Corvette Cags Removal Modifiy

Doing Cags Removal the Right Way

by John Rovner (C) 1996
All of the below was obtained from the '94 Corvette service manual BOOK 2.
Use section 8a for all of this info.
Use page 8a-20-7 for PCM.
Use page 8a-22-3 for ECM models

Terms I am using :

Vin P - Base model
Vin J - LT-5 optioned
ECM - Pre '93 Vin P or all LT-5 ZR-1's
PCM - '94 and newer Vin P

ECM/PCM connector block colors:

Connector Block	ECM connector color	PCM connector color
A	Gray	Red
B	Red	Black
C	Green	Clear
D	Brown	Blue

Most people who disable CAGS crawl under the car and pull the plug where it goes into the transmission. There is a better way that also disables the shift light. Simply disconnect two pins/wires from your ECM/PCM. You can get a pin extraction tool for a couple of bucks at any place like Radio Shack. Tape off the ends or maybe use some shrink tubing.

For all ECM users,

pull DRK BLUE [ CIRCUIT 1493 ] wire from block B, pin 19 to disable CAGS
pull WHITE [ CIR 375/776 ] wire from block D, pin 6 to disable the shift indicator

For PCM users,

pull GRAY [ CIRCUIT 324 ] wire from block B, pin 13 to disable CAGS
pull WHITE [ CIR # 375 ] wire from block D, pin 15 to disable the shift indicator

It would be quite simple to use a single throw, double pole switch, if you wanted to toggle these functions on or off.

NOTE: On 95-96 models you must do what David Smith says below

John, I plugged in the "CAGS eliminator" from Mid America yesterday. It is a two-piece deal. A cap for the tranny side and matching cap for the wiring harness that clearly has a large resistor attached. It appears to be about a 220 ohm 1 watt deal. So one could probably: 1. Disconnect the CAGS light from the PCM.2.
Disconnect the harness from the tranny and place a resistor across the leads. However, for $10.95 you get quality caps, instructions, and wire ties.

Folks, Dave wanted to remove the cags function from his '96 and found that unlike previous models you cannot just pull the one wire from the PCM to disconnect the cags switch and one wire for the cags light. In pulling the cags wire from the PCM, the SES went on his '96 and stayed on.
Resetting the PCM would not clear out the error code, thus if you have a '96 you will either need to buy this kit or obtain the above resistor and then follow what I wrote above to turn the light off.

New and General September 1997	Racing and Tech

Doing Cags Removal the Right Way

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