Remote Start 2001 Malibu

I am installing a remote start system in a 2001 Chevy Malibu with the passlock II system.   The passlock keeps changing the resistance value every time I test it.   I have heard of other installers having this problem before on other GM vehicles , however , this is the first time I have seen this happen ........... Any advice on how to get the correct resistance value ( consistently )  would be greatly appreciated !  ..... I do not have a bypass module , I am only using a relay for the passlock wires ( yellow  and black ) as I have done many times in the past.

I agree you must use the DEI 555L on these passlock2 system. I recently did an install on a 2000 chevy malibu and the autostart works perfectly. I even used an autostart system that was not originally designed to work with the bypass module --it still worked flawlessly...I am very impressed with the module well worth the money I spent on it... to save headaches use a DEI555L 

if you are going to instal using a relay the best way to get proper resistance and keep the vehicle from from going into security mode is to set parking brake and put vehicle into reverse then connect your test leads to passlock wires and then turn the key to the start position and hold to see what resistance you get.

but the best way to bypass is with bypass module. the self learning modules are the best and the simplest to instal