuel pump. Sometimes it starts on the first turn of the key and the next time we will have to try starting twice. I need directions on how to drop the tank and replace the fuel pump if this is the problem

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First you have to make sure there is little to no fuel in tank. Drive vehicle untill it is almost empty. Then disconnect fuel pump relay and fuse. Try to start vehicle to relieve fuel pressure. If you do not have a hoist elevate the vehicle on 4 jack stands. Disconnect the fuel line and return line nearest tank. Disconnect filler hose fron tank. Place 18" x18" piece of plywood on hydraulic jack and place under and against middle of tank. Disconnect straps holding tank in place. Lower tank slowly untill you can disconnect electrical connectors. Remove tank and change pump. There is a ring holding sending unit and pump on tank. this ring can be moved with a mallet. Make sure to clean off all debris from top of tank before removing sending unit. Remove sending unit carefuly and remember where float is orriented in tank.

Posted on Aug 20, 2010

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Posted on Jan 02, 2017

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