Oil Change Details - Buick Cascada Forums
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Old 09-18-2020, 06:05 PM   #1 (permalink)
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Join Date: Aug 2020
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Default Oil Change Details

This is what I came up with for details on doing your own oil change. I'm certainly no expert, so use at your own risk and feel free to correct if you have better information.

Drain plug (GM PN 55577568) has a rubber gasket so probably a good idea to replace or at least have an extra on hand in case it tears. Use a 15mm socket or a T45 bit to remove (recommend you use the 15mm socket). Installation torque = 18 ft-lb (based on other vehicles using the same plug).

As others have pointed out, access to the oil filter cover is much easier if you remove the brace which runs under it. There is a plastic cover over the braces on each side of the vehicle that will need to be removed. Each cover is held in place by 3 fasteners (7mm socket) and 2 clips. The two braces form an X under the vehicle with 2 fasteners at each of the corners. I removed 3 of the 4 corners, but next time I plan to just remove them all. T55 socket for the fasteners. I couldn't find an installation torque. Removal torque was ~35 ft-lbf though so I used 30 ft-lbf on installation. 2 of the 8 fasteners are longer than the others. If I remember correctly those go in the rear most positions.

Filter cover - 25mm socket to remove. Installation torque = hand tighten only

Filter - I used a Purolator ONE PL15839. Comes with the cover gasket. Costs about $11 locally or online.
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