Gmc 2007 Sierra User Manual download pdf (Page 625)

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101

(k) Inspect system. Check all fuel and vapor lines

and hoses for proper hook-up, routing, and

condition. Check that the purge valve, if the vehicle

has one, works properly.

(m) Change automatic transmission ﬂuid and

external transmission ﬁlter if the vehicle is mainly

driven under one or more of these conditions:

− In heavy city traffic where the outside

temperature regularly reaches 90°F (32°C) or

higher.

− In hilly or mountainous terrain.

− When doing frequent trailer towing.

− Uses such as found in taxi, police, or delivery

service.

(n) Vehicles with diesel engine or with GVWR

above 10,000 lbs (4 536 kg) only: Inspect shields

for damage or looseness. Adjust or replace as

required. This is a Noise Emission Control Service.

Applicable to vehicles sold in the United States

and recommended for vehicles sold in Canada.

(p) If you drive regularly under dusty conditions,

inspect the ﬁlter or change indicator (if equipped)

at each engine oil change.

(q) Visually inspect belt for fraying, excessive

cracks, or obvious damage. Replace belt if

necessary.

Owner Checks and Services

These owner checks and services should be

performed at the intervals speciﬁed to help

ensure the safety, dependability, and emission

control performance of your vehicle. Your

GM Goodwrench

dealer can assist you with

these checks and services.

Be sure any necessary repairs are completed at

once. Whenever any ﬂuids or lubricants are added

to your vehicle, make sure they are the proper

ones, as shown in Recommended Fluids and

Lubricants on page 629.

At the First 100, 1,000 and 6,000

Miles (160, 1 600 and 10 000 km)

Check dual wheel nut torque. For proper torque,

see Capacities and Speciﬁcations on page 609.

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Gmc 2007 Sierra User Manual Page 625

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