99 gm suburban & astrostart 2006 problem

hi, i'm tryin to diagnose the problem with our 99 gm suburaban & and astrostart premium 2006 remote starter installed a few years ago by a store.

when remote start is attempted, dash lites come on for a second, then the horn honks once, and no further start/crank attempts are made by remote starter.   vehicle works fine with the key.  dash & go mode (idle mode) doesn't work either, & when dash & go is initiated via the remote, i hear a click, park lites don't come on, & vehicle doesn't keep running when key taken out of ign.  i've replaced the brains with brand new one & programmed using 2100 install manual & still the same problem.  it has a astrostart passlock bypass module installed that has 3 connectors with 9 dip switches.  the other thing is i've check the wiring with a test lite & all seems ok, and the led blinks 5 times, & the hood sw is ok to me!

any help to this problem is appreciated 'cause i've installed various remote starters & this one just doesn't add up.

tnx, mark

The most likely problem is the hood pin.....does the unit have the "old style" magnetic hood pin?

I believe thats what the 2006 used.   Also . The master on/off switch....? Is it on, Iknow thats a silly question  but !

If the hood pin is in doubt and its the old maget type....replace it with a "normal one" and reprogram as normally open.  If it appears that the switch is OK, put your multimeter on the hood pin wire at the brain. Open and close the hood. Should see ground when opened, and nothing when closed

hi, i've checked the hood pin switch wire right at the brains with the hood open & closed, it's ok.     i disconnected all 3 plugs from the passlock module & the vehicle will still crank with the key but it won't run - i expect this since still in security violation.     i checked the brake line at the brains & i only get 12v when brake pressed.     the starter/ign/heater wires are hooked directly from brains to vehicle wiring.     i'll try key just on then remote start as sujested.     it has the magnetic hoodpin type, i'll replace it with the spring loaded pin type & try again.

thanks

hi, when all 3 plugs from passlock module disconnected, the security light was on with the key.     the security light was not on during remote start attempts.     i checked the hood switch at the brains again & it is open when hood is down - ok.     i tried with key in 'on' position, & attempted a remote start, but no start was attempted by brains.     i kept magnetic hoodpin switch installed.

I put in old brains, & programmed up using 2100 guide, it now attempts remote start, cranks for approx 1/2 sec, then shuts off, & it tries 2 more times, it reports error code 12 (over 3000rpm).  i programmed tach manually, & still the same error code.

why the new brains won't work?  may be not exactly wired pin for pin or the programming tables are different.

any ideas, tnx.

That one sounds like a passlock issue.   Also make sure your unit is programmed for 8 cyl. from the tach wire at theBCM under the hood.  Do you know how to do the programming of the passlock module?