2007 GMC SIERRA CLASSIC check engine

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 (Gasoline Engine)
on page 486for 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. See
Engine Coolant on page 502for 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.
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. SeeInation - Tire
Pressure on page 551. Check to make sure the
spare tire is stored securely. SeeChanging a Flat
Tire on page 564.
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 553.
626

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 169.
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.
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 169.
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.
627

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
This maintenance section applies to vehicles with
a gasoline engine. If your vehicle has a diesel
engine, see the maintenance schedule section in
the DURAMAX
®Diesel Engine Supplement.
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 (Gasoline Engine) on page 486.
Engine Coolant50/50 mixture of clean, drinkable
water and use only DEX-COOL
®
coolant. SeeEngine Coolant on
page 502.
629

Bulb Replacement (cont.)
Headlamps............................................... 533
License Plate Lamps................................ 541
Pickup Box Identication and Fender
Marker Lamps...................................... 538
Replacement Bulbs.................................. 541
Roof Marker Lamps................................. 535
Taillamps, Turn Signal, Stoplamps
and Back-up Lamps.............................. 539
Buying New Tires........................................ 556
C
Calibration..........................................176, 180
California Fuel............................................. 471
California Proposition 65 Warning................ 469
Canadian Owners........................................... 3
Capacities and Specications...................... 609
Carbon Monoxide..............127, 174, 402, 429
Care of
Safety Belts............................................. 592
Your Cassette Tape Player....................... 350
Your CD and DVD Player........................ 352
Your CDs and DVDs................................ 352
Cargo Lamp................................................ 228
Center Console Storage Area...................... 202Center Front Passenger Position,
Safety Belts............................................... 37
Center High-Mounted Stoplamp
(CHMSL) and Cargo Lamp...................... 537
Chains, Tire................................................. 562
Check
Engine Light............................................ 258
Checking Things Under the Hood ................ 478
Chemical Paint Spotting .............................. 596
Child Restraints
Child Restraint Systems............................. 51
Infants and Young Children........................ 47
Lower Anchors and Tethers
for Children............................................ 58
Older Children........................................... 44
Securing a Child Restraint in a
Rear Seat Position................................. 71
Securing a Child Restraint in the
Center Front Seat Position..................... 74
Securing a Child Restraint in the Right
Front Seat Position (Crew Cab).............. 74
Securing a Child Restraint in the Right
Front Seat Position (Regular and
Extended Cab)................................ 78, 85
Where to Put the Restraint........................ 55
Chime Level Adjustment .............................. 353
661

Engine (cont.)
Check and Service Engine Soon Light..... 258
Coolant.................................................... 502
Coolant Heater......................................... 139
Coolant Temperature Gage...................... 256
Drive Belt Routing.................................... 633
Engine Compartment Overview................ 480
Exhaust................................................... 174
Fan Noise................................................ 514
Oil ........................................................... 486
Oil Life System........................................ 489
Overheated Protection Operating Mode.... 508
Overheating............................................. 505
Starting.................................................... 137
Entry Lighting.............................................. 227
Event Data Recorders (EDR)...................... 650
Exit Lighting................................................ 227
Extender, Safety Belt..................................... 43
F
Filter
Engine Air Cleaner................................... 491
Finish Damage............................................ 596
Fixed Mast Antenna.................................... 353
Flashers, Hazard Warning........................... 212Flash-to-Pass.............................................. 216
Flat Tire...................................................... 563
Flat Tire, Changing...................................... 564
Flat Tire, Storing......................................... 584
Fluid
Automatic Transmission...................494, 497
Manual Transmission................................ 500
Power Steering........................................ 515
Windshield Washer.................................. 516
Fog Lamps.................................................. 225
Four-Wheel Drive...............................153, 528
Four-Wheel-Drive Light................................ 263
Front Axle................................................... 529
Front Reading Lamps.................................. 227
Front Storage Area...................................... 202
Fuel............................................................ 470
Additives.................................................. 472
California Fuel.......................................... 471
E85 (85% Ethanol)................................... 473
Filling a Portable Fuel Container.............. 477
Filling Your Tank...................................... 474
Fuels in Foreign Countries....................... 474
Gage....................................................... 264
Gasoline Octane...................................... 470
Gasoline Specications............................ 471
Low Warning Light................................... 265
664

