2002 Trailblazer Remote start Problem

I had a 2002 Trailblazer come in today for a Viper 160XV. I used the 555l and a 455g.  The car remote start and start with the key. Only problem is that after the install the Check Enigine light and Reduced Engine power lights are both on. Alos the customer just called me saying thats the car wont go past 30 MPH and that it completely died on her on the road. I have her taking it in to the dealer to see what the codes pull. Has oneone ever ran into this problem before? Or have any idea what is wrong with the car?

Thanks,

Chris

Update.

She just called me back. Said she didnt take it to the dealer but rather her dad's friends shop. According to them the reason the lights came on is because I tap into the wrong brake wire. I didnt grap it at the switch on the brake but rather another white wire I found on a module on the covers for the steering rack. It read something like Trailering Package or something like that.

Now I can be wrong but I dont see how that would have anything to do with the problem. Since all that that wiring is doing is sensing for 12 volts to shut the car down. If I remember correctly I found the wire on a module on the cover panel for the steering rack. I think it was labled something like trailering package ot something like that. Has anyone ever ran into this problem before?Does it make sense to anyone? As far as what we are doing for her is refunding her the money for the unit and install. She's returning it. And covering her for the towing fee.

Yes I tested everything all worked fine even the 455G. I even tested the wire I grabbed as brake. Worked fine. I have done this before, grabbing the brake wire at other places besides the switch.  Never had this problem before. The thing i did noticed though was that when I looked in her owner manuel to see what the codes indicate I found a dealer work order. It was for lights coming on on the dash. They pulled a misfire code. I thought that maybe that would also trigger the reduced engine power light and thats  why I told her to take it to the dealer. But instead she took it to her dads friend shop.