engine CHEVROLET DURAMAX 2006 Manual PDF

Maintenance Footnotes
†The U.S. Environmental Protection Agency or the
California Air Resources Board has determined that the
failure to perform this maintenance item will not nullify
the emission warranty or limit recall liability prior to the
completion of the vehicle’s useful life. We, however,
urge that all recommended maintenance services be
performed at the indicated intervals and the maintenance
be recorded.
#Lubricate the front suspension, steering linkage,
transmission shift linkage (pickup models), rear driveline
center splines (van models), and parking brake cable
guides. Pickup models only: Control arm ball joints
require lubrication but should not be lubricated unless
their temperature is 10°F (-12°C) or higher, or they could
be damaged. Vehicles used under severe commercial
operating conditions require lubrication on a regular basis
every 3,000 miles (5 000 km).
(a)A uid loss in any vehicle system could indicate a
problem. Have the system inspected and repaired
and the uid level checked. Add uid if needed.
(b)If you drive regularly under dusty conditions, inspect
the lter or change indicator, if equipped, at each engine
oil change.(c)Visually inspect brake lines and hoses for proper
hook-up, binding, leaks, cracks, chang, etc. Inspect disc
brake pads for wear and rotors for surface condition.
Inspect drum brake linings/shoes for wear or cracks.
Inspect other brake parts, including drums, wheel
cylinders, calipers, parking brake, etc.
(d)Visually inspect front and rear suspension and
steering system for damaged, loose, or missing parts,
signs of wear or lack of lubrication. Inspect power
steering lines and hoses for proper hook-up, binding,
leaks, cracks, chang, etc. Pickup models: Visually
check constant velocity joints, rubber boots, and axle
seals for leaks.
(e)Visually inspect hoses and have them replaced if they
are cracked, swollen, or deteriorated. Inspect all pipes,
ttings, and clamps; replace with genuine GM parts as
needed. To help ensure proper operation, a pressure test
of the cooling system and pressure cap and cleaning the
outside of the radiator and air conditioning condenser is
recommended at least once a year.
(f)Visually inspect wiper blades for wear or cracking.
Replace wiper blades that appear worn or damaged
or that streak or miss areas of the windshield.
6-9
ProCarManuals.com

(n)Change clutch uid (or every 24 months, whichever
occurs rst).
(p)Change automatic transmission uid and external
transmission lter 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.
(q)Check vent hose at transfer case for kinks and
proper installation.
(r)Drain, ush, and rell cooling system. This service
can be complex; you should have your dealer perform
this service. See Engine Coolant on page 5-34 for
what to use. Inspect hoses. Clean radiator, condenser,
van model fuel operated heater (if equipped), pressure
cap, and ller neck. Pressure test the cooling system
and pressure cap. For van models, see Fuel Operated
Heater (FOH) (Van Models Only) on page 2-8.
(s)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
inRecommended Fluids and Lubricants on page 6-15.
At Each Fuel Fill
It is important to perform these underhood checks at
each fuel ll.
Engine Oil Level Check
Check the engine oil level and add the proper oil if
necessary. SeeEngine Oil on page 5-21for further
details.
Notice:It is important to check your oil regularly
and keep it at the proper level. Failure to keep your
engine oil at the proper level can cause damage
to your engine not covered by your warranty.
6-11
ProCarManuals.com

Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary.
SeeEngine Coolant on page 5-34for further details.
Windshield Washer Fluid Level Check
Check the windshield washer fluid level in the windshield
washer fluid reservoir and add the proper fluid if
necessary.
At Least Once a Month
Tire Ination Check
Visually inspect your vehicle’s tires and make sure they
are inflated to the correct pressures. Do not forget to
check the spare tire. See “Tires” in your owner manual
for further details. Check to make sure the spare tire
is stored securely. See “Changing a Flat Tire” in
your owner manual.
Tire Wear Inspection
Tire rotation may be required for high mileage highway
drivers prior to the Engine Oil Life System service
notification. Check the tires for wear and, if necessary,
rotate the tires. See “Tire Inspection and Rotation” in
your owner manual.
At Least Once a Year
Starter Switch Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle.
2. Firmly apply both the parking brake and the regular
brake. See “Parking Brake” in your owner manual.
Do not use the accelerator pedal, and be ready
to turn off the engine immediately if it starts.
3. Try to start the engine in each gear. The vehicle
should start only in PARK (P) or NEUTRAL (N).
If the vehicle starts in any other position, contact
your GM Goodwrench
®dealer for service.
6-12
ProCarManuals.com

Automatic Transmission Shift Lock
Control System Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle. It should be parked on a level
surface.
2. Firmly apply the parking brake. See “Parking Brake”
in your owner manual.
Be ready to apply the regular brake immediately if
the vehicle begins to move.3. With the engine off, turn the ignition to RUN, but do
not start the engine. Without applying the regular
brake, try to move the shift lever out of PARK (P)
with normal effort. If the shift lever moves out
of PARK (P), contact your GM Goodwrench
®
dealer for service.
Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn
the ignition to LOCK in each shift lever position.
•The ignition should turn to LOCK only when the
shift lever is in PARK (P).
•The key should come out only in LOCK.
Contact your GM Goodwrench
®dealer if service is
required.
6-13
ProCarManuals.com

