GM product ?

I try to put remote starter unit on a GM product, but I couldn’t get it to start, so to make the story short…I didn’t paid as well as wasted 3 3/4 hours of my life I will never get back.   I don’t like GM product, but yet I continue to run in to them.   If someone got any feedback to my story I love to hear it. I sure couldn’t find the answer. Note: I have done enough of VATS to be able to do them blindfolded, but this is the first I got stuck on. Vehicle is a Buick and VATS system. No factory alarm. Remote starter power up and shut down right away. It doesn’t even get to crank. Does that on 2nd, 3rd attempt. Diagnostic reading from RS is no tach signal detected. Tach is 2.4 A/C reading and learned by module. Replace 3 unit in total on the test, same result. OK, VATS are not correctly setup. 5% tolerance, well I am 1 ohm off (the pellet in the key ) using a relay and a resistor, resistor is center of main harness in the even if it is too far from the key cylinder, yes key side and bcm side are correct, (87a, 30). Relay working, resistor working and many times, but not on this date. Maybe I am too close to the tolerance. Hood pin remove, brake light, parking remove, doorlocks remove just in case there maybe feedback, still no go. Ground next to factory bolt ground. Only thing working. Lock and Unlock.       Ah… battery problem, 12.37V reading. Not an issue, because there is no hesitation with the car starting with key. No amperage issue either because a second battery 12.65V booster eliminated any doubt about power issue. I can't seem to find out why it will power up everthing and shut down right away. I thought only Ford and Chrysler product do that. Humour me if you guys got any ideas why. BTW, does VATS not make some sort of cranking first before it close you down if the resistence is incorrect?Be careful whose advice you buy, but be patient with those who supply it.

 What is the year, make, and model of the vehicle in question? What kind of alarm?    Voltage threshold  <.5 V

Had a Cavalier act  like this once- found out that the factory preset "jumper" for 2nd ignition was on "accessory" - moved the jumper and all was fine-- I always go inside the brain box now and verify the factory default settings- I lost 1/2 hr over this one- I was using the 2nd ignition to power the theft bypass module- and it would not power during crank when set on accessory...........just a thought.......Brcidd - Engineer That Does Remote Starter Installs on the side.

topper wrote:  What is the year, make, and model of the vehicle in question? What kind of alarm?    Voltage threshold  <.5 V

01 Century, Autostart, starter only.Be careful whose advice you buy, but be patient with those who supply it.

brcidd wrote: Had a Cavalier act  like this once- found out that the factory preset "jumper" for 2nd ignition was on "accessory" - moved the jumper and all was fine-- I always go inside the brain box now and verify the factory default settings- I lost 1/2 hr over this one- I was using the 2nd ignition to power the theft bypass module- and it would not power during crank when set on accessory...........just a thought.......

I didn't miss this part. Try 3 other unit same result.Be careful whose advice you buy, but be patient with those who supply it.

You need to  connect the 2nd ignitions wich is a white wire

fivestar wrote: You need to  connect the 2nd ignitions wich is a white wire

Thanks. I still haven't miss the forest from the trees.Be careful whose advice you buy, but be patient with those who supply it.

wrong resistance on vats wire will cause no crank, what is the resistance on the key pellet? what resistance areyou using in your relay? i never trust the 10% tolerance rule i always try to be as close as possible if not exact, also, how is your relay wired, timing of relay igniting may be at the wrong pace than car requires

Wat year and car is it i deal with Gm all day at work

jim hunter, The pellet on the Key meter at - 3010 ohm, with my fluke meter. Relay and my resister - 3009 ohm, I am 1 ohm off. Key side and bcm side is on the money, also when the other way. fivestar, 01 century. I can't seem to get why it power my remote starter unit down. It doesn't even give it a chance to crank. My college and I were stump. Never happen to us before. Be careful whose advice you buy, but be patient with those who supply it.