Interesting Day in Auroraville - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Bonneville GXP/ Northstar Powered Cars Discuss your Bonneville GXP and/or any other Northstar powered Olds or Cadillac... Including the 3.5L Twin Cam V6 (Short Star ) 4.0L and 4.6L Northstar V8's. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 01-21-2004, 10:51 PM   #1
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Default Interesting Day in Auroraville

Last week I noticed that my gear shift indicator light went out. So, being the nit pick that I am I took the car in. Its far to cold to be ripping apart my centre console and monkeying with wires. Anyhow, I brought her in today for a look. They replaced the bulb and one of the wires had come out. No big deal. Fixed

But more interestingly. I know we have talked about the Performance Shift button on the shifter (Auroras) and how they dont seem to anything. Well, possibly check the wires under that shifter. Mine were disconnected. Apparently, the wires from the factory are not cut long enough. So after years of contstant shifting the wires stretch and detach.

I gave the "Kill Switch" a good this morning. DAMN, nice crisp shifts, up in the high 4000'* low 5000'*...revs up faster and I got get response. It was a real treat. They added an extra 2 inches of wire so now I have a bit of slack in there.

Oh and my shift indicator light is working again
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Old 01-21-2004, 11:25 PM   #2
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Wow, I didn't know those had performance shift.
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Old 01-22-2004, 01:08 AM   #3
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ive got the shift tables from my gm released service manuals. it has the up and down shifts for 3.48 and 3.71 geared cars. it also has them both w/ and without performance shift

they do delay shifts under light-mid throttle, even heavy. BUT in WOT the upshifts and downshifts are the exact same for 3.48/3.71 geared aurora'* w/ and without performance shift, it only makes the car feel faster under normal driving, most likely making the car feel like its revving higher because its telling the car your pushing the gas a little harder...not sure, probably part of the reason why all aurora owners report lower gas mileage with it on.

thats interesting though, i should check mine out and see if its all connected
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Old 01-22-2004, 01:14 AM   #4
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Thats how performance shift on SSEI'* works too. It just dumbs down the stock shifting. And SSEi softens up the shifts in "normal" mode.
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Old 01-23-2004, 12:03 AM   #5
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Well, it would make sense that at WOT that the shifts would be the same weather in peformance or normal shift mod. When you want power, YOU WANT POWER!!
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Old 01-23-2004, 09:58 PM   #6
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well they make it seem like, if your doing a little stoplight racing, push the "POWER" button to performance, not normal ( i think thats how its labled). but really does nothing in racing, just wastes gas.
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