Page 322 of 410

Capacities and Specifications
Engine Description ............ “VORTEC” 4300
Type .................................... V6
VINCode ................................. W
Firing Order ...................... 1-6-5-4-3-2
Horsepower
................... 190 at 4,400 rpm
Thermostat Specification ........... I95 OF (9 I “C)
Spark Plug Gap .......... 0.045 inches (0. I 14 cm)
Wheels and Tires
Wheel Nut Torque ............ 95 lb-ft ( 130 N-m)
Tire Pressure ...... See the Certification/Tire label.
See ”Loading Your
Vehicle”
in the Index.
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 truck dealer.
Thermostat
......................... 12551472
Oil Filter.. ............................. PF52
Air Cleaner Filter
...................... A 1 163C
PCV Valve
.......................... CV746C
Automatic Transmission Filter
Kit ...... 24200796
Spark Plugs
........................... 4 1-932
Fuel Filter. ............................ GF481
Front Windshield
Wiper Blade
.......... Trico (20 inchedS0.8 cm)
Backglass Wiper Blade
... Trico (14 inched35.6 cm)
6-63
Page 323 of 410

Capacities (Approximate)
Cooling System"
Automatic Trans.
............ 1 1.7 quarts (
Manual Trans. .............. 1 1.9 quarts (
Crankcase"' ......... . . 4.5 quarts
Automatic Transmission
11.1 L)
1 I .3 L)
(4.3 L)
. . 5.0 quarts (4.7 L) (Drain and Refill)* .......
Differential Fluid
Rear ........................ 4.0 pints ( I .9 L)
Front ....................... 2.6 pints ( 1.2 L)
Fuel Tank ..................... IC) gallons (72 L)
A/C Refrigerant . . 30 oz. or 2 Ibs. (0.9 kg) of R- 1341
:%After refill. the level Inust be checked.
Air Conditioning Refrigerants
Not all air conditioning refrigerants are the same. If the
air conditioning system in your vehicle needs
refrigerant,
be sure the proper refrigerant is used. If
you're not sure, ask your GM dealer.
Vehicle Dimensions*
Wheelbase
S/TlOSIb
.............. 100.5 inches (255.3 cm)
S/T10506 .............. 107.0 inches (27 I .8 crn)
Length
S 105 I6 ............... 175.0 inches (444.5 cm)
TI0516 ............... 175.4 inches (445.5 cm)
S/T 1 OS06 .............. 18 1 .S inches (46 1 .O cm)
SI0516 .... ........ 66.0 inches (167.6 cm)
T 1 OS 16 ................ 66.9 inches ( 170.0 cm)
SI0506 ................ 65.9 inches (167.4 cm)
TI0506
................ 67.0 inches (170.2 cm)
Width ................... 67.8 inches (172.2 cm)
Front Tread
S Series ................ 55.0 inches ( 139.6 cm)
T Series ................ 57.3 inches (145.4 cm)
S Series ................ 54.7 inches ( 138.8 an)
T Series ................ 55.1 inches (139.9 cm)
Height
Rear Tread
'%Figures retlect base equipment only.
6-64
Page 328 of 410

Maintenance Schedule
Short TripKity Definition
Follow the Short Trip/City Maintenance Schedule if any
one
of' these conditions is true for your
ehick:
0 Most trips are less than 5 to 10 miles (8 to 16 km).
This is particularly important when outside
temperatures are below freezing.
driving
in stop-and-go traffic).
off-road frequently.
your vehicle.
or other comnwcial application.
0 Most trips include extensive idling (such as frequent
0 You operate your vehicle in dusty areas or
0 You I-'recluently tow a trailer or use a carrier on top of
0 If the vehicle is used for delivery service, police, taxi
OII~? of'the 1-ec1,son.s !*OLL .sho~rl~l,fi,ll~~t~~ this .sc*Iwdulc~ if you
optute !mrr \vl?ic*le L~OI- elq* of' thesc c-oditiorzs is tlwt
those cwclitior1.v
(YILIS~ e~lgiw oil to h~wk lloc
SOOIIOK
Short Trip/City Intervals
Every 3,000 Miles (5 000 km): Engine Oil and Filter
Change
(or 3 months, whichever occurs first). Chassis
Lubrication (or
3 months. whichever occurs first). Drive
Axle Service (or 3 months, whichever occurs first).
Short TripKity Intervals
Every 6,000 Miles (10 000 km): Tire Rotation.
Every 15,000 Miles (25 000 km): Air Cleaner Filter
Inspection.
if' driving in dusty conditions. Front
Wheel Bearing Repack (2WD only) (or at each brake
relining, whichever occurs
first).
Every 30,000 Miles (50 000 km): Air Cleaner Filter
Replacement. Fuel Filter Replacement.
Every 50,000 Miles (83 000 km): Automatic
Transmission Service (severe conditions only).
Every 60,000 Miles (100 000 km): Engine
Accessory Drive Belt Inspection. Fuel Tank, Cap
and Lines Inspection.
Every 100,000 Miles (166 000 km): Spark Plug Wire
Inspection. Spark Plug Replacement. Positive
Crankcase Ventilation (PCV
j Valve Inspection.
Every 150,000 Miles (240 000 km): Cooling System
Service (or every
60 months. whichever occ~lrs first).
Thc>,vt> if?ter~ul.s o~l~- .swwncrri:o 1uc1intemtlce ser\!ic:t>s.
He ,s11t-~3 to folloct- the c-omplote mrlirztencrnc'cJ .sc*he,dult?
on tl~~~.~~)ll~)~~,i~l~~ pclgr.s.
7-5
Page 329 of 410

