2008 GMC Sierra 1500 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2008 GMC Sierra 1500

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2008 GMC Sierra 1500
$
406
to $
1,330
2008 GMC Sierra 1500
$
201
to $
1,115
2008 GMC Sierra 1500
$
141
to $
453
2008 GMC Sierra 1500
$
57
to $
194
2008 GMC Sierra 1500
$
327
to $
913

2008 GMC Sierra 1500 Problems

Reduced Power and Check Engine Light

The GMC Sierra 1500 uses a throttle position sensor (TPS) which commonly fails and causes:

This issue is related to the throttle position sensor, and can be caused by faulty wiring to the TPS, bad connection at the TPS, or a failed TPS.

To correct this issue, the wiring harness, connector, and throttle position sensor must be inspected, tested, and/or replaced. The most common cause is a faulty TPS.

Improper HVAC Temperature and/or Air Delivery Due to Failed Mode Door Actuator

One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail, resulting in improper temperature or air delivery. If this occurs, fault code(s) should be stored in the HVAC control module which should assist in diagnoses.

Service 4WD Message May be Displayed

The 4WD transfer case encoder motor position sensor or the selector switch may fail causing the service 4WD message to be displayed. Fault code(s) stored in the transfer case control module will be of assistance in determining the exact fault causing the message to be displayed.

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2008 GMC Sierra 1500 Recalls

Passenger Frontal Air Bag Inflator Ruptures On Deployment

The passenger frontal air bag inflator may rupture on deployment, causing metal fragments to come through the air bag and injure occupants. Dealers will replace the passenger frontal air bag inflator free of charge to resolve the concern.

Passenger Frontal Air Bag Inflator Ruptures On Deployment

The passenger frontal air bag inflator may rupture on deployment, causing metal fragments to come through the air bag and injure occupants. Dealers will replace the passenger frontal air bag inflator free of charge to resolve the concern.

Possible Under Hood Electrical Fire

The heated washer module under the hood could overheat due to excessive current draw. Under certain conditions, this could result in an under hood fire. This previous recall attempt in 2008 to repair this concern did not have the expected success. Dealers will now permanently disable and remove the heated washer module to correct this concern. This recall is expected to begin on June 20, 2010.

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2008 GMC Sierra 1500 Reviews

Rated
based on 6 customer reviews
My first GM truck went 150,000 miles with only minor repairs(1995 Cheyenne) It is still on the road today! My 2008 GMC 4x4 has had one issue after another. Stuck active fuel management lifter=$3000, bad power windows switch on all doors but Driver, Bad Power mirror switch on the driver, Bad break light switch. The Service Traction Control light comes on at random. The driver side rear door...
I owned this truck since Jan 2008. Now time for an upgraded pickup have enjoyed GM products and my Sierra with 134,000 miles never gave me problems will miss this truck done nothing but minor things.
its a great truck but only one problem! the wires for the headlights on the sierra always get shorts in them and everytime u get going down the road one is out!!!

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