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The SES light came on last week. Code that was set is P0540 (Intake Air (IA) Heater Feedback Circuit). I have reasearched this failure and determined that the most likly cause is the IAH Relay. Has anyone replaced this relay? Where is it located? Can I replace this relay myself?
Thanks for the help.
2002 GMC CC 2500HD, 6.6LTD
Stock
[ 11-12-2005, 06:25 PM: Message edited by: Troy ]
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