Fuses
Center Instrument Panel Fuse Block........ 602
Fuses and Circuit Breakers...................... 600
Instrument Panel Fuse Block................... 600
Underhood Fuse Block............................. 603
Windshield Wiper..................................... 599
G
Gage
Engine Coolant Temperature.................... 256
Fuel......................................................... 264
Oil Pressure............................................. 262
Speedometer........................................... 246
Tachometer.............................................. 246
Transmission Temperature........................ 257
Voltmeter Gage........................................ 253
Garage Door Opener..........................191, 192
Gasoline
Octane..................................................... 470
Specications........................................... 471
Glove Box................................................... 202
GM Mobility Reimbursement Program.......... 643
H
Hazard Warning Flashers............................ 212
Head Restraints............................................ 18
Headlamps.........................................221, 533
Automatic Headlamp System.................... 223
Bulb Replacement.................................... 532
Daytime Running Lamps.......................... 222
Flash-to-Pass........................................... 216
Front Turn Signal, Sidemarker and
Daytime Running Lamps....................... 534
Halogen Bulbs......................................... 532
High/Low Beam Changer......................... 215
On Reminder........................................... 222
Pickup Box Identication and Fender
Marker Lamps...................................... 538
Roof Marker Lamps................................. 535
Heated Seats................................................ 11
Heater................................................230, 231
Heater......................................................... 235
Highbeam On Light..................................... 263
Highway Hypnosis....................................... 399
Hill and Mountain Roads............................. 400
Hood
Checking Things Under............................ 478
Release................................................... 479
665

Overheated Engine Protection
Operating Mode....................................... 508
Owner Checks and Services....................... 625
Owners, Canadian.......................................... 3
P
Paint, Damage............................................ 596
Park (P)
Shifting Into............................................. 170
Shifting Out of......................................... 172
Parking
Brake....................................................... 169
Over Things That Burn............................ 173
Passenger Airbag Status Indicator............... 250
Passenger Sensing System......................... 103
Passing....................................................... 369
Passlock
®.................................................... 133
Pickup Conversion to Chassis Cab.............. 423
Power
Accessory Outlet(s).................................. 228
Door Locks.............................................. 121
Electrical System..................................... 599
Lumbar Controls........................................ 11
Retained Accessory (RAP)....................... 137
Seat.......................................................... 10Power (cont.)
Steering Fluid.......................................... 515
Windows.................................................. 130
Programmable Automatic Door Locks.......... 123
Q
Questions and Answers About Safety Belts ... 26
R
Radios........................................................ 289
AM-FM Radio.......................................... 291
Care of Your Cassette Tape Player.......... 350
Care of Your CD and DVD Player............ 352
Care of Your CDs and DVDs................... 352
Radio with Cassette and CD.................... 304
Radio with CD......................................... 294
Radio with Six-Disc CD............................ 318
Rear Seat Audio...................................... 347
Setting the Time for Radios with Radio
Data Systems (RDS)............................ 291
Setting the Time for Radios without
Radio Data Systems (RDS).................. 290
Theft-Deterrent......................................... 348
Understanding Reception......................... 350
669

Rear Axle.................................................... 527
Locking.................................................... 366
Rear Door Security Locks........................... 126
Rear Doors................................................. 126
Rear Safety Belt Comfort Guides.................. 41
Rear Seat Audio (RSA)............................... 347
Rear Seat Entertainment System................. 334
Rear Seat Operation.............................. 19, 20
Rear Seat Passengers, Safety Belts.............. 38
Rearview Mirror, Automatic Dimming with
Compass and Temperature Display.......... 180
Rearview Mirror, Automatic Dimming with
OnStar
®, Compass and Temperature
Display..................................................... 176
Rearview Mirrors......................................... 176
Reclining Seatbacks...................................... 15
Recommended Fluids and Lubricants.......... 629
Recovery Hooks.......................................... 408
Recreational Vehicle Towing........................ 424
Remote Keyless Entry System.................... 116
Remote Keyless Entry System, Operation ... 117
Removing the Flat Tire and Installing the
Spare Tire................................................ 571
Removing the Spare Tire and Tools............ 566
Replacement Bulbs..................................... 541Reporting Safety Defects
Canadian Government............................. 656
General Motors........................................ 656
United States Government....................... 656
Restraint System Check
Checking the Restraint Systems............... 111
Replacing Restraint System Parts
After a Crash........................................ 112
Retained Accessory Power (RAP)................ 137
Right Front Passenger Position,
Safety Belts............................................... 37
Roadside
Assistance Program................................. 644
Rocking Your Vehicle to Get it Out.............. 407
Routing, Engine Drive Belt.......................... 633
Running the Engine While Parked............... 175
S
Safety Belt
Reminder Light........................................ 247
Safety Belts
Care of.................................................... 592
Center Front Passenger Position................ 37
Driver Position........................................... 27
670