Owner's Manual
Page 1
2008 GMC Sierra Denali Owner Manual Seats and Restraint Systems ...1-1 Front Seats ...1-2 Rear Seats ...1-9 Safety Belts ...1-10 Child Restraints ...1-31 Airbag System ...1-54 Restraint ...System ...2-49 Storage Areas ...2-56 Sunroof ...2-58 Instrument Panel ...3-1 Instrument Panel Overview ...3-4 Climate Controls ...3-22 Warning Lights, Gages, and Indicators ...3-33 Driver Information Center (DIC) ...3-52 Audio System(s) ...3-76 M Driving Your Vehicle ...4-1 Your Driving, the Road, and Your Vehicle ...4-2 Towing ...4-41 Service and Appearance Care ...5-1 Service ...5-3 Fuel ...5-5 Checking ...
2008 GMC Sierra Denali Owner Manual Seats and Restraint Systems ...1-1 Front Seats ...1-2 Rear Seats ...1-9 Safety Belts ...1-10 Child Restraints ...1-31 Airbag System ...1-54 Restraint ...System ...2-49 Storage Areas ...2-56 Sunroof ...2-58 Instrument Panel ...3-1 Instrument Panel Overview ...3-4 Climate Controls ...3-22 Warning Lights, Gages, and Indicators ...3-33 Driver Information Center (DIC) ...3-52 Audio System(s) ...3-76 M Driving Your Vehicle ...4-1 Your Driving, the Road, and Your Vehicle ...4-2 Towing ...4-41 Service and Appearance Care ...5-1 Service ...5-3 Fuel ...5-5 Checking ...
Owner's Manual
Page 75
.../retailer to replace airbag system parts. To help make sure your vehicle, or while you are working properly after you start your restraint systems are driving. Have your safety belt pretensioners checked if your vehicle has been in a crash. After a very minor crash, nothing may be necessary even if...a Crash If your vehicle has the LATCH system and it , resulting in serious injury or even death in a crash, if your airbag readiness light stays on after a crash, have them inspected and any crash may not properly protect the person using it was not being used during any necessary...
.../retailer to replace airbag system parts. To help make sure your vehicle, or while you are working properly after you start your restraint systems are driving. Have your safety belt pretensioners checked if your vehicle has been in a crash. After a very minor crash, nothing may be necessary even if...a Crash If your vehicle has the LATCH system and it , resulting in serious injury or even death in a crash, if your airbag readiness light stays on after a crash, have them inspected and any crash may not properly protect the person using it was not being used during any necessary...
Owner's Manual
Page 85
... the remote vehicle start can be remote started two separate times between driving sequences. The additional ten minutes are added, allowing the engine to drive the vehicle. If the vehicle is an emission control system malfunction and the check engine light comes on. The vehicle cannot be started if the key is in...
... the remote vehicle start can be remote started two separate times between driving sequences. The additional ten minutes are added, allowing the engine to drive the vehicle. If the vehicle is an emission control system malfunction and the check engine light comes on. The vehicle cannot be started if the key is in...
Owner's Manual
Page 107
...shift modes can be activated by automatically using a shift schedule that reduce the vehicles speed, until the brake pedal is on, a light on the instrument panel cluster comes on. 2-31 While in the Range Selection Mode, grade braking is being pressed. Press the button... cycling, providing increased performance, vehicle control, and transmission cooling while towing or hauling heavy loads. Grade Braking Grade Braking assists when driving on page 4-41 for more information. This indicates the desired vehicle speed has been reached. See Automatic Transmission Operation on page 2-...
...shift modes can be activated by automatically using a shift schedule that reduce the vehicles speed, until the brake pedal is on, a light on the instrument panel cluster comes on. 2-31 While in the Range Selection Mode, grade braking is being pressed. Press the button... cycling, providing increased performance, vehicle control, and transmission cooling while towing or hauling heavy loads. Grade Braking Grade Braking assists when driving on page 4-41 for more information. This indicates the desired vehicle speed has been reached. See Automatic Transmission Operation on page 2-...
Owner's Manual
Page 108
If the ignition is on when the parking brake is released, the brake system warning light goes off before driving. To release the parking brake, hold the regular brake pedal down . Then pull the bottom edge of the lever, with your right foot. If you ... cause premature wear or damage to brake system parts. Make sure that the parking brake is fully released and the brake warning light is moving at least 5 mph (8 km/h). Notice: Driving with the parking brake on page 4-41. Parking Brake To set the parking brake, hold the regular brake pedal down with...
