12 Valve Engine and Drivetrain Talk about the 12V engine and drivetrain here. This is for 1994-1998.5 engine and drivetrain discussion only.

help with tc lock up switch

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Old Jun 3, 2007 | 07:51 PM
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avengermike's Avatar
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help with tc lock up switch

okay so i did the relay wire up so the tc would free if i hit the brake, but with the switch on or off or centered it locks my truck in 2nd or 3rd and wont use the tc. i had to pull the wire going to pin 11 and disconnect it and restart my truck to get all gears back and tc. i did notice in the write up relay pins 86 and 85 are in a dif place. starting with pin 87 and going right is as follows on the relay 87,87a,85,30,86. now the write up shows 87,87a,86,30,85. has anyone had this problem?
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Old Jun 4, 2007 | 09:41 AM
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Unfortunately for you '96 is the only year that requires a dealer computer reflash in order for the lockup switch to work. Think it costs about $50.
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Old Jun 4, 2007 | 09:43 AM
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reflash? what other goods would come from this? and thank u
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Old Jun 4, 2007 | 06:57 PM
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The reflash just changes the programing for the pcm as it relates to the tranny. From what I understand the only thing you will notice different is that a lockup switch will work.
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