GMC Yukon XL 2000–2006

Outside the documents and the records

The five pages read are two on 2003 Tahoes, one each on a 2004 and a 2006 Silverado, and one on a 2005 Sierra; none is a record of a Yukon or Yukon XL. All are questions and answers on Q&A sites, and none reports how the repair ended.

• A blower motor taking too much current is named by a 2CarPros responder (2006 Silverado, a black wire that heats up and melts) as one possible cause alongside a bad connection, and by a Car Talk replier (2005 Sierra, no air from the vents) as what in some cases melts the connectors at the motor or at the resistor. In a Car Talk thread on a 2003 Tahoe (blower runs only on setting 5), repliers write that a motor that turns stiffly often burns out the resistor. 2CarProsCar Talk CommunityCar Talk Community
• The asker on 2CarPros with a 2004 Silverado (manual A/C, 199,000 miles (= 320,259 km)) writes that after replacing the melted resistor together with its connector the blower ran only on setting 5 and the resistor and wires became extremely hot; the responder answers that a motor drawing too much current is possible but not very common. 2CarPros
• In a 2CarPros question on a 2006 Silverado (the black wire gets hot and melts), the responder says the black wire is the ground and tells the asker to check the connector for a corroded, damaged or pushed-in pin, whether the wire was earlier replaced with a lighter gauge, and ground G200 near the A-pillar. 2CarPros
• The asker on 2CarPros with a 2003 Tahoe (168,000 miles (= 270,370 km)) writes that the blower would not turn off or change speed and that the battery went dead unless the 40 amp fuse under the hood was pulled, and later that there was no separate relay: relay and resistors were one unit under the dash. 2CarPros
• For the price of the part, a 2011 post in the 2CarPros thread on the 2003 Tahoe gives $45 for a resistor and $66 for a module, and a 2023 reply in the Car Talk thread on the 2005 Sierra gives under $30 for the resistor. 2CarProsCar Talk Community

The sentences above were written by FaultCrate from what shops' public pages and Q&A sites state as fact (none of the pages' wording is shown; a second reader checked each against its pages). A record of another vehicle says which vehicle. A Q&A thread is a question and advice, and may not say how the repair ended. The links below are places to look; the contents of pages not read were not checked.