chewie1997 Posted April 8, 2009 Report Share Posted April 8, 2009 I installed a Z2 in my 2004 Pontiac Grand Prix. How necessary is the VSS wire? The unit is working fine without it. I tried to find it but it is not listed on the Directechs sheet. Any ideas? Thanks! Quote Link to post Share on other sites
Yacdogg Posted April 8, 2009 Report Share Posted April 8, 2009 It's not necessary, but on a side note, i have a 05 impala, and I have a vss wire, so I'm SURE there is one in the grand prix, check out naioa.com or clubgp.com and ask them in the forums, they could help you on where it is. Quote Link to post Share on other sites
jwq Posted April 8, 2009 Report Share Posted April 8, 2009 I installed a Z2 in my 2004 Pontiac Grand Prix. How necessary is the VSS wire? The unit is working fine without it. I tried to find it but it is not listed on the Directechs sheet. Any ideas? Thanks! Connecting it will greatly improve the response times and accuracy... Quote Link to post Share on other sites
wedebrook Posted April 16, 2009 Report Share Posted April 16, 2009 i too have an impala (hi yacdogg ) and i connected my VSS wire to the dark green wire at the BCM. Quote Link to post Share on other sites
1loudls Posted April 16, 2009 Report Share Posted April 16, 2009 right from the directech's websight Speed Sense dk. green TAC module, pin 4 The TAC (Throttle Actuator Control) module is on top of the engine on the throttle assembly. Quote Link to post Share on other sites
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