01 gmc tach

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=20607
Printed Date: August 19, 2025 at 3:51 AM

Topic: 01 gmc tach

Posted By: damien0304
Subject: 01 gmc tach
Date Posted: October 26, 2003 at 7:46 PM

installed crimestopper alarm/rs, got tach wire from ecm near battery, now tach in dash not showing correct rpms.
it says the truck idles at about 4000rpm, but actually
runs normal, and service engine soon light came on.

should i try different wire from coils?

Replies:

Posted By: daniel2002p
Date Posted: October 26, 2003 at 8:26 PM

Make sure you have the correct iwre from the alarm hooked up to it, and try finding the tach under the dash.

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2005 Toyota Corolla S
1.8L VVT-i I-4
Always double check your wires with a DMM!!!
Do Not Use A Test Light!!!
MECP Certified Installer!
Best Buy 665 - IN IT TO WIN IT! TEAM MOBLE!

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