Can’t find tach wire in 2000 tahoe.
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=16624
Printed Date: July 07, 2025 at 5:13 AM
Topic: Can’t find tach wire in 2000 tahoe.
Posted By: MasterInstall1
Subject: Can’t find tach wire in 2000 tahoe.
Date Posted: July 23, 2003 at 5:59 PM
I cannot seem to find the damn tach wire on my 2000 tahoe. I have installed a viper 550hf, but the starter just keeps on cranking. I have taught the 550 the tach wire (by using the dip switches in the alarm brain), but after trying several wires no luck. HELP!!
Replies:
Posted By: draasch
Date Posted: July 23, 2003 at 9:57 PM
Tach Signal WHITE AT ENGIN HARNESS INLINE TO I/P
* Located Under Drivers Dash In Pin E8 At Bottom Right Of The Connector ------------- Good Luck
David
Ace Security
813-376-9778
Tampa
Donate to the 12volt
Posted By: mj239air
Date Posted: July 24, 2003 at 9:15 PM
I have a 2000 Suburban and found my Tach Wire behind the instrument cluster. It was a white wire. Good luck
Posted By: ViperATC5
Date Posted: July 26, 2003 at 5:28 PM
TACHOMETER|white *5 | |ECM *3
*3 ECM is located near the battery, down low, between the fender and the fan under the black plastic cover. On the 4.3L, the tach wire is at pin 20 in the connector labeled 'red', and VSS wire is at pin 3 in the connector labeled 'black'. On the 4.8L, 5.3L, and 6.0L, the tach wire is located at pin 10 in the 'red' connector, and VSS wire is located in pin 50 of the 'red' connector.
Posted By: my12volts
Date Posted: July 28, 2003 at 12:26 PM
grab your tach @ one of the fuel injectors.....i only had a problem with that one time and that was in and 98 impalla and i had to set the crank time for an extra second.....
Posted By: ViperATC5
Date Posted: July 30, 2003 at 6:13 PM
If you are setting your crank time you are not using the tach feature on the remote start. The tach feature is designed to crank the vehicle untill the unit registers an RPM reading. Crank time is used in voltage sensing operations
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