GMC 2006 DURAMAX Manual page 80

Inspect engine cooling system. See footnote (e).
Inspect wiper blades. See footnote (f).
Inspect restraint system components. See footnote (g).
Lubricate body components. See footnote (h).
Check transmission fluid level and add fluid as needed.
Van models: Replace both fuel filters. An Emission Control Service.
See footnotes † and (i).
Pickup models: Fuel filter service. An Emission Control Service.
See footnotes † and (j).
Inspect shields and underhood insulation, vans with GVWR above
10,000 lbs (4 536 kg) and all pickups. See footnote (k).
Check air intake system. See footnote (l).
Van models: Inspect throttle system. See footnote (m).
6-6
Scheduled Maintenance (cont'd)
Service Maintenance I Maintenance II
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