2015 Tahoe LTZ Error Codes PO796 and PO741
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2015 Tahoe LTZ Error Codes PO796 and PO741
Is anyone familiar with this?
Hello all, I have a 2015 Tahoe LTZ with just about 68k miles on it. We were taking a road trip this weekend and driving on the thruway at 65 mph, suddenly the car slowed down, started to hesitate, and I feel the engine lose power and little ability to accelerate...along with the check engine light appearing. Was able to safely pull off the thruway and call a tow ....thank you AAA... to nearest Chevrolet dealer....which was closed.....and waited till this morning for the service dept to reopen and have the check engine light diagnosed.
The diagnostic error codes PO796 and PO741 came back. Service tech advised that those are codes related to the transmission and the torque converter and the pressure control solenoid 3.
Still trying to digest what im hearing and the options being presented. If anyone has any advice or experienced this situation, id love to hear about it. thanks
Hello all, I have a 2015 Tahoe LTZ with just about 68k miles on it. We were taking a road trip this weekend and driving on the thruway at 65 mph, suddenly the car slowed down, started to hesitate, and I feel the engine lose power and little ability to accelerate...along with the check engine light appearing. Was able to safely pull off the thruway and call a tow ....thank you AAA... to nearest Chevrolet dealer....which was closed.....and waited till this morning for the service dept to reopen and have the check engine light diagnosed.
The diagnostic error codes PO796 and PO741 came back. Service tech advised that those are codes related to the transmission and the torque converter and the pressure control solenoid 3.
Still trying to digest what im hearing and the options being presented. If anyone has any advice or experienced this situation, id love to hear about it. thanks
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Joined: Apr 2021
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This is a pretty common failure mode. If you look up the common failures/repairs on the 6L45/50/80/90 you’ll see that torque converter clutch failures are the typical failure mode and cause a slew of downstream failures. The converter clutch degrades due to poor friction performance and ultimately sends parts of the clutch flaking off and down into the valve body and sump where it can wear out the pump, and cause sticking solenoids.
There are a bunch of TSBs and PIPs related to this issue but they are all somewhat insulated from each other even though they all share the same root cause. Hopefully GM will give you some love and extend your warranty, but you’ll at least need a converter and a valve body, possibly a trans depending on the contamination.
There are a bunch of TSBs and PIPs related to this issue but they are all somewhat insulated from each other even though they all share the same root cause. Hopefully GM will give you some love and extend your warranty, but you’ll at least need a converter and a valve body, possibly a trans depending on the contamination.
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Joined: Aug 2022
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P0741 with P0740 and PO0796
This is a pretty common failure mode. If you look up the common failures/repairs on the 6L45/50/80/90 you’ll see that torque converter clutch failures are the typical failure mode and cause a slew of downstream failures. The converter clutch degrades due to poor friction performance and ultimately sends parts of the clutch flaking off and down into the valve body and sump where it can wear out the pump, and cause sticking solenoids.
There are a bunch of TSBs and PIPs related to this issue but they are all somewhat insulated from each other even though they all share the same root cause. Hopefully GM will give you some love and extend your warranty, but you’ll at least need a converter and a valve body, possibly a trans depending on the contamination.
There are a bunch of TSBs and PIPs related to this issue but they are all somewhat insulated from each other even though they all share the same root cause. Hopefully GM will give you some love and extend your warranty, but you’ll at least need a converter and a valve body, possibly a trans depending on the contamination.
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Joined: Dec 2019
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They are all transmission codes.
Have you ever done a transmission fluid change? That's the number one issue, nobody changes transmission fluid every 50k miles. Transmission needs oil changes just like the engine.
My '11 gets fluid changes regularly, at 144k miles and no issues, and it tows lots of trailers. Took my old '99 Yukon to 220k miles and sold it running fine, and it towed trailers also.
Have you ever done a transmission fluid change? That's the number one issue, nobody changes transmission fluid every 50k miles. Transmission needs oil changes just like the engine.
My '11 gets fluid changes regularly, at 144k miles and no issues, and it tows lots of trailers. Took my old '99 Yukon to 220k miles and sold it running fine, and it towed trailers also.
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