fuel CHEVROLET SILVERADO 2007 1.G Workshop Manual

Ination - Tire Pressure
Tires need the correct amount of air pressure to
operate effectively.
Notice:Do not let anyone tell you that
under-ination or over-ination is all right. It is
not. If your tires do not have enough air
(under-ination), you can get the following:
Too much exing
Too much heat
Tire overloading
Premature or irregular wear
Poor handling
Reduced fuel economy
If your tires have too much air (over-ination),
you can get the following:
Unusual wear
Poor handling
Rough ride
Needless damage from road hazardsA Tire and Loading Information label is attached to
the vehicle’s center pillar (B-pillar), below the
driver’s door lock post (striker). This label lists your
vehicle’s original equipment tires and their
recommended cold tire ination pressures. The
recommended cold tire ination pressure,
shown on the label, is the minimum amount of air
pressure needed to support your vehicle’s
maximum load carrying capacity.
For additional information regarding how much
weight your vehicle can carry, and an example of
the tire and loading information label, see
Loading Your Vehicle on page 427.
When to Check
Check your tires once a month or more. Do not
forget to check the spare tire. For additional
information regarding the spare tire, seeSpare
Tire on page 600.
561

You may notice, during cooler weather conditions,
that the tire pressure monitor light, located on
the instrument panel cluster, and the CHECK TIRE
PRESSURE message will appear when the
vehicle is rst started and then turn off as you
start to drive the vehicle. This could be an early
indicator that the tire pressures are getting low and
need to be inated to the proper pressure.
Each tire, including the spare (if provided), should
be checked monthly when cold and inated to
the ination pressure recommended by the vehicle
manufacturer on the vehicle placard or tire
ination pressure label. (If your vehicle has tires of
a different size than the size indicated on the
vehicle placard or tire ination pressure label, you
should determine the proper tire ination
pressure for those tires.)As an added safety
feature, your vehicle
has been equipped with
a tire pressure
monitoring system
(TPMS) that illuminates
a low tire pressure
telltale when one
or more of your tires is
signicantly
under-inated.
Accordingly, when the low tire pressure telltale
illuminates, you should stop and check your tires
as soon as possible, and inate them to the
proper pressure. Driving on a signicantly
under-inated tire causes the tire to overheat and
can lead to tire failure. Under-ination also
reduces fuel efficiency and tire tread life, and may
affect the vehicle’s handling and stopping ability.
Please note that the TPMS is not a substitute
for proper tire maintenance, and it is the driver’s
responsibility to maintain correct tire pressure,
even if under-ination has not reached the level to
trigger illumination of the TPMS low tire pressure
telltale.
564

Tires
To clean the tires, use a stiff brush with tire
cleaner.
Notice:Using petroleum-based tire dressing
products on your vehicle may damage the
paint nish and/or tires. When applying a tire
dressing, always wipe off any overspray
from all painted surfaces on your vehicle.
Sheet Metal Damage
If the vehicle is damaged and requires sheet metal
repair or replacement, make sure the body
repair shop applies anti-corrosion material to parts
repaired or replaced to restore corrosion
protection.
Original manufacturer replacement parts will
provide the corrosion protection while maintaining
the warranty.
Finish Damage
Any stone chips, fractures or deep scratches in
the nish should be repaired right away. Bare
metal will corrode quickly and may develop into
major repair expense.
Minor chips and scratches can be repaired with
touch-up materials available from your dealer.
Larger areas of nish damage can be corrected in
your dealer’s body and paint shop.
Underbody Maintenance
Chemicals used for ice and snow removal and
dust control can collect on the underbody. If these
are not removed, corrosion and rust can develop
on the underbody parts such as fuel lines,
frame, oor pan, and exhaust system even though
they have corrosion protection.
At least every spring, ush these materials from the
underbody with plain water. Clean any areas where
mud and debris can collect. Dirt packed in close
areas of the frame should be loosened before being
ushed. Your dealer or an underbody car washing
system can do this for you.
608

Fuses Usage
8 Front Washer
9 Oxygen Sensors
10 Anti-lock Brakes System 2
11 Trailer Back-up Lamps
12 Driver’s Side Low-Beam Headlamp
13 Engine Control Module (Battery)
14Fuel Injectors, Ignition Coils
(Right Side)
15Transmission Control Module
(Battery)
16 Vehicle Back-up Lamps
17Passenger’s Side Low-Beam
Headlamp
18 Air Conditioning Compressor
19 Oxygen Sensors
20 Transmission Controls (Ignition)Fuses Usage
21 Fuel Pump
22 Fuel System Control Module
23 Not Used
24 Not Used
25Fuel Injectors, Ignition Coils
(Left Side)
26 Trailer Park Lamps
27 Driver’s Side Park Lamps
28 Passenger’s Side Park Lamps
29 Fog Lamps
30 Horn
31Passenger’s Side High-Beam
Headlamp
32 Daytime Running Lamps
33 Driver’s Side High-Beam Headlamp
34 Not Used
617

Fuses Usage
35 Sunroof
36Key Ignition System, Theft Deterrent
System
37 Windshield Wiper
38 SEO B2 Uptter Usage (Battery)
39 Electric Adjustable Pedals
40 Climate Controls (Battery)
41 Airbag System (Ignition)
42 Amplier
43 Audio System
44Miscellaneous (Ignition), Cruise
Control
45 Tailgate Open/Close Assist
46 Airbag System (Battery)
47OnStar
®, Rear Seat Entertainment
Display
Fuses Usage
48 Instrument Panel Cluster
49 Power Take-Off
50Auxiliary Climate Control (Ignition),
Compass-Temperature Mirror
51Center High-Mounted Stoplamp
(CHMSL)
52 Rear Defogger
53 Heated Mirrors
54 SEO B1 Uptter Usage (Battery)
55Cigarette Lighter, Auxiliary Power
Outlet
56Automatic Level Control Compressor
Relay, SEO Uptter Usage
57 Climate Controls (Ignition)
58Engine Control Module, Secondary
Fuel Pump (Ignition)
618

