Section 272 (Drive Axles - QUADRASTEER): Lubrication
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Fill differential with Axle Lubricant (AM P/N 12378557 (Canadian P/N 88901362) or equivalent meeting GM Specification 9986207. Fill differential to within 1/4" (6 mm) below edge of filler hole. If rear drive axle has been drained, fill capacity is 3.0 qts. (2.84 L).