tach wire in 2004 chevy suburban
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=45384
Printed Date: July 13, 2025 at 1:33 PM
Topic: tach wire in 2004 chevy suburban
Posted By: chevyjr73
Subject: tach wire in 2004 chevy suburban
Date Posted: December 16, 2004 at 9:35 PM
does anyone know where the tach wire is located in a 2004 chevy suburban? also how hard is it to install the passkey bypass module for a remote starter in this vehicle? any help would be appreciated. thanks.
Replies:
Posted By: snguyen
Date Posted: December 16, 2004 at 9:50 PM
Chevrolet | Suburban | 2003-2004 |
Remote Starter Wiring Colors and Notes | Function | | Vehicle Color | Location | Start: | | Yellow | Ignition Switch Harness* | Ignition #1: | | Pink | Ignition Switch Harness | Ignition #2: | | White | Ignition Switch Harness | Ignition #3: | | N/A | **** | Accessory: | | Orange | Ignition Switch Harness | Brake Light: | | White or Blue | At Brake Switch | Tach Signal: | | White | At PCM located on drivers side of engine | Parking Lights: | | Brown (+) | Driver Kick Panel | Headlights: | | White (-) | At headlight switch | Diesel Glow Plug: | | No Color Information | Please Call With Info | Clutch Bypass Wire: | | N/A | | Notes: | | *Equipped with Passlock II as standard equipment on all models - Please Use Universal Alarm Bypass Module to bypass. Note the Passlock wire colors may vary, but they are still located in a three pin wiring harness at the ignition key cyl. **OEM Alarm also disarms when ignition turns on ****All DesignTech remote starters except the 2xx22 have an ignition 3 output - it is the WHITE/ black in the 'control harness.' This wire will be used to control the anti-theft bypass. |
Chevrolet | Suburban | 2003-2004 |
Alarm and Keyless Entry Wiring Colors and Notes | Function | | Vehicle Color | Location | Constant +12 Volts: | | Red or RED / White | Ignition Switch Harness | OEM Alarm Disarm: | | Lt Green | At Module Inside Driver Door** | Dome Lights/Superv: | | Gray/Black | At Light Under Dash | OEM Horn: | | Black (-) | At sSteering Column Harness | Power Lock: | | See Note Below | * | Power Unlock: | | See Note Below | * | Trunk Release: | | N/A | | Alarm Input Wire: | | Gray/Black | At Light Under Dash | Notes: | | *This vehicle uses an extremely complex lock/unlock circuit- basically the same system as the 2002 TrailBlazer. To Lock/Unlock, we recommend use of the 23561 Door Lock Interface module, available through DesignTechs sales department at 800-337-4468 . Alternatively, you can wire inside each door for reverse polarity door locks. The 23561 module is easier to install, less expensive, and requires less wiring than the reverse polarity/relay method. Motor Wires, should you choose the reverse polarity method, are Gray for Lock and Tan for unlock. SOME of these vehicles have a switch on the right rear panel which can lock/unlock all doors as a positive trigger system. If so equipped, the wires are Lt Blue for lock and White for Unlock.Connection of the locks without the module is not supported. |
Posted By: snguyen
Date Posted: December 16, 2004 at 9:51 PM
Posted By: radiostation
Date Posted: December 17, 2004 at 10:44 AM
Easiest Tach on the new GM trucks is pop out the instrument cluster, 4 7mm screws, grab a white wire. It's the onlt Tach for the diesels. Steve
Posted By: SAR
Date Posted: December 17, 2004 at 3:55 PM
grab the #1 injector, black with white, opposite the pink.
Posted By: chevyjr73
Date Posted: December 17, 2004 at 10:08 PM
i tried the odd wire on one of the injectors for the tach wire. i held the valet switch and it stayed lit which indicated it had learned the tach. now the problem is it will crank over when i hit the remote starter but the engine will not fire up and run. i installed the dei passlock2 bypass module. im pretty sure that i wired it up right. i cut the yellow ignition wire and spliced the yellow to the wire going towards the key and the yellow/black going away from the key and the black wire to the black wire. what else could cause this condition? thanks.
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