Page 278 of 488
While  refueling, hang 
the cap  inside  the  fuel 
door. 
To take off the  cap,  turn it slowly to the left  (counterclockwise). 
-~ 
A CAUTION: 
If you  get  gasoline  on  yourself  and then something ignites  it, you 
could  be badly burned.  Gasoline can spray  out on  you  if  you 
1 open the  fuel filler cap  too  quickly.  This spray  can happen  if 
your  tank is nearly  full, and 
is more  likely  in  hot weather.  Open 
the 
fuel filler  cap slowly  and wait for any “hiss” noise to stop. 
Then  unscrew  the cap all the  way. 
Be careful not to spill gasoline. Clean gasoline from painted  surfaces  as 
soon as possible. See “Cleaning the Outside  of  Your Vehicle” in the Index. 
When 
you put the  cap back on, turn it to the right until you hear a clicking 
noise. 
1 NOTICE: 
If you  need a new cap,  be sure t.0 get  the right  type.  Your  dealer 
can  get  one  for you. 
If you  get  the wrong  type, it may  not fit or 
have  proper  venting,  and your  fuel tank  and emissions  system 
might  be  damaged. 
6- 12 
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        Page 305 of 488
Radiator  Pressure Cap - Gasoline Engine 
The radiator  pressure 
cap  must  be tightly 
installed  with 
the 
arrows  on  the  cap 
lined  up  with the 
overflow  tube  on  the 
radiator  filler  neck. 
NOTICE: 
Your  radiator  cap  is a 15 psi (105 kPa)  pressure-type  cap  and 
must  be  tightly  installed  to  prevent  coolant  loss  and  possible \
engine  damage  from  overheating.  Be  sure  the  arrows 
on the  cap 
line  up  with  the  overflow  tube  on  the  radiator  filler neck. 
Surge  Tank  Pressure  Cap - Diesel  Engine 
The  surge  tank 
pressure  cap  must  be 
tightly  installed  with 
the  arrows  on  the  cap 
lined  up with  the  top 
tube  of the  coolant 
surge  tank. 
6-39 
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        Page 347 of 488
Engine Identification - Gasoline  Engines 
Engine 
Type 
VIN  Code 
Fuel System 
Emissions 
5.0L 
V8 
H 
TBI?  LD 
"Light  Duty  Emissions  with 
8,500 lbs. (3 850 Kg) GVWR  and below. 
**Heavy  Duty Emissions over 8,500 lbs. (3 850 Kg) GVWR. 
?Throttle  Body Injection 
Engine Identification - Gasoline  Engines (cont.) 
Engine 
Type 
VIN  Code 
Fuel  System 
Emissions 7.4L 
V8 
N 
TBI? 
LD*/HD** 
"Light  Duty  Emissions with 8,500 lbs. (3 850 Kg) GVWR and below. 
""Heavy  Duty Emissions  over 
8,500 lbs. (3 850 Kg) GVWR. 
?Throttle  Body  Injection 
Engine Identification - Diesel  Engines 
Engine 
Type 
VIN Code 
Fuel System 
6.5L 
V8 
P 
Diesel 
6.5L 
V8 S 
Turbo  Diesel 
6.5L 
V8 
F 
Turbo Diesel 
6-81 
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        Page 349 of 488
CranKcase  Capacity 
ENGINE 
4.3L 5  .OL 
5.7L“ 
6.5L 
6.5L 
6.5L 
7.4L>$ 
VIN 
Z 
€4 
K 
P 
S 
F 
N 
QUANTITY WITH 
FILTER* 
4.5 Quarts  (4.3  Liters) 
5 Quarts (4.8 Liters) 
5  Quarts  (4.8  Liters) 
7 Quarts (6.5  Liters) 
7  Quarts 
(6.5 Liters) 
7 Quarts  (6.5 Liters) 
7  Quarts  (6.5  Liters) 
After refill, the  level 
MUST be checked  as outlined  under “Engine  Oil  And 
Filter Recommendations” 
in Section 5. 
All  quantities  are approximate. 