J-Case Fuses Usage
59 Cooling Fan 1
60 Automatic Level Control Compressor
61 Heavy Duty Anti-lock Brake System
62 Cooling Fan 2
63 Anti-lock Brake System 1
64 Starter
65 Stud 2 (Trailer Brakes)
66 Left Bussed Electrical Center 1
67 Not Used
68 Heated Windshield Washer System
69 Four-Wheel Drive System
70Stud 1 (Trailer Connector Battery
Power) (Optional – 40A Fuse
Required)
71 Mid-Bussed Electrical Center 1
72 Climate Control Blower
73 Tailgate Open/Close Assist
74 Left Bussed Electrical Center 2Relays Usage
FAN HI Cooling Fan High Speed
FAN LO Cooling Fan Low Speed
ENG EXH VLV Not Used
FAN CNTRL Cooling Fan Control
HDLP LO/HID Low-Beam Headlamp
FOG LAMP Front Fog Lamps
A/C CMPRSR Air Conditioning Compressor
STRTR Starter
PWR/TRN Powertrain
FUEL PMP Fuel Pump
PRK LAMP Parking Lamps
REAR DEFOG Rear Defogger
RUN/CRANK Switched Power
619

ApplicationCapacities
English Metric
Fuel Tank
1500 Series Standard and Short Box 26.0 gal 98.0 L
1500 Series Long Box 34.0 gal 128.7 L
2500 Series and 3500 Series 34.0 gal 128.7 L
3500 Series Chassis Cab 50.0 gal 189.0 L
3500 Chassis Cab – Front Tank 27.0 gal 102.0 L
3500 Chassis Cab – Rear Tank 23.0 gal (if equipped) 87.0 L
Transmission Fluid (Pan Removal and Filter Replacement)
Auto 4-Speed Transmission 4L60-E Electronic
Transmission5.0 qt 4.7 L
Auto 4-Speed Transmission 4L70-E Super Duty
Transmission5.0 qt 4.7 L
Auto 6-Speed Transmission 6L80-E 6.0 qt 5.7 L
Auto 6-Speed Transmission 6L90-E 6.3 qt 6.0 L
Auto 6-Speed Transmission Allison 7.4 qt 7.0 L
Transfer Case Fluid 1.6 qt 1.5 L
Wheel Nut Torque 140 ft lb
190Y
After rell, the level must be rechecked. Add enough engine coolant so that the uid is within the proper operating
range.
621

Engine Specications
Engine VIN Code Transmission Spark Plug Gap
4.3L V6 X Automatic 0.060 in (1.52 mm)
4.8L V8 C Automatic 0.040 in (1.01 mm)
5.3L V8 Iron, Flexible Fuel with
Active Fuel Managementâ„¢,
SFI, OHV0 Automatic 0.040 in (1.01 mm)
5.3L V8 Aluminum, Flexible
Fuel with Active Fuel
Managementâ„¢, SFI3 Automatic 0.040 in (1.01 mm)
5.3L V8 Aluminum with Active
Fuel Managementâ„¢M Automatic 0.040 in (1.01 mm)
5.3L V8 Iron with Active Fuel
Managementâ„¢J Automatic 0.040 in (1.01 mm)
6.0L V8 K Automatic 0.040 in (1.01 mm)
6.0L V8 with Active Fuel
Managementâ„¢Y Automatic 0.040 in (1.01 mm)
622

Maintenance Schedule................................ 624
Introduction............................................... 624
Maintenance Requirements........................ 624
Your Vehicle and the Environment............ 625
Using the Maintenance Schedule............... 625
Scheduled Maintenance
(Gasoline Engine).................................. 627
Additional Required Services
(Gasoline Engine).................................. 631
Maintenance Footnotes
(Gasoline Engine).................................. 633Owner Checks and Services..................... 635
At the First 100, 1,000 and 6,000 Miles
(160, 1 600 and 10 000 km).................. 635
At Each Fuel Fill....................................... 636
At Least Once a Month............................. 636
At Least Once a Year............................... 637
Recommended Fluids and Lubricants........ 639
Normal Maintenance Replacement Parts ... 642
Engine Drive Belt Routing......................... 643
Maintenance Record.................................. 644
Section 6 Maintenance Schedule
623

This schedule is for vehicles that:
carry passengers and cargo within
recommended limits. You will nd these limits
on the Tire and Loading Information label.
SeeLoading Your Vehicle on page 427.
are driven on reasonable road surfaces within
legal driving limits.
are driven off-road in the recommended
manner. SeeOff-Road Driving on page 392.
use the recommended fuel. SeeGasoline
Octane on page 491.
The services inScheduled Maintenance (Gasoline
Engine) on page 627should be performed
when indicated. SeeAdditional Required Services
(Gasoline Engine) on page 631andMaintenance
Footnotes (Gasoline Engine) on page 633for
further information.
{CAUTION:
Performing maintenance work on a vehicle
can be dangerous. In trying to do some
jobs, you can be seriously injured. Do your
own maintenance work only if you have the
required know-how and the proper tools
and equipment for the job. If you have any
doubt, see your GM Goodwrench
®dealer to
have a qualied technician do the work.
SeeDoing Your Own Service Work on
page 489.
Some maintenance services can be complex.
So, unless you are technically qualied and have
the necessary equipment, you should have
your GM Goodwrench
®dealer do these jobs.
When you go to your GM Goodwrench
®dealer for
your service needs, you will know that GM-trained
and supported service technicians will perform
the work using genuine GM parts.
626