check engine CHEVROLET TAHOE 2006 2.G Workshop Manual

(c)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.
(d)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.
(e)Make sure the safety belt reminder light and all your
belts, buckles, latch plates, retractors, and anchorages
are working properly. Look for any other loose or
damaged safety belt system parts. If you see anything
that might keep a safety belt system from doing its
job, have it repaired. Have any torn or frayed safety belts
replaced. Also look for any opened or broken airbag
coverings, and have them repaired or replaced.
The airbag system does not need regular maintenance.
(f)Lubricate all key lock cylinders, hood latch
assembly, secondary latch, pivots, spring anchor,
release pawl, rear compartment hinges, outer liftgate
handle pivot points, rear door detent link, roller
mechanism, liftgate handle pivot points, latch bolt, fuel
door hinge, cargo door hinge, locks, and folding
seat hardware. More frequent lubrication may be
required when exposed to a corrosive environment.Applying silicone grease on weatherstrips with a clean
cloth will make them last longer, seal better, and
not stick or squeak.
(g)Check vent hose at transfer case for kinks and
proper installation.
(h)Change automatic transmission uid and 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.
(i)Drain, ush, and rell cooling system. This service
can be complex; you should have your dealer perform
this service. See Engine Coolant on page 5-25 for
what to use. Inspect hoses. Clean radiator, condenser,
pressure cap, and ller neck. Pressure test the
cooling system and pressure cap.
(j)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.
6-8

(k)Inspect system. Check all fuel and vapor lines and
hoses for proper hook-up, routing, and condition. Check
that the purge valve works properly, if equipped.
Replace as needed.
(l)If you drive regularly under dusty conditions, inspect
the lter at each engine oil change.
(m)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 specied 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 uids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
inRecommended Fluids and Lubricants on page 6-12.
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 5-15for 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.
Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary. SeeEngine
Coolant on page 5-25for further details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in the windshield
washer uid reservoir and add the proper uid if
necessary.
6-9

At Least Once a Month
Tire Ination Check
Visually inspect your vehicle’s tires and make sure they
are inated to the correct pressures. Do not forget to
check the spare tire. SeeTires on page 5-59for further
details. Check to make sure the spare tire is stored
securely. SeeChanging a Flat Tire on page 5-79.
Tire Wear Inspection
Tire rotation may be required for high mileage highway
drivers prior to the Engine Oil Life System service
notication. Check the tires for wear and, if necessary,
rotate the tires. SeeTire Inspection and Rotation on
page 5-70.
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. SeeParking Brake on page 2-32.
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.
6-10

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. SeeParking Brake
on page 2-32.
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.
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.
6-11

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 ush any
corrosive materials from the underbody. Take care
to clean thoroughly any areas where mud and other
debris can collect.
Recommended Fluids and
Lubricants
Fluids and lubricants identied below by name, part
number, or specication may be obtained from
your dealer.
Usage Fluid/Lubricant
Engine OilEngine oil which meets GM
Standard GM6094M and displays
the American Petroleum Institute
Certied for Gasoline Engines
starburst symbol. GM Goodwrench
®
oil meets all the requirements for
your vehicle. To determine the
proper viscosity for your vehicle’s
engine, seeEngine Oil on
page 5-15.
Engine Coolant50/50 mixture of clean, drinkable
water and use only DEX-COOL
®
Coolant. SeeEngine Coolant on
page 5-25.
Hydraulic Brake
SystemDelco
®Supreme 11 Brake Fluid or
equivalent DOT-3 brake uid.
Windshield
WasherGM Optikleen
®Washer Solvent.
Power Steering
SystemGM Power Steering Fluid
(GM Part No. U.S. 89021184,
in Canada 89021186).
6-12