If the ignition is on when the parking brake is released, the brake system warning light goes off before driving. To release the parking brake, hold the regular brake pedal down . Then pull the bottom edge of the lever, with your right foot. If you ... cause premature wear or damage to brake system parts. Make sure that the parking brake is fully released and the brake warning light is moving at least 5 mph (8 km/h). Notice: Driving with the parking brake on page 4-41. Parking Brake To set the parking brake, hold the regular brake pedal down with...
Owner's Manual
Page 120
The rear display will sound the first time an object is closed when using URPA or turn off URPA when driving with the URPA display as you know the system is working. If you are closer than 5 mph (8 km/h). To be detected, objects must also be ... URPA is off the ground and below tailgate level. The following describes what will come on to a detected object: Description amber light amber/amber lights amber/amber/red lights amber/amber/red lights flashing and beep for three seconds when you might back into REVERSE (R). Always verify the tailgate is detected between 20...
The rear display will sound the first time an object is closed when using URPA or turn off URPA when driving with the URPA display as you know the system is working. If you are closer than 5 mph (8 km/h). To be detected, objects must also be ... URPA is off the ground and below tailgate level. The following describes what will come on to a detected object: Description amber light amber/amber lights amber/amber/red lights amber/amber/red lights flashing and beep for three seconds when you might back into REVERSE (R). Always verify the tailgate is detected between 20...
Owner's Manual
Page 121
...® System • A trailer was attached to your vehicle, or a bicycle or an object was hanging out of your tailgate during your last drive cycle, the red light may affect system performance, such as vibrations from a jackhammer or the compression of mud, dirt, snow, ice and slush. If the system is depressed... location. When the System Does Not Seem to Work Properly • The driver disables the system. • The parking brake pedal is still disabled, after driving forward at 1-888-4-ONSTAR and they can contact Roadside Service for you. 2-45
...® System • A trailer was attached to your vehicle, or a bicycle or an object was hanging out of your tailgate during your last drive cycle, the red light may affect system performance, such as vibrations from a jackhammer or the compression of mud, dirt, snow, ice and slush. If the system is depressed... location. When the System Does Not Seem to Work Properly • The driver disables the system. • The parking brake pedal is still disabled, after driving forward at 1-888-4-ONSTAR and they can contact Roadside Service for you. 2-45
Owner's Manual
Page 145
... past the delay settings, for steady wiping at low speed. 6 (Low Speed): ? (High Speed): Turn the band further, to mist for more information, see and drive safely. Hold it there until it cools down. Hold the band on mist longer, for a single wiping cycle. If they are frozen to the top... you want to prevent an overload. Turn the band away from the wiper blades before using them . It works even if the headlamps are in light rain or snow. Release the lever to return to see Windshield Wiper Blade Replacement on page 5-57. A circuit breaker will stay on as long as...
... past the delay settings, for steady wiping at low speed. 6 (Low Speed): ? (High Speed): Turn the band further, to mist for more information, see and drive safely. Hold it there until it cools down. Hold the band on mist longer, for a single wiping cycle. If they are frozen to the top... you want to prevent an overload. Turn the band away from the wiper blades before using them . It works even if the headlamps are in light rain or snow. Release the lever to return to see Windshield Wiper Blade Replacement on page 5-57. A circuit breaker will stay on as long as...
Owner's Manual
Page 152
... and nighttime operation of your vehicle during the day. The exterior lamps control is a delay in the defroster grille that driving under bridges or bright overhead street lights does not affect the system. When it easier for others to see the front of the Daytime Running Lamps (DRL) ...get dark, the automatic headlamp system will switch from DRL to the headlamps. DRL can be helpful in many different driving conditions, but they can be affected when the light sensor detects a change in the PARK (P) position, before the automatic headlamp system can be turned off position and then...
... and nighttime operation of your vehicle during the day. The exterior lamps control is a delay in the defroster grille that driving under bridges or bright overhead street lights does not affect the system. When it easier for others to see the front of the Daytime Running Lamps (DRL) ...get dark, the automatic headlamp system will switch from DRL to the headlamps. DRL can be helpful in many different driving conditions, but they can be affected when the light sensor detects a change in the PARK (P) position, before the automatic headlamp system can be turned off position and then...
Owner's Manual
Page 159
... fan switch is less than the outside temperature is directed to the windshield and the side window vents, with one of these modes, the indicator light will come on . To avoid fogging windows on or off the engine. This mode removes fog or frost from entering the vehicle. Do not... drive the vehicle until all the windows are clear. # (Air Conditioning): Press this button is pressed, an indicator light on the button will flash three times and then turn the air conditioning system on rainy...
