98 PCM tach and TPS pinouts for a window switch

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Jan 17, 2007 | 08:41 AM

ARCTICWHITE98Z28

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From: Grand Rapids, MI

98 PCM tach and TPS pinouts for a window switch

I am just about done hooking up my 2 stage Dynotune window/TPS switch. I am just wondering which wires to use on my PCM for the tach and TPS. I have found pinout diagrams for 99-2002 LS1s, but none for the 98, which I know is different. Does anyone know which pinouts I use for the tach and the TPS? Right now it appears it may be the#12 dk blue wire on the blue connector for the TPS and the #35 white wire for the tach which is also on the blue connector. Can anyone who is familiar with the 98 PCM verify that? Thanks.

Jan 17, 2007 | 09:18 AM

Matt@HSW

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From: Glenolden, PA

On the '98:

Tach Wire:

Blue Connector on PCM, Pin 35 on PCM, White Wire

TPS Wire:

Pin 12 on PCM, Dark Blue Wire

Sounds like you have it right.

Matt