GMC Denali 2004 - Page 413

Additional Required Services (cont’d)
Service
25,000
(41 500)
50,000
(83 000)
75,000
(125 000)
100,000
(166 000)
125,000
(207 500)
150,000
(240 000)
Replace spark plugs and inspect spark
plug wires.
An Emission Control
Service.
•
Engine cooling system service
(or every 5 years, whichever occurs
first).
An Emission Control Service.
See footnote (i).
•
Inspect engine accessory drive belt.
An Emission Control Service.
•
6-7