99 gmc suburban remote start problem
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=98264
Printed Date: July 18, 2025 at 6:13 AM
Topic: 99 gmc suburban remote start problem
Posted By: b0dypart69
Subject: 99 gmc suburban remote start problem
Date Posted: October 23, 2007 at 8:40 PM
Hello,
I am new to the remote start installation. I just installed the Viper 5900 Alarm/Remote Start on my 1999 GMC Suburbun (7.4l 454). When i remote start it, the truck starts but the service engine soon light comes on and my vehicle doesn't shift(it stays in 2nd gear only). But, if i go ahead and turn the truck off and cycle the key (reset the alarm) the vehicle starts fine with the key. Is there something i hooked up wrong? I do suspect that the Ignition 3 wire has something to do with it...I don't know.(i didn't hook up the ignition 3 wire) if i need to hook up the ignition 3 wire how do i do that, since there are only 2 ignition wires on the alarm?
Any help would be greatly appreciated.
Replies:
Posted By: KarTuneMan
Date Posted: October 23, 2007 at 8:48 PM
Make sure you have BOTH ign. powered up. Ign. 1 pink Ign. 2 white -------------
Posted By: b0dypart69
Date Posted: October 23, 2007 at 8:59 PM
yes i have them both hooked up but i do not have ignition 3 brown hooked up. is this a problem?
Posted By: Twelvoltz
Date Posted: October 23, 2007 at 9:26 PM
As KarTuneMan has already stated, your white second ignition is not being powered up correctly. The brown is an accessory and is not normally needed. DO NOT DRIVE the truck using the remote start until that white wire is energized as ignition.
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Installer, IT support, and FFL. I need less hobbies.
Posted By: techman93
Date Posted: October 23, 2007 at 10:28 PM
Most accessory wires power up the heater/ blower motor and A/C. But the main problem is the ignitions are not being powered as ignition and could be wired as accessory. Which will confuse the computer. make sure the 2nd ignition wire is set as 2nd ignition and not as accessory.
Posted By: b0dypart69
Date Posted: October 24, 2007 at 6:53 PM
thanks for the help i will reply back when i get a chance to look at the white wire thanks alot.
Posted By: b0dypart69
Date Posted: October 24, 2007 at 7:34 PM
i just checked the white wire and it was connected, so i probe the wire while i was remote starting it and there was no voltage. i did find the problem though. i didn't hook up the RED / white wire from the relay satellite. i assumed that it did not need this but i assumed wrong!! thanks for the help, you guys pointed me in the right direction!!
Posted By: KarTuneMan
Date Posted: October 24, 2007 at 9:37 PM
Not being a DEI guy, am I correct in assuming that the RED / white is a 12v input for the remote start?  -------------
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