How do i fix it?
2011 Chevrolet Silverado 1500

How do I fix it?

(2011 Chevrolet Silverado 1500)
My 2011 chevy silverado check e light came on and it said engine power is reduced. Service traction control. And service stabitrac . Still running turn the key off for a min and start back up runs fine. Check engine light says on. The code that came up at auto zone was PO0641 does anybody have any ideas to fix it? I drve it today after I reset the engine light yesterday and it did it 2 more times but I drove probably 12 miles when it did it the 1st time and then drove probably 25 miles when it did it again. The check engine light is still on but all the other stuff that popped up is gone!!!
What seems to make the problem better or worse? When I turn it off for a couple of minutes and restart.
How long have you had this problem? Just started Saturday.
Tags: chevrolet, silverado 1500
2 answers & 0 comments
Popular Answer
on November 18, 2019

Unless you have the required testing equipment and talent to use the equipment then YOU can’t fix it.

Sorry but that’s just how it is.

There is a problem within the 5 volt reference circuits either to one of the sensors OR the control module itself.

*Hands-on* testing / diagnosis by qualified personnel WILL be required.

Good luck!
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on November 18, 2019

Unless you have the required testing equipment and talent to use the equipment then YOU can’t fix it.

Sorry but that’s just how it is.

There is a problem within the 5 volt reference circuits either to one of the sensors OR the control module itself.

*Hands-on* testing / diagnosis by qualified personnel WILL be required.

Good luck!
Sign in to reply
on November 18, 2019
Hello,

P0641 means "Power Take Off" will not engage. This is highly abnormal to see, unless you have hydraulic accessories being driven sometimes off of the transmission "PTO" unit.

Diagnostic testing and troubleshooting per the shop manual is really needed here; there are many possible causes and nothing easy to point to.

You absolutely should find out before driving much further.
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