GMC Yukon XL 1500 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your GMC Yukon XL 1500

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GMC Yukon XL 1500 Problems

Reduced Power and Check Engine Light

The 2008-2014 GMC Yukon XL 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.

Instrument Panel Lights Flickering and Exterior Lights Intermittent

The headlight switch used on the GMC Yukon XL 1500 is known to fail through normal operation. Since the headlight switch is also integrated into the interior lights, a malfunctioning switch can cause issues with interior lights as well.

  • Symptoms of a failed headlight switch include:
  • Headlights and taillights failing to turn on or off
  • Interior lights flicker, or fail to turn on or off
  • Gauge cluster lighting off or flickering with headlights on
  • Parking light malfunctions  

This issue is well known with General Motors Trucks and SUVs, and is solved by testing and, if needed, replacing the headlight/dimmer switch. Bad grounding wires at the tail-lights, and dirty/corroded tow package wires can also lead to some of these issues. 

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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GMC Yukon XL 1500 Questions

Why is traction assist light to off and in and out of acceleration losses power (1 answer)

Just had Transmission complete referbished

my traction control comes on offen, causing reduce engine power (1 answer)

2005 Yukon XL Denali is losing power once t/c light comes.the problem occur between the speed of 45- 80

How do you replace the transmission dipstick tube? (1 answer)

How do you change the transmission dipstick tube

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GMC Yukon XL 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.

Ignition Switch

The ignition switch actuator can bind causing the ignition switch to stick in the "start" position. If this were to occur the actuator can unexpectedly release, cause the ignition switch to snap back into the "Accessory" position. This would cause the engine to turn off with an associated loss of brake and steering power assist. If these conditions were to lead to a crash the airbags may not deploy as expected. Dealers will inspect and replace the ignition lock housing as necessary to correct this concern.

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GMC Yukon XL 1500 Reviews

I love my big girl. will differntly purchase another.
2007 Yukon XL - Interior, second row seats when folded down, blocks rear cargo space and leaves a drop in the floor. Earlier models such as the 99 & 02 all seats folded down to open up the entire cargo space with a flat floor. ABS brakes pulse and is noticeable while slowing down - 99 & 02 did not do this with the ABS brakes. Had to replace drive train less than 100K miles and does not have t...
on a cold start the oil gauge will go to 80 then drop to zero will stay on zero until 10 minutes or more of driving, then when I come to a stop it will jump to 80 and stay on 80. Please advise of possible problem and estimate repair cost. Thank you.

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