LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

skip shift

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Old 03-11-2004, 09:21 PM
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skip shift

when does the skip shift system activate itself?
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Old 03-11-2004, 09:32 PM
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your in 1st gear (of course)
you're at 35% throttle or less
you're between 15 and 21 mph
engine coolant temperature is greater than 171 F (77 C)

This will energize the skip-shift solenoid and force a 1st to 4th shift. What happens is you'll be moving happily along when suddenly the "SKIP SHIFT" light goes on in the dash. At this point you will be locked out of 2nd and 3rd. You simply cannot shift into them. At this point several options are available to you:

shift into 4th
shift into 5th
shift into 6th
coast in neutral until the RPMs drop and CAGS is disengaged
open up the throttle a bit more and shift into 2nd or 3rd

hope this helps
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Old 03-11-2004, 09:36 PM
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thanks exactly what i was looking for
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Old 03-11-2004, 09:39 PM
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More Options...

Buy a CAGS eliminator and have fun.

Remove CAGS with Tunercat or LT1 Edit.

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Old 03-11-2004, 09:46 PM
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cags eliminator works with a 95?
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Old 03-11-2004, 09:49 PM
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Yep.
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Old 03-11-2004, 09:58 PM
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Should be able to just use the resistor method for five cents.
Worked on my 96, would assume the same CAGS system is in use in 95.
Bill
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Old 03-11-2004, 09:59 PM
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a 2.2 kwatt resitor will work and you can get 5 of them for 99 at radio shack.
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Old 03-11-2004, 10:12 PM
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The following procedure requires a 10mm socket, extension, ratchet, and awl (or similar tool with a pointed tip):

Disconnect the battery.
Remove the two bolts holding the PCM to the inner fenderwell. (The PCM is the cigar box sized unit located near the passenger side hood hinge.)




Pull the PCM from its lower retaining slot and position the unit so that the connectors are accessible.
To disable CAGS, remove the 32-Way F Micro-Pack connector marked "Blue" on the PCM. There is a red retaining clip that needs to be removed first. (Once the connector is removed you will be able to see a blue connector pin guide.)


Use the awl to open the gray connector back shell (3 snap latches).
Use the awl again to remove the blue connector/pin guide located on the front of the connector (2 snap latches).



Find the white wire in location 15. This is the wire for the Skip Shift light. The pins are marked on the back of the connector where the wires go in to it.
Gently lift the pin retainer for slot 15 while gently pulling the wire from the back of the connector. Once the wire end is clear of the retaining latches, release the pin retainer. Continue to pull the wire until it is free of the connector body. (There is a seal near the back of the connector that will add a little resistance to the pulling.)
Perform the above except this time for the GRAY wire in location 13 of the PCM connector labeled "Black." This gray wire is for the Skip Shift solenoid. This is what actually disables CAGS without having to disconnect anything under the car or insert resistors. If this wire is pulled from the connector on a 96+ F-Body, the service engine light will remain lit.
Tape off the ends of the wires.
Reinstall the connector/pin guides. (They only go on one way.)
Snap the back shell in place on both connectors.
Reinstall the connectors on the PCM.
Reinstall the PCM by reversing the first two steps.
Reconnect the battery.
Even though the procedure looks complicated and intimidating, it should only take about 15 minutes to complete. This will cause error code 91 to be set and stored in the PCM in addition to code 84 set by removing the solenoid. This is only detectable by use of a scan tool. The above codes do not cause the service engine light to illuminate.

NOTE: this works on 94-95 OBD 1 cars ONLY!!
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