Bulb Replacement (cont.)
Side Identication Marker Lamps...................5-54
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps........................................5-56
Buying New Tires...........................................5-72
C
California Fuel.................................................. 5-5
California Proposition 65 Warning....................... 5-3
Canadian Owners................................................ ii
Capacities and Specications..........................5-118
Carbon Monoxide...................2-13, 2-36, 4-42, 4-62
Care of
Safety Belts..............................................5-102
Your Cassette Tape Player..........................3-131
Your CD and DVD Player...........................3-133
Your CDs and DVDs ..................................3-132
Cargo Cover..................................................2-58
Center Console Storage Area...........................2-56
Center Passenger Position, Safety Belts.............1-41
Chains, Tire...................................................5-77
Check
Engine Light...............................................3-45
Checking Things Under the Hood......................5-10
Chemical Paint Spotting.................................5-106Child Restraints
Child Restraint Systems...............................1-54
Infants and Young Children...........................1-51
Lower Anchors and Tethers for Children..........1-59
Older Children.............................................1-48
Securing a Child Restraint in a Rear
Outside Seat Position...............................1-66
Securing a Child Restraint in the Center
Front Seat Position...................................1-70
Securing a Child Restraint in the Center
Rear Seat Position...................................1-68
Securing a Child Restraint in the Right
Front Seat Position...................................1-70
Where to Put the Restraint...........................1-58
Chime Level Adjustment.................................3-133
Cigarette Lighter.............................................3-21
Cleaning
Aluminum or Chrome-Plated Wheels.............5-105
Exterior Lamps/Lenses................................5-103
Fabric/Carpet............................................5-101
Finish Care...............................................5-103
Inside of Your Vehicle..................................5-99
Instrument Panel, Vinyl, and Other Plastic
Surfaces...............................................5-102
Leather....................................................5-101
Tires........................................................5-106
3

Door
Delayed Locking..........................................2-10
Locks.......................................................... 2-8
Power Door Locks......................................... 2-9
Programmable Automatic Door Locks.............2-10
Rear Door Security Locks.............................2-12
Driver
Position, Safety Belt.....................................1-34
Driver Information Center (DIC).........................3-51
DIC Operation and Displays..........................3-52
DIC Vehicle Customization............................3-66
DIC Warnings and Messages........................3-55
Driving
At Night.....................................................4-32
City ...........................................................4-36
Defensive..................................................... 4-2
Drunken....................................................... 4-3
Freeway.....................................................4-37
Hill and Mountain Roads..............................4-40
In Rain and on Wet Roads...........................4-34
Off-Road ....................................................4-17
Recovery Hooks..........................................4-47
Rocking Your Vehicle to Get it Out.................4-46
Winter........................................................4-42Dual Automatic Climate Control System.............3-25
Dual Climate Control System............................3-22
DVD
Rear Seat Entertainment System..................3-117
E
Electrical System
Add-On Equipment.....................................5-109
Center Instrument Panel Fuse Block.............5-112
Fuses and Circuit Breakers.........................5-109
Instrument Panel Fuse Block.......................5-110
Power Windows and Other Power Options....5-109
Underhood Fuse Block...............................5-113
Windshield Wiper Fuses.............................5-109
Engine
Air Cleaner/Filter.........................................5-20
Battery.......................................................5-41
Check and Service Engine Soon Light............3-45
Coolant......................................................5-25
Coolant Heater............................................2-22
Coolant Temperature Gage...........................3-42
Drive Belt Routing.......................................6-15
5

G
Gage
Engine Coolant Temperature.........................3-42
Fuel..........................................................3-50
Oil Pressure...............................................3-48
Speedometer..............................................3-36
Tachometer.................................................3-36
Transmission Temperature.............................3-43
Voltmeter Gage...........................................3-40
Garage Door Opener.......................................2-52
Gasoline
Octane........................................................ 5-5
Specications............................................... 5-5
Glove Box.....................................................2-56
GM Mobility Reimbursement Program.................. 7-6
H
Hazard Warning Flashers................................... 3-5
Head Restraints............................................... 1-8
Headlamps............................................3-14, 5-51
Automatic Headlamp System.........................3-16
Bulb Replacement.......................................5-51
Daytime Running Lamps...............................3-15Headlamps (cont.)
Flash-to-Pass............................................... 3-9
Front Turn Signal, Sidemarker and Daytime
Running Lamps........................................5-52
Halogen Bulbs............................................5-51
High/Low Beam Changer................................ 3-8
On Reminder..............................................3-15
Roof Marker Lamps.....................................5-54
Side Identication Marker Lamps...................5-54
Heated Seats................................................... 1-4
Heater...................................................3-21, 3-22
Heater...........................................................3-25
Highbeam On Light.........................................3-49
Highway Hypnosis...........................................4-39
Hill and Mountain Roads..................................4-40
Hood
Checking Things Under................................5-10
Release.....................................................5-11
Horn ............................................................... 3-6
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-34
7

