2004 GMC Yukon XL Denali Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2004 GMC Yukon XL Denali

2004 GMC Yukon XL Denali Problems

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.

The rear window defogger may stop working due to a wire terminal broken off of the rear glass. Our technicians tell us that terminal can be reattached using a special glue or silver solder.

The daytime running lights are prone to burning out. Our technicians tell us that the light sockets may show signs of heat damage but usually are OK. Always be sure to use the correct replacement bulb for the best life expectancy. The new bulb recommendation for 2001-2003 models is #4114K (trade number).

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2004 GMC Yukon XL Denali Questions

motor wont start on first try/must re try to start
just began today hot out today/ no dtc codes show

I just bought a 2004 GMC Yukon Denali XL used with 91k miles on it. Just started having an issue when I go to turn it on. I put my foot on the brake, turn the key, dashboard lights up and the engine makes some noise but it doesn't turn on. Do it a second time and it turns over.

Does anyo...

The thermostat was replaced because the heater was blowing cool air when sitting idle but would blow out warm/hot air once the truck was in constant motion.

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2004 GMC Yukon XL Denali Recalls

The retainer clip for the fuel rail pulse damper may fracture and allow the damper to come loose from the fuel rail. A fuel leak in the presence of an ignition source may result in a fire. Dealers will replace the engine fuel rail pulse damper free of charge. The recall began August 31, 2006. The GM recall number is 06080.

On vehicles equipped with the Bosch hydraulic brake booster, the boost pressure accumulator may crack and break away from the hydro-boost assembly during normal operation. If this were to happen while the hood is open, fragments from the accumulator could injure people standing in the immediate area. The loss of fluid while driving would cause increased steering and braking effort and a crash could occur without warning. Dealers will test the hydro-boost assembly for function of the two-function valve. If the hydro-boost assembly fails the test, it will be replaced free of charge. The recall began March 23, 2005. The GM recall number is 05006.

The hydro-boost housing relief valve bore may be out of specification. The seal may fracture as a result, which may reduce braking assist and slightly increase the steering effort while braking. Under certain conditions, more braking effort will be required to stop the vehicle. Dealers will replace the hydro-boost relief valve. The recall began June 18, 2004. The GM recall number is 04004.

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2004 GMC Yukon XL Denali Reviews

Bought this new and have had no problems until last week. At 75,000 miles the front brakes were completely shot on the inside and almost new on the outside. The front left wheel bearing also went out. Other than that, have done nothing but basic maintenance.

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