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clinebarger · 12-15-2014, 10:34 PM

The 3-2 downshift Solenoid & Valving is also an issue.

'93-'95 3-2 Solenoid is controlled via PWM & the 3-2 Valve is isolated from the Solenoid.

'96-'08 3-2 Solenoid is controlled via On/Off, The 3-2 Valve is actuated directly.

I would advise against using '93/'94/'95 4L60E's, You may get the TCC control ironed out with a custom tune, But custom 3-2 PWM tables that works right may be tricky.

All that to run a 21 year old 4L60E core of unknown origin? Get a correct 300MM 4L60E for a LS & have it rebuilt.

12-15-2014, 10:34 PM	#4
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: 5.3 to 4l60e... Advice needed! The 3-2 downshift Solenoid & Valving is also an issue. '93-'95 3-2 Solenoid is controlled via PWM & the 3-2 Valve is isolated from the Solenoid. '96-'08 3-2 Solenoid is controlled via On/Off, The 3-2 Valve is actuated directly. I would advise against using '93/'94/'95 4L60E's, You may get the TCC control ironed out with a custom tune, But custom 3-2 PWM tables that works right may be tricky. All that to run a 21 year old 4L60E core of unknown origin? Get a correct 300MM 4L60E for a LS & have it rebuilt.