GMC SONOMA 2001 Owner's Manual

6-66
Fuse/Circuit
BreakerUsage
3 Cruise Control, Body Controls
TBC, Cruise Module,
Cruise Switch
4 Gages, Body Controls TBC,
Instrument Panel Cluster,
B+ Power
5 Parking Lamps, Power Window
Switch, TBC, Ashtray Lamp
6 STR WHL ILLUM
7 Headlamp Switch, Body Controls
TBC, Headlamp Relay
8 Courtesy Lamps, Inadvertent
Power Relay
9 HVAC Control Head
10 Turn Signal
11 Instrument Panel Cluster,
Engine ControlsFuse/Circuit
BreakerUsage
12 Interior Illumination
13 Auxiliary Power
14 Power Locks
15 4WD Switch, Engine Control
(VCM, PCM, Transmission)
16 Supplemental Inflatable Restraint
17 Front Wiper
18 STR WHL RDO IGN
19 Radio Battery
20 AMPF
21 HVAC I, HVAC Control Head,
HVAC Devices
22 Anti
-Lock Brakes
23 Rear Wiper
24 Radio, Ignition

6-67 Engine Compartment Fuse Block
The fuse block is located under the hood on the driver's
side of the engine compartment. See ªEngine
Compartment Overviewº in the Index for more
information on location.
Remove the cover by turning the fastener
counterclockwise. To reinstall the fuse panel cover, push
in and turn the fastener clockwise.
Name Usage
TRL TRN Not Used
TRR TRN Not Used
TRL B/U Not Used
VEH B/U Vehicle Back
-Up Lamps
RT TURN Right Turn Signal Front
LT TURN Left Turn Signal Front
HDLP W/W Not Used

6-68
Name Usage
LT TRN Left Turn Signal Rear
RT TRN Right Turn Signal Rear
RR PRK Right Rear Parking Lamps
TRL PRK Not Used
LT HDLP Left Headlamp
RT HDLP Right Headlamp
FR PRK Front Parking Lamps
INT BAT I/P Fuse Block Feed
ENG I Engine Sensors/Solenoids, MAF,
CAM, PURGE, VENT
ECM B Engine Control Module, Fuel
Pump Module, Oil Pressure
ABS Anti
-Lock Brake System
ECM I Engine Control Module Injectors
BTSI Automatic Transmission Shift
Lock Control System
B/U LP Back
-Up Lamps
A/C Air Conditioning
W/W PMP Not Used
HORN Horn
IGN B Column Feed, IGN 2, 3, 4
RAP Retained Accessory Power
LD LEV Not UsedName Usage
OXYSEN Oxygen Sensor
IGN E Engine
MIR/LKS Mirrors, Door Locks
FOG LP Fog Lamps
IGN A Starting and Charging IGN 1
STUD #2 Accessory Feeds, Electric Brake
PARKLP Parking Lamps
LR PRK Left Rear Parking Lamps
IGN C Starter Solenoid,
Fuel Pump, PRNDL
HTDSEAT Not Used
HVAC HVAC System
TRCHMSL Not Used
RRDFOG Not Used
TBC Truck Body Computer
CRANK Clutch Switch, NSBU Switch
HAZLP Hazard Lamps
VECHMSL Vehicle Center
High
-Mounted Stoplamp
HTDMIR Heated Outside Mirrors
ATC Transfer Case (Four
-Wheel Drive)
STOPLP Stoplamps
RR W/W Not Used

6-69
Replacement Bulbs
Lamps Quantity Number
Halogen Headlamps, Composite Low
-Beam2 9006 HB4 or 9006 LL
Halogen Headlamps, Composite High
-Beam2 9005 HB3
Tail and Stoplamps 2 3057
Rear Sidemarker Lamps 2 194
Front Sidemarker Lamps 2 194NA
Front Turn Signal Lamps 2 3457A
Center High
-Mounted Stoplamp2 577

6-70
Capacities and Specifications
Please refer to ªRecommended Fluids and Lubricantsº
in the index for more information. See refrigerant
change label under the hood for charge capacity
information and requirements.
Wheel Nut Torque100 lb
-ft (140 N´m) . . . . . . . . . .
Tire PressureSee the Certification/Tire . . . . . . . . . . .
label. See ªLoading Your Vehicleº in the Index.
Cooling System*
2.2L Engine 9.9 quarts (9.4 L). . . . . . . . . . . . . . . . . .
4.3L Engine w/Auto. Trans. 13.8 quarts (13.1 L). . . .
4.3L Engine w/Manual. Trans. 14.1 quarts (13.3 L). .
Engine Crankcase
- Oil and Filter Change*
2.2L Engine 4.5 quarts (4.3 L). . . . . . . . . . . . . . . . . .
4.3L Engine 4.5 quarts (4.3 L). . . . . . . . . . . . . . . . . . Fuel Capacity
Reg./Ext. Cab 18.5 U.S. Gallons (70.0 L). . . . . . . . . .
Crew Cab 19.0 U.S. Gallons (71.9 L). . . . . . . . . . . . .
Automatic Transmission*
Drain and Refill 5.0 quarts (4.7 L). . . . . . . . . . . . . . .
Differential Fluid
Rear Axle 4.0 pints (1.9 L). . . . . . . . . . . . . . . . . . . . .
Front Axle 2.6 pints (1.2 L). . . . . . . . . . . . . . . . . . . .
Refrigerant, Air ConditioningSee Refrigerant . . .
Label under the hood.
*After refill, the level must be checked.
All capacities are approximate. When adding, be sure to
fill to the appropriate level or as recommended in this
manual. See ªRecommended Fluids and Lubricantsº in
the Index.

