poor acceleration

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Posted by Peter ( on 14:11:09 01/21/11

2000 Sub K1500 5.3L, 90,000 miles

I posted last week about a check engine light that translated into a bad O2 sensor. The sensor was replaced and the light went out. Now, I am getting complaints from the family drivers that the Sub has no pickup. You have to really mash the pedal to get any acceleration. It will go 65-70mph but it takes longer to get there.

I am thinking it is a bad catalytic converter maybe related to the O2 sensor going bad.

Any suggestions? I'll talk to my tech next week as well.

- Peter

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