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03 yukon w/remote start wont shift to 2nd


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sickstyles 
Member - Posts: 34
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Joined: January 29, 2003
Location: United States
Posted: March 19, 2004 at 1:50 PM / IP Logged  
Last week I installed a remote start (DEI) on an 03 Yukon with Passlock II. Everything worked fine, but now the customer says that when he remote starts the truck, it wont shift from first to second when he drives it. I'm lost!! I dont understand how remote starting it and driving is any different from starting it with the key once it is off and driving!! Anyone with experience here would be a savior to me... thanks in advance.
Dave
Duke70301 
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Joined: March 18, 2004
Location: United States
Posted: March 19, 2004 at 2:10 PM / IP Logged  

The white wire in the sterring colum tells it when to shift .......it should not be connecte to  the remote start

draasch 
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Joined: February 07, 2003
Location: Florida, United States
Posted: March 19, 2004 at 2:19 PM / IP Logged  
make sure you have all the wires hooked up:
Make:   GMC
Model: Yukon
Year:    2003
Alarm
Constant 12 volts RED (2) IGNITION SWITCH HARNESS
Ignition 12 volts PINK IGNITION SWITCH HARNESS
Starter YELLOW IGNITION SWITCH HARNESS
Dome Light GRAY/BLACK (+) AT UNDERDASH LIGHT
Trunk Pin Switch   
Parking Lamp BROWN (+) DRIVERS KICK PANEL **
Power Lock GRAY SEE TECH NOTES
Power Unlock TAN FOR DOOR LOCK INFO
** Parking Light Wire Has Also Been Found As A BROWN / WHITE (+) High In Kick Or VIOLET (-) At Headlight Switch
Remote Start
Tach Signal WHITE AT PCM * #238
Ignition #2 WHITE IGNITION SWITCH HARNESS
Ignition #3 ORANGE IGNITION SWITCH HARNESS
Accessory BROWN IGNITION SWITCH HARNESS
Neutral Safety WHITE (-) PCM CONN C3 PIN #13 *
Brake Light WHITE (+) AT SWITCH ABOVE BRAKE PEDAL
Reverse Light LIGHT GREEN (+) EITHER TAIL LT ASSY OR TRAILER CONN
Rear Window Defrost   
*PCM Located On The Drivers Side Of The Motor. Tach Wire Is In The BLUE Conn (C1) Closest To The Firewall,Pin #49. Also Found Back Of Cluster in 24 pin GREY Conn Pin # A12 #238- See G.M. Passlock II Bypass Diagram
Good Luck
David
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chriswallace187 
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Joined: March 11, 2002
Location: Pennsylvania, United States
Posted: March 19, 2004 at 2:20 PM / IP Logged  
If the white wire is NOT CONNECTED, it can cause problems such as this. It needs to be powered up as a second ignition wire; from what I understand, it powers the electronically controlled transmission circuits, and doesn't work right if the car is started without it getting power.
derek123 
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Joined: October 09, 2003
Location: Canada
Posted: March 19, 2004 at 2:39 PM / IP Logged  

 I dont understand how remote starting it and driving is any different from starting it with the key once it is off and driving!!

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When you tstart it with the key it works fine.

When you remote start it, and miss the 2nd IGN, you are not showing the vehicle the same sequence..... there's your difference.

When you put the key in after the remote start, you have missed turn-on 'window' for the computer. It now puts the vehicle in limp mode..... and you know what happens next.

draasch 
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Posted: March 19, 2004 at 2:44 PM / IP Logged  
its not good to be in "Limp" mode.....
Good Luck
David
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sickstyles 
Member - Posts: 34
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Joined: January 29, 2003
Location: United States
Posted: March 19, 2004 at 2:54 PM / IP Logged  
i understand, it needs the second ignition wire. what about the third ignition wire, is that gonna cause any problems not being hooked up? thanks for all the help guys...
Dave
draasch 
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Posted: March 19, 2004 at 3:00 PM / IP Logged  
i would hook all of them up to be on the safe side
you can use relays if need be...
Good Luck
David
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chriswallace187 
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Posted: March 20, 2004 at 1:47 PM / IP Logged  
I don't believe those have a 3rd ignition wire on the vehicle, just the pink one and the white one. If they do, then I'd hook it up, but if you're just referring to the output from the RS, it doesn't need to go anywhere.
auex 
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Posted: March 20, 2004 at 2:00 PM / IP Logged  
You didn't hook up all of your ignitions. Here is the way it works. The computers are looking for everything to turn on in a certain order, so if you miss one of the ignition wires and remote start the car the ecu thinks that the transmission computer is bad. When you start it with the key then everything starts up like normal and works fine, but when you remote start it the car freaks out.
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