C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old Apr 1, 2018 | 12:55 AM
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This is for a 1993 with the 4l60, not the 4l60e. I threw a DTC 72 (which is a bad shift solenoid). Will the shift solenoids, 1-2,3-4, for a 4l60e fit my transmission? I am having one hell of a time trying to find them for my 4l60. Thanks.
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Old Apr 1, 2018 | 06:25 AM
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Originally Posted by BacknBlack
This is for a 1993 with the 4l60, not the 4l60e. I threw a DTC 72 (which is a bad shift solenoid). Will the shift solenoids, 1-2,3-4, for a 4l60e fit my transmission? I am having one hell of a time trying to find them for my 4l60. Thanks.
How did you arrive at the DTC 72?

DTC 72 'driveability' is a switch fault NOT solenoid. You apparently don't have a FSM - Factory Service Manual. I don't believe it's likely to be diagnosed without a scanner. Do you have a fully functional quality scanner?

There's also DTC 72 for an ABS fault and a DTC 72 for a CCM faulty. How you arrived at the DTC 72 I'd say important.

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Last edited by WVZR-1; Apr 1, 2018 at 06:40 AM.
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Old Apr 1, 2018 | 09:52 AM
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Originally Posted by BacknBlack
This is for a 1993 with the 4l60, not the 4l60e. I threw a DTC 72 (which is a bad shift solenoid). Will the shift solenoids, 1-2,3-4, for a 4l60e fit my transmission? I am having one hell of a time trying to find them for my 4l60. Thanks.
..... The 4L60 does not have any shift solenoids ... recheck the fault code .....
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Old Apr 1, 2018 | 11:32 AM
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Originally Posted by WVZR-1
How did you arrive at the DTC 72?

DTC 72 'driveability' is a switch fault NOT solenoid. You apparently don't have a FSM - Factory Service Manual. I don't believe it's likely to be diagnosed without a scanner. Do you have a fully functional quality scanner?

There's also DTC 72 for an ABS fault and a DTC 72 for a CCM faulty. How you arrived at the DTC 72 I'd say important.

Attachment 48269776
I pulled the code using the paper clip method. My trans has been shifting erratically. It starts in second sometimes and also third. When this starting happening, it threw the check engine light (DTC 72). If my trans doesn't have solenoids, what could i replace to fix the problem?
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Old Apr 1, 2018 | 12:05 PM
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Originally Posted by BacknBlack
I pulled the code using the paper clip method. My trans has been shifting erratically. It starts in second sometimes and also third. When this starting happening, it threw the check engine light (DTC 72). If my trans doesn't have solenoids, what could i replace to fix the problem?
I believe that you would need a scanner to diagnose the issue. Everything related mentions using a scanner and I don't know how you could short cut that easily using meters etc. Do you know anyone with a quality scanner? Tech1, Snap-On etc. It could be maybe switch. switches, harness internal, pass through connector into the trans maybe the ECM - lots of possibilities.
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Old Apr 1, 2018 | 08:28 PM
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Originally Posted by BacknBlack
This is for a 1993 with the 4l60, not the 4l60e. I threw a DTC 72 (which is a bad shift solenoid). Will the shift solenoids, 1-2,3-4, for a 4l60e fit my transmission? I am having one hell of a time trying to find them for my 4l60. Thanks.

First place to start is do an adjustment of the TV cable to specs. If that doesn't fix your problem, the next move is to check the governor assembly.
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