GMC 2007 Sierra - Manual (Page 620)

Scheduled Maintenance (cont’d)
Service Maintenance I Maintenance II
Inspect suspension and steering components. See footnote (b).
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Inspect engine cooling system. See footnote (c).
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Inspect wiper blades. See footnote (d).
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Inspect restraint system components. See footnote (e).
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Lubricate body components. See footnote (f).
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Check transmission fluid level and add fluid as needed.
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Inspect shields, vehicles with diesel engine or with GVWR above
10,000 lbs (4 536 kg) only. See footnote (n).
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