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2500HD 6.0 LQ4 to LQ9 Conversion

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Old Mar 5, 2006 | 07:40 AM
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From: Union Bridge Maryland
Default 2500HD 6.0 LQ4 to LQ9 Conversion

Hey guys new member, awesome board. Got a 2001 Silverado 2500HD 6.0 LQ4, got oil issues, failing leak down test. Instead of rebuild, GM Performance has new LQ9's. Will every thing match up, especially ECU and electronics? Any issues I should address before this is attempted. Will be bolted to a freshly rebuilt and upgraded 4L80E. Will it cause any DTC's? Any info greatly appreciated. Also if anyone has a fresh LQ9 for sale, let me know.
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Old Mar 5, 2006 | 08:35 AM
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Originally Posted by Rookie8
Hey guys new member, awesome board. Got a 2001 Silverado 2500HD 6.0 LQ4, got oil issues, failing leak down test. Instead of rebuild, GM Performance has new LQ9's. Will every thing match up, especially ECU and electronics? Any issues I should address before this is attempted. Will be bolted to a freshly rebuilt and upgraded 4L80E. Will it cause any DTC's? Any info greatly appreciated. Also if anyone has a fresh LQ9 for sale, let me know.
Everything is the same, except for the PCM it will need to be reprogrammed.
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Old Mar 5, 2006 | 01:00 PM
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Yup direct bolt in. Get your PCM(computer) reprogrammed from Nelson------>sponser. And you'll be good to go.
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