6-71 Engine Specifications
Engine ªVORTECº 2200 L4 ªVORTECº 4300 V6
Type L4 V6
VIN Code 5 W
Firing Order
1
-3-4-21-6-5-4-3-2
Horsepower (T Series) N/A 190 @ 4,400 rpm
Horsepower (S Series) 120 @ 5,000 rpm 180 @ 4,400 rpm
Thermostat Specification
195
F (91
C) 195
F (91
C)
Spark Plug Gap 0.040 inches (1.01 mm) 0.060 inches (1.52 mm)

6-72
Normal Maintenance Replacement Parts
Replacement part numbers listed in this section are based on the latest information available at the time of printing
and are subject to change. If a part listed in this manual is not the same as the part used in your vehicle when it was
built, or if you have any questions, please contact your GM dealer.
Engine ªVORTECº 2200 L4 ªVORTECº 4300 V6
Oil Filter PF47 PF47
Air Cleaner Filter A1163C A1163C
PCV Valve N/A CV769C
Automatic Transmission Filter Kit 24200796 24200796
Spark Plugs
41
-948 41-932
Fuel Filter GF481 GF481
Windshield Wiper Blades Trico (20 inches/51 cm) Trico (20 inches/51 cm)

6-73 Vehicle Dimensions*
Wheelbase
Reg Cab Short Box 108.3 inches (275.1 cm). . . . . .
Reg Cab Long Box 117.9 inches (299.5 cm). . . . . .
Extended Cab 122.9 inches (312.2 cm). . . . . . . . . .
Crew Cab 122.9 inches (312.2 cm). . . . . . . . . . . . . .
Length
Reg Cab Short Box 189.0 inches (480.1 cm). . . . . .
Reg Cab Long Box 204.9 inches (520.4 cm). . . . . .
Extended Cab 203.6 inches (517.1 cm). . . . . . . . . .
Crew Cab 202.8 inches (515.0 cm). . . . . . . . . . . . . .
Height
2WD Reg Cab 62.1 inches (157.7 cm). . . . . . . . . . .
2WD Ext Cab 62.2 inches (158.0 cm). . . . . . . . . . .
4WD Reg Cab Short Box 63.8 inches (162.1 cm). .
4WD Reg Cab Long Box 65.4 inches (166.1 cm). .
4WD Extended Cab 63.8 inches (162.1 cm). . . . . .
4WD Crew Cab 67.6 inches (171.7 cm). . . . . . . . . .
Width67.9 inches (172.5 cm) . . . . . . . . . . . . . . . . . . Front Tread
2WD
0.0 Wheel Offset 54.5 inches (138.4 cm). . . . . . . . .
-6.4 Wheel Offset 55.0 inches (139.6 cm). . . . . . . .
4WD
15
-inch Tires 57.3 inches (145.4 cm). . . . . . . . . . . .
31 x 10.5 Tires 61.2 inches (155.4 cm). . . . . . . . . . .
Rear Tread
2WD 54.7 inches (138.8 cm). . . . . . . . . . . . . . . . . . . .
4WD
15
-inch Tires 55.1 inches (139.9 cm). . . . . . . . . . . .
31 x 10.5 Tires 59.1 inches (150.0 cm). . . . . . . . . . .
*Figures reflect base equipment only.

7-
7-1
Section 7 Maintenance Schedule
This section covers the maintenance required for your vehicle. Your vehicle needs these services to retain its safety,
dependability and emission control performance.
7
-2 Introduction
7
-4 Part A: Scheduled Maintenance Services
7
-6 Scheduled Maintenance
7
-8 Short Trip/City Scheduled Maintenance
7
-30 Long Trip/Highway Scheduled Maintenance7
-43 Part B: Owner Checks and Services
7
-48 Part C: Periodic Maintenance Inspections
7
-50 Part D: Recommended Fluids and Lubricants
7
-53 Part E: Maintenance Record

7-2
Have you purchased the GM Protection Plan? The Plan
supplements your new vehicle warranties. See your
Warranty and Owner Assistance booklet or your dealer
for details.
Introduction
Your Vehicle and the Environment
Proper vehicle maintenance not only helps to keep your
vehicle in good working condition, but also helps the
environment. All recommended maintenance procedures
are important. Improper vehicle maintenance can even
affect the quality of the air we breathe. Improper fluid
levels or the wrong tire inflation can increase the level
of emissions from your vehicle. To help protect our
environment, and to keep your vehicle in good
condition, please maintain your vehicle properly.
Maintenance Requirements
Maintenance intervals, checks, inspections and
recommended fluids and lubricants as prescribed in this
manual are necessary to keep your vehicle in good
working condition. Any damage caused by failure to
follow recommended maintenance may not be covered
by warranty.