GMC 2003 GMT560 T-Series Owner's Manual page 233

Single Speed Axle
15040S
19060S
21060S
23090S
26105S
Two-Speed Axle
19060T
21060T
23080T
Tandem Axles
DS404 (front)
RS404 (rear)
Above capacities (volumes) are approximate.
Rear Axle Lubricant Capacity
Application
Capacities
English
21.0 pints
28.0 pints
28.0 pints
40.0 pints
56.0 pints
34.0 pints
34.0 pints
40.0 pints
31.0 pints
28.0 pints
Metric
10.3 liters
13.0 liters
13.0 liters
19.0 liters
26.5 liters
16.0 liters
16.0 liters
19.8 liters
14.5 liters
13.0 liters
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