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GM LT Drive-by-Wire Throttle Body and GM 4L60E and 4L80E Transmission Control

To identify if your engine is an early or late application, refer to your fuel pressure sensor, located behind the...
Holley EFI Part #: GVMR_550-1631
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GM LT Drive-by-Wire Throttle Body and GM 4L60E and 4L80E Transmission Control

550-1631.jpg
To identify if your engine is an early or late application, refer to your fuel pressure sensor, located behind the intake manifold. Early sensors have a 4-pin connector, whereas late sensors have a 3-pin connector. This will help you pick which kit you require for your engine.

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