Question about 2001 GMC Yukon XL

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Loss of power, transmission not shifting

Recently on the way back home from an out of town trip the Yukon started to climb a mountain pass and the engine started losing power. I was traveling at 75 mph and it starting dropping speed.
It was as if it was laboring to climb. I pulled over, checked the trans. fluid level and it was good. I waited awhile to let the vehicle cool, restarted and continued my trip home.
The vehicle ran o.k for awhile, maybe 15 minutes, but started losing power again, this time on flat roadway. I pulled over, opend the hood, let it cool again and while I was waiting I noticed a small filter attached to the Air filter compartment and it was orange, the instructions on the filter said that if the color turned orange it was time to change it.
Could this of been the problem? I was now in the city and the vehicle ran o.k at city speeds ( 35 mph ) , but still hesitates to shift up when pulling out from a stop sign or stop light.
I also have to mention that the vehicle has never given me problems on trips so this is puzzling.

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That orange signal is telling you that your air filter is almost clogged up and the engine is not getting enough air to run porperly. By all means change your air filter. Depending on dust conditions that you drive in, this should be changed every 18 months or so.

Posted on Aug 07, 2008

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