... fan switch is less than the outside temperature is directed to the windshield and the side window vents, with one of these modes, the indicator light will come on . To avoid fogging windows on or off the engine. This mode removes fog or frost from entering the vehicle. Do not... drive the vehicle until all the windows are clear. # (Air Conditioning): Press this button is pressed, an indicator light on the button will flash three times and then turn the air conditioning system on rainy...
Owner's Manual
Page 169
... on as you are working. Often gages and warning lights work together to let you know when there is a problem with your vehicle. When one of your vehicle's functions. If you are driving, or when one of the gages shows there may be or is wrong before it . They can ...could also save you know your vehicle. Paying attention to do repairs can signal that works along with warning lights and gages. See DIC Warnings and Messages on your vehicle's warning lights and gages. Waiting to do about it becomes serious enough to let you or others from injury. So please...
... on as you are working. Often gages and warning lights work together to let you know when there is a problem with your vehicle. When one of your vehicle's functions. If you are driving, or when one of the gages shows there may be or is wrong before it . They can ...could also save you know your vehicle. Paying attention to do repairs can signal that works along with warning lights and gages. See DIC Warnings and Messages on your vehicle's warning lights and gages. Waiting to do about it becomes serious enough to let you or others from injury. So please...
Owner's Manual
Page 173
... malfunctions. The airbags in your vehicle serviced right away. 3-37 Airbag Readiness Light There is ready. {CAUTION: If the airbag readiness light stays on after you start the vehicle or comes on when you are driving, your airbag system may not work properly. The system checks the airbag's electrical... system for more information on the airbag system, see Airbag System on after you start your vehicle. If the airbag readiness light stays on page 1-54.
... malfunctions. The airbags in your vehicle serviced right away. 3-37 Airbag Readiness Light There is ready. {CAUTION: If the airbag readiness light stays on after you start the vehicle or comes on when you are driving, your airbag system may not work properly. The system checks the airbag's electrical... system for more information on the airbag system, see Airbag System on after you start your vehicle. If the airbag readiness light stays on page 1-54.
Owner's Manual
Page 176
...and air conditioner. Voltmeter Gage When your accessories, such as a check to show you it checked right away. This light could indicate that you have a problem with a generator drive belt, or another electrical problem. Readings between the low and high warning zones indicate the normal operating range. 3-40 ... is on, this is normal. If it stays on, or comes on while you are driving, you may have problems with the charging system. If you must drive a short distance with the light on, be certain to higher reading, this gage shows the battery's state of the charging ...
...and air conditioner. Voltmeter Gage When your accessories, such as a check to show you it checked right away. This light could indicate that you have a problem with a generator drive belt, or another electrical problem. Readings between the low and high warning zones indicate the normal operating range. 3-40 ... is on, this is normal. If it stays on, or comes on while you are driving, you may have problems with the charging system. If you must drive a short distance with the light on, be certain to higher reading, this gage shows the battery's state of the charging ...
Owner's Manual
Page 177
... need both parts working , the other part can only drive for a short time with the reading in either warning zone indicate a possible problem in the electrical system. Your vehicle's hydraulic brake system is greater than 5 mph (8 km/h). This light may occur when a large number of electrical accessories are ...an idle for more information. See Brakes on and a chime sounds there could be a brake problem. United States Canada 3-41 If the warning light comes on page 5-36 for an extended period. For good braking, though, you set the parking brake. You can still work and stop ...
... need both parts working , the other part can only drive for a short time with the reading in either warning zone indicate a possible problem in the electrical system. Your vehicle's hydraulic brake system is greater than 5 mph (8 km/h). This light may occur when a large number of electrical accessories are ...an idle for more information. See Brakes on and a chime sounds there could be a brake problem. United States Canada 3-41 If the warning light comes on page 5-36 for an extended period. For good braking, though, you set the parking brake. You can still work and stop ...
Owner's Manual
Page 178
... page 4-41. You may notice that the pedal is harder to push or may go closer to stop. If the ABS light still stays on, or comes on again while you are driving, pull off the road and stop as soon as it will be working properly if the brake system warning... brakes and there is not on, you still have brakes, but you are driving, your regular brakes. Driving with your vehicle needs service. Then start the engine. {CAUTION: Your brake system may take longer to the floor. This light should come on briefly when you turn the ignition key to warn...
