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Would a faulty EGR valve cause a 2001 GMC Yukon to die at highway speed?
Wiki User
∙ 12y ago
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My 2002 Yukon XL (about 76,000 mi. at the time) Died at highway speed twice in the same trip from NC to MA I had a bad O2 sensor on the way to Myrtle Beach, had it replaced ($270 at a dealer ouch!)and on the way back to MA It died on me w/no warning, turns out it was restricted catalytic converters that had to be replaced (thank you 100,000 mile warranty)
Take your Yukon to the dealership and have them run the codes on there computer. they'll probably charge you about $75 bucks but it should tell you what was going on with your motor when it quit. and may save you allot of time and $$ in trial and error
Wiki User
∙ 12y ago
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