Maintenance Schedule
I Long Trip/Hiahway Definition
Follow this maintenance schedule only if none of the
conditions from the Short Trip/City Maintenance
Schedule
is true. Do not use this schedule if the vehicle
is used
for trailer towing, driven in a dusty area or used
off paved roads. Use the Short Trip/City schedule for
these conditions.
Lone TridHiehwav Intervals
Every 7,500 Miles (12 500 km): Engine Oil and Filter
Change (or every
12 months, whichever C)CCLI~S first).
Chassis Lubrication (or every
I2 months, whichever
occ~~rs first). Drive Axle Service. Tire Rotation.
Every 30,000 Miles (50 000 km): Fuel Filter
Replacement.
Air Cleaner Filter Replacement. Front
Wheel Bearing Repack (2WD only) (or at each brake
relining, whichever occurs first).
Transmission Service (severe conditions only).
Drive Belt Inspection. Fuel
Tank, Cap and
Lines Inspection.
Inspection. Spark Plug Replacement. Positive
Crankcase Ventilation (PCV) Valve Inspection.
Every 150,000 Miles (240 000 km): Cooling System
Service
(or every 60 months. whichever occurs first).
Every 50,000 NIiles (83 000 km): Automatic
Every 60,000 Miles (100 000 km): Engine Accessory
Every 100,000 Miles (166 000 km): Spark Plug Wire
7-6
Page 340 of 410
Short TripKity Maintenance Schedule
48,000 Miles (80 000 km)
0 Change engine oil and filter (or every
3 months. whichever occurs first).
An Emixxio~/ Corltd ScJr\,ic*c..
El Lubricate chassis components (or every
3 months, whichever occurs first).
(See footnote
#.)
0 Check rear/f~-ont axle fluid level and add
fluid as needed. Check constant velocity
joints and axle seals for leaking.
(See footnote
-I*-:*.)
0 Rotate tires. See "Tire Inspection and
Rotation"
in the Index for proper rotation
pattern and additional information.
(See footnote
+.)
.. .,
DATE SERVICED BY ACTUAI, MILEAGE
50,000 Miles (83 000 km)
c] Change automatic transmission fluid and
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) 01- higher.
- In hilly or mountainous terrain.
- When doing frequent trailer towing.
- Uses such as found in taxi. police or
delivery service.
(Continued)
Page 351 of 410
I Short TripKity Maintenance Schedule I
99,OP‘ “fles (165 000 km)
0 Change engine oil and filter (or every
3 months, whichever occurs first).
AH Emissiotl Control Sc-’t*vic*c-’.
0 Lubricate chassis components (or every
3 months, whichever occurs first).
(See footnote
#.)
0 Check readfront axle fluid level and add
fluid as needed. Check constant velocity
joints and axle seals for leaking.
(See footnote
‘Y)
DATE SERVICED BY ACTUAL MILEAGE
100,000 Miles (1 66 000 kin)
0 Inspect spark plug wires.
AI] E1uissiorl Cmd Sewic*o.
0 Replace spark plugs.
0 Change automatic transmission fluid and
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 O F
(32°C) or higher.
Au Emissio~~ Co~1trol Serl7ic-e.
- In hilly or mountainous terrain.
7-28
Page 360 of 410
I Long Tripmighway Maintenance Schedule I
50,000 Miles (83 000 km)
0 Change automatic transmission fluid and
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 O 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.
If you do not use your vehicle under any of
these conditions, the fluid and filter do not
require changing.
Manual transmission fluid doesn't
require change.
DATE ACTUAL MILEAGE SERVICED BY
7-37
Page 367 of 410
I Long Tripmighway Maintenance Schedule
97,500 Miles (162 500 km)
0 Change engine oil and filter (or every
12 months, whichever occurs first).
0 Lubricate chassis components (or every
I2 montl1s, whichever occurs first).
(See footnote
#.)
0 Check readfront axle fluid level and add
fluid
as needed. Check constant velocity
joints
and axle seals for leaking.
(See fiwtnote
’?)
0 Rotate tires. See “Tire Inspection and
Rotation”
in the Index for proper rotation
pattern
and additional inforrnation.
(See footnote
+.)
AH E111issio/l Control Sol-~~ic.o.
DATE SI
100,000 Miles (166 000 km)
Change automatic transmission fluid and
fi1te.r
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
(32OC) or higher.
- In hilly or nlountainous terrain.
- When doing frequent trailer towing.
- Uses such as found in taxi, police or
delivery service.
7-44