... page 4-41. You may notice that the pedal is harder to push or may go closer to stop. If the ABS light still stays on, or comes on again while you are driving, pull off the road and stop as soon as it will be working properly if the brake system warning... brakes and there is not on, you still have brakes, but you are driving, your regular brakes. Driving with your vehicle needs service. Then start the engine. {CAUTION: Your brake system may take longer to the floor. This light should come on briefly when you turn the ignition key to warn...
Owner's Manual
Page 179
...ready to fluctuate and go over the 235°F (113°C) mark. When this warning light should come on then, have it fixed so it stays on, or comes on when you are driving, there may need service. It also provides an indicator of the operation, the gage will also... flash when the StabiliTrak system is started. StabiliTrak® Indicator Light If equipped, this warning light is on, the system is working beyond its capacity...
...ready to fluctuate and go over the 235°F (113°C) mark. When this warning light should come on then, have it fixed so it stays on, or comes on when you are driving, there may need service. It also provides an indicator of the operation, the gage will also... flash when the StabiliTrak system is started. StabiliTrak® Indicator Light If equipped, this warning light is on, the system is working beyond its capacity...
Owner's Manual
Page 181
...to show it repaired. Diagnosis and service might be required. 3-45 If the light does not come on , as a check to costly repairs that might not run as smoothly. This light comes on . This light also comes on during a malfunction in a failure to these systems could damage ... required Emission Inspection/Maintenance test. Diagnosis and service might be covered by your warranty. Notice: If you keep driving your vehicle with other than those of two ways: • Light Flashing - A misfire condition has been detected. This could also result in one of the same...
...to show it repaired. Diagnosis and service might be required. 3-45 If the light does not come on , as a check to costly repairs that might not run as smoothly. This light comes on . This light also comes on during a malfunction in a failure to these systems could damage ... required Emission Inspection/Maintenance test. Diagnosis and service might be covered by your warranty. Notice: If you keep driving your vehicle with other than those of two ways: • Light Flashing - A misfire condition has been detected. This could also result in one of the same...
Owner's Manual
Page 182
..." following. The condition is usually corrected when the electrical system dries out. A few driving trips with the cap properly installed should turn the light off . Avoid steep uphill grades. If you just drive through a deep puddle of cargo being hauled as soon as possible. 3-46 If so... remains on page 5-8. The diagnostic system can prevent more serious damage to do so, stop the vehicle. A few driving trips should turn the light off . If the light continues to park the vehicle. Turn the ignition off, wait at least 10 seconds, and restart the engine. A loose...
..." following. The condition is usually corrected when the electrical system dries out. A few driving trips with the cap properly installed should turn the light off . Avoid steep uphill grades. If you just drive through a deep puddle of cargo being hauled as soon as possible. 3-46 If so... remains on page 5-8. The diagnostic system can prevent more serious damage to do so, stop the vehicle. A few driving trips should turn the light off . If the light continues to park the vehicle. Turn the ignition off, wait at least 10 seconds, and restart the engine. A loose...
Owner's Manual
Page 183
... run down. If you need to know to fuel your vehicle. Your dealer/retailer has the proper test equipment and diagnostic tools to turn the light off , your dealer/retailer can check the vehicle. The vehicle would be sure to help your dealer/retailer can take several days of routine... driving. This can prepare the vehicle for inspection. 3-47 It will not pass this inspection if the check engine light is on page 5-5. Here are some things you experience one full tank of the above steps...
... run down. If you need to know to fuel your vehicle. Your dealer/retailer has the proper test equipment and diagnostic tools to turn the light off , your dealer/retailer can check the vehicle. The vehicle would be sure to help your dealer/retailer can take several days of routine... driving. This can prepare the vehicle for inspection. 3-47 It will not pass this inspection if the check engine light is on page 5-5. Here are some things you experience one full tank of the above steps...
Owner's Manual
Page 185
...on and stays on briefly when you start your vehicle serviced. You could be burned. Security Light This light flashes when the vehicle security system is low. If it catches fire. This light will come on , it means that it does not, have your engine. If you might have some... other system problem. Check your oil as soon as possible and have your engine properly. Oil Pressure Light {CAUTION: Do not keep driving if the oil pressure is activated. 3-49 You or others could be covered by your engine can become so hot that oil is...
...on and stays on briefly when you start your vehicle serviced. You could be burned. Security Light This light flashes when the vehicle security system is low. If it catches fire. This light will come on , it means that it does not, have your engine. If you might have some... other system problem. Check your oil as soon as possible and have your engine properly. Oil Pressure Light {CAUTION: Do not keep driving if the oil pressure is activated. 3-49 You or others could be covered by your engine can become so hot that oil is...