05 Caddy SRX, CompuStar 2WSS-AS?

Should I attempt to do a CompuSTAR  2WSS-AS install on my '05 Caddy SRX?  I'm a mechanic for 25 yrs and great with electronics but I don't want to get into a situation where I need special  product knowledge or experience in order to do a good job. Where would be the best place to purchase the unit? There's a couple for sale on Ebay. On their site they state that if you buy it online the warranty is void.

yah if you buy it online the warranty is void

as for the caddy, you can use the 556U to bypass the factory immobilizer, but if you use the 556U you will have to go into each door for doorpin and the driver door for doorlocks

I don't know how well the 457G from DEI works on the GM vehicles with passkey3, if this works you will not have to go into any door for anything, it will work through the databus wire on the diagnostic plug

someone else should have some info on the 457G and if it will work on this vehicle

I perferably like the GM-SL modules but I think they are only available in parts of canada, not sure who makes them

I have exactly the same in my 2005 ford and it works perfectly, when you say are there better ones out there, everyone has there opinions, BUt I do like compustar, clifford I also like

The GM-SL module does work for this vehicle and it also works for the 2006 model of the SRX

it does heated seats, heated mirrors, it controls factory alarm, does dorrlocks, trunk release, and some other stuff,

It does all this through the databus wire on the diagnostic plug, it also bypass the passkey 3 or passlock whichever your vehicle has through the databus wire

you don't evne have to go to any of the passlock wires