Parking Brake and Automatic
Transmission Park (P) Mechanism Check
{CAUTION:
When you are doing this check, your vehicle
could begin to move. You or others could be
injured and property could be damaged. Make
sure there is room in front of your vehicle in
case it begins to roll. Be ready to apply the
regular brake at once should the vehicle begin
to move.Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular brake,
set the parking brake.
•To check the parking brake’s holding ability: With the
engine running and transmission in NEUTRAL (N),
slowly remove foot pressure from the regular brake
pedal. Do this until the vehicle is held by the parking
brake only.
•To check the PARK (P) mechanism’s holding
ability: With the engine running, shift to PARK (P).
Then release the parking brake followed by the
regular brake.
Contact your GM Goodwrench
®dealer if service is
required.
Underbody Flushing Service
At least every spring, use plain water to flush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other
debris can collect.
6-14
ProCarManuals.com

Recommended Fluids and
Lubricants
Fluids and lubricants identified below by name,
part number, or specification may be obtained from
your dealer.
Usage Fluid/Lubricant
Engine OilEngine oils with the letters CI-4 or
CH-4 are best for your vehicle.
The CI-4 or CH-4 designation
may appear either alone, or in
combination with other API
designations, such as API CI-4/SL.
These letters show American
Petroleum Institute (API) levels of
quality. GM Goodwrench
®oil meets
all the requirements for your vehicle.
To determine the preferred viscosity
for your vehicle’s diesel engine, see
Engine Oil on page 5-21.
Engine Coolant50/50 mixture of clean, drinkable
water and use only DEX-COOL
®
Coolant. SeeEngine Coolant on
page 5-34.
Hydraulic Brake
SystemDelco
®Supreme 11 Brake Fluid or
equivalent DOT-3 brake fluid.
Usage Fluid/Lubricant
Windshield
WasherGM Optikleen
®Washer Solvent.
Van Models:
Parking Brake
Cable GuidesChassis Lubricant
(GM Part No. U.S. 12377985, in
Canada 88901242) or lubricant
meeting requirements of NLGI #2,
Category LB or GC-LB.
Pickup Models:
Hydraulic
Clutch System
(5-Speed
Trans.)Hydraulic Clutch Fluid
(GM Part No. U.S. 12345347, in
Canada 10953517) or equivalent
DOT-3 brake fluid.
Pickup Models:
Hydraulic
Clutch System
(6-Speed
Trans.)Hydraulic Clutch Fluid. Use only
GM Part No. U.S. 88958860, in
Canada 88901244, Super DOT-4
brake fluid.
Power Steering
SystemGM Power Steering Fluid
(GM Part No. U.S. 89021184, in
Canada 89021186).
Pickup Models:
Manual
Transmission
(5-Speed
with Low Gear,
RPO MW3)GM Goodwrench
®Synthetic
Manual Transmission Fluid
(GM Part No. U.S. 12346190, in
Canada 10953477) or equivalent
SAE 75W-85 GL-4 gear oil.
6-15
ProCarManuals.com

Normal Maintenance Replacement Parts
Replacement parts identified below by name, part number, or specification can be obtained from your dealer.
Part GM Part Number ACDelco®Part Number
Oil Filter 88917036 PF2232
Engine Air Cleaner/Filter
Pickups Models
Van Models25332443
15102546A1618C
A2959C
Fuel Filter(s)
Pickup Models
Van Models (Primary and Secondary Filter Kit)97385488
19121764TP1298A
RK58095*
Use only the specified filters.
*Racor service kit includes primary filter, secondary filter and o-rings.
6-18
ProCarManuals.com

Engine Drive Belt Routing
6-19
ProCarManuals.com

A
Automatic Transmission, Fluid...........................5-29
C
Canadian Owners................................................ ii
Capacities and Specifications
Specification Charts.....................................5-50
Coolant
Engine.......................................................5-34
Surge Tank Pressure Cap.............................5-39
Cooling System..............................................5-41
D
Diesel
Engine Fuel.................................................. 5-2
Filling a Portable Fuel Container....................5-17
Filling Your Tank..........................................5-15Diesel (cont.)
Fuel Requirements and Fuel System................ 5-2
Running Out of Fuel....................................5-11
Very Cold Weather Operation.......................... 5-5
Water in Fuel............................................... 5-5
Water in Fuel Light Chart............................... 5-6
What Fuel to Use.......................................... 5-3
Driver Information Center (DIC).......................... 3-9
E
Engine
Air Cleaner/Filter.........................................5-25
Compartment Overview................................5-18
Coolant......................................................5-34
Oil .............................................................5-21
Overheating................................................5-39
Reduced Power Light.................................... 3-7
Engine Coolant Heater...................................... 2-8
1
ProCarManuals.com

F
Fuel
At Each Fuel Fill.........................................6-11
Diesel Engine............................................... 5-2
Diesel Requirements and Fuel System............. 5-2
Filling a Portable Fuel Container....................5-17
Filling Your Tank..........................................5-15
Filter Replacement.......................................5-12
Gage ........................................................... 3-8
Running Out of...........................................5-11
Water in Warning Light.................................. 3-9
What to Use ................................................. 5-3
Fuel Operated Heater (FOH).............................. 2-8
G
Gage
Fuel............................................................ 3-8
Oil Pressure................................................. 3-6
I
Instrument Panel Cluster................................... 3-2
L
Light
Reduced Engine Power.................................. 3-7
Water in Fuel Warning................................... 3-9
Lights
Malfunction Indicator Lamp............................. 3-4
Wait to Start................................................. 3-7
Water in Fuel Light Chart............................... 5-6
2
ProCarManuals.com