Lb7 Duramax Water Pump Removal

The lb7 water pump actually has an impeller which is made out of cast.

Lb7 duramax water pump removal. You may have to use a pick tool or the screwdriver to separate it from the pump. These seals are tricky and i have heard of many comebacks when this seal is. I wanted to know what special tools. Remove the lower radiator hose.

Lisle makes a tool on amazon that makes this job way easier. The water pump on my 2001 gmc lb7 duramax had been leaking for some time we ll discuss the exact symptoms in a moment. Water pump failure lb7 duramax. Unlike the lbz water pump failure which is caused by the impeller being made of plastic the lb7 s issues are caused by the coolant side seal on the water pump.

You dont necessarily have to remove this pipe to get the pump out. Used to hold the flywheel engine stationary during removal of the hub bolt. 12 loosen the two 12mm bolts that hold the thermostat pipe to the top of the water pump. I knew the pump had to be replaced so i began accumulating the information i needed to do the job correctly.

For duramax 6 6l engines. Removing and replacing the water pump bypass tube on a 2006 lbz duramax engine. Water pump failure is common across just about every duramax out there. Had to borrow the gm special tool from my buddy at the dealership.

I wanted to know what parts were preferred and which ones should be avoided.