Wheel spin sensors on a 97? Unplugging for 1/4 mile runs - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 01-19-2005, 11:24 PM   #1
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Default Wheel spin sensors on a 97? Unplugging for 1/4 mile runs

Hi guys, my 97 LeSabre has the same traction control and wheel spin elimination routines that the Series II Bonnevilles do. Even with traction control turned off, if you free spin the wheels the PCM aggressively pulls out timing so that you can't spin them until timing is put back in. I have an Intense Standard PCM in the car now, but I didn't opt for an extra $100 worth of tuning to eliminate the wheel spin timing cut routine (I probably should have). On the street, wheel spin isn't the biggest issue, but running the 1/4 mile it will be. I definitely don't want to spin and end up with the PCM pulling timing out on me. I've run lots of rear wheel drive high horsepower cars on street tires at the strip before. I know that street tires + rubber coating the track + water from water box makes it like you're launching on ice. If I disconnect the wheel spin sensors, I know this will not only eliminate the possibility of the PCM pulling out timing from wheel spin, but it will also disable ABS until they are reconnected. Pulling the wheel sensors won't throw an SES light right, just an ABS light? I finally got my TPS adjusted so it isn't throwing mysterious codes anymore, so I really don't want to throw an SES light messing with the wheel sensors, and then have to drive back over to an Autozone so I can clear the code (yeah I really need to get a scan tool).
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Old 01-20-2005, 02:48 AM   #2
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Yes unplugging the sensors will disable the ABS system......And you'll throw a ABS light I think...Don't remember for sure......I've done it on my 95.
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Old 01-20-2005, 03:26 PM   #3
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I pulled the sensors on my '96 SSEi. It gave an ABS light but nothing else. If it gives any other codes, couldn't you just unplug the battery to reset the computer?
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Old 01-20-2005, 03:40 PM   #4
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When they're back in you'll be fine.

Another way to do this is to pull the ABS fuse I believe.
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Old 01-20-2005, 06:52 PM   #5
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96, when you set a hard code with an OBDII, pulling the battery and even the ECM fuses will not reset the code. I had a TPS code that I had to keep resetting with a scan tool until I got it fixed. I also don't like having to make the engine keep relearning pulling the battery if it'* not necessary. Thanks guys, I figured the ABS light would be the only trouble indicator that pulling the wheel sensors would tip off.
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Old 01-20-2005, 08:19 PM   #6
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Quote:
Originally Posted by 1997_LeSabre
96, when you set a hard code with an OBDII, pulling the battery and even the ECM fuses will not reset the code.
I guess I should invest in a scan tool, or become a frequent visitor to the local parts store to use theirs.
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Old 01-20-2005, 10:00 PM   #7
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In my 1998 SSE and old 1999 SSEi the lights and the codes went away after I reconnected the WSS'*. When I replaced the MAP sensor in my 1998 SSE the CE light and code went away without disconnecting the battery -this one surprised me. I think I ruined my new o2 sensor though from running with the bad MAP for about 10k (still got 30+ mpg'* so I wasn't too concerned).
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