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i am new to the site , i have a 2004 avalanche 1500 Z71 and i have 128,000 miles on it. I have the cats changed at 75k . The truck just started bucking on me the other day and it felt like a misfire but as soon as i gave it more gas it went away for a second but then started again. Then just like that it stopped happening!!!!!!!!!!!!!! ANY SUGGESTIONS???????

 

 

Thanks

Posted
i am new to the site , i have a 2004 avalanche 1500 Z71 and i have 128,000 miles on it. I have the cats changed at 75k . The truck just started bucking on me the other day and it felt like a misfire but as soon as i gave it more gas it went away for a second but then started again. Then just like that it stopped happening!!!!!!!!!!!!!! ANY SUGGESTIONS???????

 

 

Thanks

 

i think i had the same thing happen to me b4 in my 06 sierra, did it buck the whole truck, rpms going up and down when you were trying to accelerate?

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