“Add  one  additional quart  for 
C3500 HD Models. 
+Oil filter should  be changed  at EVERY oil change. 
Fuel  Tank  Capacity 
TYPE 
Gasoline/Diesel 
with  Short  Bed 
with  Long  Bed 
Crew  Cab 
Standard 
Chassis-Cab  Models 
Standard  (Side Tank) 
Optional  (Rear Tank) 
3500 HD Models 
Standard  (Side Tank) 
Optional  (Rear Tank) 
QUANTITY 
26 Gallons  (98  Liters) 
34 Gallons 
(1 28  Liters) 
34 Gallons 
(1 28 Liters) 
23  Gallons  (87  Liters) 
3 
1 Gallons (1 17 Liters) 
23 Gallons  (87  Liters) 
3 1 Gallons ( 117 Liters) 
All  quantities  are 
for a completely dry tank  and are approximate. 
6-83 
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        Page 350 of 488
Service  Replacement  Part  and  Filter 
Recommendations 
- Gasoline  Engines 
Engine 4.3L 
VTN Z 
Oil Filter  PFS2 
Air  Cleaner 
A 178CW 
Filter 
PCV  Valve  CV789C 
Spark 
Plugs* .CR43TS 
Fuel Filter  GF48 
1 
Radiator  Cap 
RC36 
5.0L 
H 
PF12183- 
A348C 
cv774c 
.CR43TS 
GF48 
1 
RC36 
5.7L 
K 
PF1218q A348C 
cv774c 
.CR43TS  GF38 
1 
RC36 
+Four  Wheel  Drive  Vehicle 
- use a PFS2  oil filter 
Wse AC  copper-cored  resistor type spark plugs 
Service  Replacement  Part  and  Filter 
Recommendations 
- Diesel  Engines 
Engine 6.5L 6.5L 
VIN P S 
Oil Filter  PF1218 
PF1218 
Air  Cleaner  A644C 
A 1236C 
Fuel  Filter  TP 
1006  TP 
1 006 
Surge 
Tank Cap  RC33  RC33 
7.41 
N 
PF1218 
A348C 
cv774c 
.CR43TS  GF48 
I 
RC36 
6.51 
F 
PF1218 
A 1236C 
TP 
I006 
RC33 
6-84 
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        Page 360 of 488

If your engine has more  than one  emissions  classification, the classification 
is determined by the Gross  Vehicle  Weight  Rating  (GVWR) of your  vehicle 
as shown  on  the Certification  Label.  See “Loading  Your  Vehicle” 
in the 
Index. 
Once  you’ve determined your  engine type and, 
if necessary, emissions 
classification,  you’ll need to  decide which  of  the  two schedules  is  right  for 
your vehicle.  See Definitions  for Maintenance  Schedule 
I and Maintenance 
Schedule 
I1 following. 
Schedule  I Definition - Gasoline  Engines  With  Light  Duty 
Emissions 
Follow Maintenance  Schedule I if any  one of these  is true for your vehicle: 
iII Most  trips are  less than 5 to 10 miles (8 to 16 km). This  is particularly 
important  when outside temperatures  are  below freezing. 
0 Most trips include  extensive idling (such as frequent driving in 
stop-and-go  traffic). 
You operate your vehicle in dusty  areas  or off-road  frequently. 
0 You frequently  tow a trailer. 
Schedule 
I should also be  followed if the  vehicle  is  used  for  delivery 
service,  police, taxi, or other commercial  application. 
Schedule I Intervals - Gasoline  Engines  With  Light  Duty 
Emissions 
Every 
3,000 Miles (5 000 km) or 3 Months,  Whichever Occurs First 
Engine Oil and Filter  Change 
Chassis  Lubrication 
Drive Axle Service 
At 6,000 Miles (10 000 km) - Then  Every 12,000 Miles (25 000 km) 
Tire  Rotation 
Every 75,000 Miles (25 000 km) 
Air Cleaner Filter Inspection, if driving in dusty  conditions 
Front Wheel Bearing Repack 
(or at each brake  relining)  (2WD  Only) 
7-4 
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