2008 silverado remote start

to me sounds like dball. are you getting status output signal to dball from the remote start

I'm not sure. How do I tell if I am geting status output? Is that the ground out when running?

the bypass might be seeing an ignition input constantly so even when the truck is not on and running the bypass still sees it as running so instead of starting the truck it will just go into pit stop mode and it doesnt crank the starter. check the wiring diagrams and see if the bypass has an ignition input wire and check to see if it is wired correctly.

I have it wired per page 3 of the of this diagram. . The DBALL pink ignition in wire goes directly to the RS ignition out wire.

yes it is the ground out when running had a similar issue in a 12 silverado which wires same way as your 08. We used DLPK instead of dball but had same issues as you basically. Wouldnt crank but would do a take over from key. ended up having a bad connection on either the resistor wire or whatever you wanna call it. that resistor wire is what tells vehicle to start through a resistance. i would check the connection on that wire. if i recall that also triggers accessory. is your radio turning on or just the ignition

Yes, the radio is comi g on along with the headlights. I can hear the fuel pump run, everything seems like it is going to start but then no crank.

have u tried putting a key in ignition switch to see if it will remote start then. i would still dbl check connection on rcode wire

I have tried puting the key on the switch but it still will not RS. What does the rcode wire do? I have verified that the two violet wires are going to it per the instructions. Perhaps it is worth mentioning again that everything was working fine until he took it to the dealership to have a new key made. After that it will not RS. I have replaced the RF loop twice.

that shouldnt have effected it. the r code is what tells vehicle to start via a resistance. it puts a resistance to it to start the vehicle. your issue is with r code wire IMO there is a pink/black or a pink wire which is rcode and a white wire which is the 5 volt resistance. if you put a 9.6k ohm load accross those 2 wires it should start. this is what the dball is doing to get car to start. i would put a voltmeter on the rcode wire and see what it is doing during remote start. i believe it will read one value for igntiion then another for crank

This truck uses two individual types of antitheft to prevent you from starting it. It's called PKIII+ It's a combination of a transponder key (chip in the key) AND a resistor based ignition switch. And then they add a factory alarm as if all that mess above wasn't enough (that's the + part). You need both the key code and the right resistance to start it. If you hold the key up to the ignition and it won't start, it's because the right resistance isn't being read by the BCM at the same time as it's reading the key code. UNLESS you didn't program the RFLooP correctly. Excuse me for saying but DB-ALLs suck......... sorry had to get that out. I have put RS in many newer Silverados (08-12) and never had issues with them starting. However, I use idatalink ONLY because of these exact issues with the DB-ALLs. But, moving along....... Are you using the correct guide for this installation? I see a different guide for that setup using Firmware - GM6 v2.39 - New guide updated 122812 The new guide doesn't show you having to use the resistor code wires at all?