4l60e question
Thread Starter
Melting Slicks
Joined: Mar 2004
Posts: 2,141
Likes: 2
From: Pittsburgh Pa
4l60e question
are all 4l60e's the same... as far as same vehicle model, different years.. like could i use for example a 99 truck tranny in a 94 truck.. or a 96 vette tranny in a 94 vette
Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
If my memory is correct, 94 and 95 are the same. If I get some time tonight, I will check the gm books and see what the differences are exactly. Late 96 went to a different bolt on bellhousing. Also, the possibility of a different length input shaft. I do not want to put my foot in my mouth, so don't hold me to this info yet. I an quite familiar with 82-93 units. The 94 and up models I do less, so I can recall less.
Safety Car
Joined: Apr 2003
Posts: 3,793
Likes: 9
From: VA
Some relevant info:
http://impalassforum.com/cgi-bin/ult...=4;t=006665;p=
Year to Year B/D-body Swap Guide:
To put a ’94 4L60E into a ’95 car: Direct bolt-in; no mechanical or electrical changes required. The PCM must be reprogrammed with ’94 transmission base code to avoid setting a silent code (Check Engine Light (CEL) does not illuminate, but code stored in memory). Trans will operate normally without reprogramming.
To put a ’94 4L60E into a ’96 car: The ’96 tailshaft housing and VSS must be installed on the ’94 4L60E before the trans can be bolted into the car. No other mechanical or electrical mods necessary. The PCM must be reprogrammed with ’94 transmission base code to avoid setting a silent code (Check Engine Light (CEL) does not illuminate, but code stored in memory). Trans will operate normally without reprogramming.
To put a ’95 4L60E into a ’96 car: The ’96 tailshaft housing and VSS must be installed on the ’94 4L60E before the trans can be bolted into the car. Technically, the 3-2 downshift solenoid should be swapped also, but experience shows that it is not required.
To put a ’95 4L60E into a ’94 car: No mechanical mods required. Mod A must be performed. The trans will operate normally without Mod A but TCC lockup will not work, so highway and cruising gas mileage will suffer and more heat will be produced in the transmission.
To put a ’96 4L60E into a ’95 car: The ’95 tailshaft housing and VSS must be installed on the ’96 4L60E before the trans can be bolted into the car. Technically, the 3-2 downshift solenoid should be swapped also, but experience shows that it is not required. No other modifications are necessary.
To put a ’96 4L60E into a ’94 car: The ’94 tailshaft housing and VSS must be installed on the ’96 4L60E before the trans can be bolted into the car. Mod A must be performed. The trans will operate normally without Mod A but TCC lockup will not work, so highway and cruising gas mileage will suffer and more heat will be produced in the transmission.
Mod A (method 1):
An additional wire must be run from the PCM pin TBD to pin TBD on the trans harness for the TCC to work. Also, the PCM must be reprogrammed with ’95 transmission base code.
Mod A (method 2):
Swap the ’94 internal harness into '95-’96 transmission, leave PWM solenoid unplugged but installed. On the valve directly to the right of the PWM solenoid – push that valve all the way towards the outside of the valvebody , push it against the side of the valvebody and stake it into place. That’ll lock down your PWM function and it’ll function like a regular lockup. No PCM reprogramming required. Now with pics!
To put a ’94 4L60E into a ’95 car: Direct bolt-in; no mechanical or electrical changes required. The PCM must be reprogrammed with ’94 transmission base code to avoid setting a silent code (Check Engine Light (CEL) does not illuminate, but code stored in memory). Trans will operate normally without reprogramming.
To put a ’94 4L60E into a ’96 car: The ’96 tailshaft housing and VSS must be installed on the ’94 4L60E before the trans can be bolted into the car. No other mechanical or electrical mods necessary. The PCM must be reprogrammed with ’94 transmission base code to avoid setting a silent code (Check Engine Light (CEL) does not illuminate, but code stored in memory). Trans will operate normally without reprogramming.
To put a ’95 4L60E into a ’96 car: The ’96 tailshaft housing and VSS must be installed on the ’94 4L60E before the trans can be bolted into the car. Technically, the 3-2 downshift solenoid should be swapped also, but experience shows that it is not required.
To put a ’95 4L60E into a ’94 car: No mechanical mods required. Mod A must be performed. The trans will operate normally without Mod A but TCC lockup will not work, so highway and cruising gas mileage will suffer and more heat will be produced in the transmission.
To put a ’96 4L60E into a ’95 car: The ’95 tailshaft housing and VSS must be installed on the ’96 4L60E before the trans can be bolted into the car. Technically, the 3-2 downshift solenoid should be swapped also, but experience shows that it is not required. No other modifications are necessary.
To put a ’96 4L60E into a ’94 car: The ’94 tailshaft housing and VSS must be installed on the ’96 4L60E before the trans can be bolted into the car. Mod A must be performed. The trans will operate normally without Mod A but TCC lockup will not work, so highway and cruising gas mileage will suffer and more heat will be produced in the transmission.
Mod A (method 1):
An additional wire must be run from the PCM pin TBD to pin TBD on the trans harness for the TCC to work. Also, the PCM must be reprogrammed with ’95 transmission base code.
Mod A (method 2):
Swap the ’94 internal harness into '95-’96 transmission, leave PWM solenoid unplugged but installed. On the valve directly to the right of the PWM solenoid – push that valve all the way towards the outside of the valvebody , push it against the side of the valvebody and stake it into place. That’ll lock down your PWM function and it’ll function like a regular lockup. No PCM reprogramming required. Now with pics!
