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I realized that my cruise control wasn't working and then I got a check engine light. Code is p0719, code states that TCC solenoid will be inhibited, it does seem as if I have been burning gas.
Vehicle: 1997 GMC Sierra k1500 5.7L

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P0719 Brake switch circuit low

No this type of code is what is considered a B type code. you will not have the advantage of fuel economy that was designed for fuel economy . This was the whole purpose of the CK ENG LT purpose beside the clean air regulation
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Ok reason for asking is it says that there will be no 4th gear operation, don't want my trans to get to hot

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