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    1999 4l60e compatibility question

    I have a 1999 Tahoe with a 5.7l. My 4l60e transmission is trashed. I came across a 1999 Silverado nbs with a 4l60e that had a 5.3l. Will there be any issues (electrical, torque converter, mechanical, etc.) with putting the 4l60e from the Silverado in my Tahoe? Thanks
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    Mystifying misfires on a 99 Tahoe

    I have a 99 Tahoe with random misfires on 2 and 3 that I have been trying to diagnose for months. I have replaced the cap, rotor, wires and plugs with ACDelco parts. I swapped out the coil and ignition control module with a spare I had and still have the misfires. I put a PCM from Black Bear...
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    Long term fuel trim issue no codes

    I have a 99 Tahoe and I am trying to figure out a loss of power and loss of mpg. Bank 1 LTFT about 0 and Bank 2 LTFT approx. -10 and the STFT Bank 1 & 2 were also approx. 0 after days of driving. I measured fuel pressure and my key on engine off was 54psi and idle was 48psi. Originally I thought...
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    Is there any major differences between the 97 and 99 5.7s?

    I have a 99 2dr Tahoe L31/M30. I have a warped head and came across a 5.7 from a 97. Are there any major differences that I need to be made aware of or is it a simple swap? Jeff
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    Were there 5.7l Vortec lubrication design changes?

    I was talking to a gentleman about the 5.7l Vortec and what he thought about going from a 30 weight to a 40 weight oil. He told me that there were one or two years where they changed the design of the lubrication system and if you used a 40 weight oil, it would starve the engine of oil. Has...

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