Mirrors (cont.)
Automatic Dimming Rearview with OnStar®
and Compass..........................................2-37
Automatic Dimming Rearview with OnStar®,
Compass and Temperature Display.............2-39
Manual Rearview Mirror................................2-37
Outside Automatic Dimming Mirror.................2-48
Outside Camper-Type Mirrors........................2-46
Outside Convex Mirror.................................2-49
Outside Curb View Assist Mirrors...................2-49
Outside Heated Mirrors................................2-49
Outside Manual Mirrors................................2-46
Outside Power Foldaway Mirrors....................2-48
Outside Power Mirrors..................................2-47
MyGMLink.com................................................ 7-4
N
Navigation/Radio System, see Navigation
Manual.....................................................3-117
New Vehicle Break-In......................................2-18
Normal Maintenance Replacement Parts............6-14
O
Odometer......................................................3-36
Odometer, Trip...............................................3-36
Off-Road Driving.............................................4-17
Off-Road Recovery..........................................4-14
Oil
Engine.......................................................5-15
Pressure Gage............................................3-48
Oil, Engine Oil Life System..............................5-18
Older Children, Restraints................................1-48
Online Owner Center........................................ 7-4
OnStar
®System, see OnStar®Manual...............2-50
Other Warning Devices...................................... 3-6
Outlet Adjustment............................................3-30
Outlet(s), Accessory Power...............................3-20
Outside
Automatic Dimming Mirror.............................2-48
Camper-Type Mirrors....................................2-46
Convex Mirror.............................................2-49
Curb View Assist Mirrors..............................2-49
Heated Mirrors............................................2-49
Manual Mirrors............................................2-46
Power Foldaway Mirrors...............................2-48
Power Mirrors.............................................2-47
Overheated Engine Protection Operating Mode.....5-30
Owner Checks and Services.............................. 6-9
Owners, Canadian............................................... ii
10

Rear Air Conditioning and Heating System.........3-31
Rear Air Conditioning and Heating System
and Electronic Climate Controls.....................3-32
Rear Axle......................................................5-47
Locking........................................................ 4-8
Rear Door Security Locks................................2-12
Rear Outside Passenger Positions,
Safety Belts................................................1-43
Rear Safety Belt Comfort Guides......................1-45
Rear Seat Audio (RSA)..................................3-128
Rear Seat Entertainment System.....................3-117
Rear Seat Operation......................................... 1-9
Rear Storage Area..........................................2-57
Rear Windshield Washer/Wiper.........................3-10
Rearview Mirror, Automatic Dimming with
Compass....................................................2-42
Rearview Mirror, Automatic Dimming with
Compass and Temperature Display................2-43
Rearview Mirror, Automatic Dimming with
OnStar
®and Compass.................................2-37
Rearview Mirror, Automatic Dimming with
OnStar
®, Compass and Temperature Display.....2-39
Rearview Mirrors.............................................2-37
Reclining Seatbacks.......................................... 1-5Recommended Fluids and Lubricants.................6-12
Recovery Hooks.............................................4-47
Recreational Vehicle Towing.............................4-58
Remote Keyless Entry System............................ 2-4
Remote Keyless Entry System, Operation............ 2-5
Removing the Flat Tire and Installing the
Spare Tire..................................................5-84
Removing the Spare Tire and Tools...................5-80
Replacement Bulbs.........................................5-57
Reporting Safety Defects
Canadian Government..................................7-14
General Motors...........................................7-15
United States Government............................7-14
Restraint System Check
Checking the Restraint Systems....................1-87
Replacing Restraint System Parts
After a Crash..........................................1-88
Retained Accessory Power (RAP)......................2-20
Right Front Passenger Position, Safety Belts......1-41
Roadside
Assistance Program....................................... 7-6
Rocking Your Vehicle to Get it Out....................4-46
Routing, Engine Drive Belt...............................6-15
Running the Engine While Parked.....................2-36
12