4l60e overdrive issue - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Myself · 10-19-2015, 09:54 PM

My buddy's nephew is buying an '02 K1500 4x4. It has the 4.8l. Trans seems fine everywhere except part throttle cruise around 45-50mph. It wants to jump back and forth between drive and overdrive. Leave it in drive and no issues, speed up to 60mph no issues. Stock gearing and tire size 160,000 miles. Only codes being thrown are knock sensor and fuel level cause the sender is bad. Would the knock sensor cause this problem or maybe a TPS out of adjustment? I really don't feel like it's a solenoid issue. Thoughts?

10-19-2015, 09:54 PM	#1
Myself Registered User Join Date: Oct 2005 Location: Northern Arkansas Posts: 1,170	4l60e overdrive issue My buddy's nephew is buying an '02 K1500 4x4. It has the 4.8l. Trans seems fine everywhere except part throttle cruise around 45-50mph. It wants to jump back and forth between drive and overdrive. Leave it in drive and no issues, speed up to 60mph no issues. Stock gearing and tire size 160,000 miles. Only codes being thrown are knock sensor and fuel level cause the sender is bad. Would the knock sensor cause this problem or maybe a TPS out of adjustment? I really don't feel like it's a solenoid issue. Thoughts?



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