GMC Yukon XL 2500 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your GMC Yukon XL 2500

GMC Yukon XL 2500 Problems

Check Engine Light With Code P1870

Vehicles equipped whit a 4 speed automatic transmission may develop a harsh 1-2 shift and/or illumination of the Check Engine Light with code P1870 stored. This can be caused by wear of the bore for the TCC isolator and regulator valves in the valve body. This condition does not commonly occur until the transmission reaches normal operating temperature. If the valve body is worn, replacement will be necessary to correct this concern.

Replace spark plugs every 100,000 miles

The spark plugs should be replaced every 100,000 miles. Our technicians recommend replacing the spark plug wires also at this time.

"No start" Caused By Failed Fuel Pump

The fuel pump may fail causing the engine to stall and not restart.

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GMC Yukon XL 2500 Questions

My Yukon ended up in a water filled ditch up to the windshield. (1 answer)

I have dried out fuse boxes, electrical plugs and checked the ECU. The water also filled the floorboards inside, just in the front. I purged the water from the cylinders and drained the oil. Vehicle will start but will only run for a couple seconds and then shut off. I need help to figure this out.

My Yukon has no power, won't start. The key remote isn't working either (1 answer)

How do I remove the SERVICE RIDE CONTROL from the dash. (1 answer)

I REPLACED THE AUTO RIDE ELECTRIC SHOCKS WITH REGULAR H.D. TRUCK SHOCKS.THANKS

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GMC Yukon XL 2500 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.

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.

Engine Stalls From Electrical Module Short

The chassis electrical module can short due to internal contamination. This can result in the vehicle stalling. Dealers will replace the chassis electronic module free of charge to resolve the concern.

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