GMC 2004 Envoy - Page 425

Additional Required Services (cont’d)
Service and Miles (Kilometers)
25,000
(41 500)
50,000
(83 000)
75,000
(125 000)
100,000
(166 000)
125,000
(207 500)
150,000
(240 000)
Change automatic transmission
fluid and filter (normal service).
•
Automatic transfer case only:
Change transfer case fluid.
See footnote (g).
•••
Replace spark plugs.
An Emission Control Service.
•
V8 engine only: 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.
•
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