Equus 3123 GM Code Reader

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This code reader accesses a vehicle's on-board computer to retrieve engine and electronic transmission codes and ABS vehicle computer codes. It connects to your vehicle's computer self-test connector and shows the trouble through your vehicle's "check engine" light. It includes detailed instructions in English, French, and Spanish with illustrations and code definitions applications.
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Technical Details

- Diagnostic trouble codes flash on the dashboard's "check engine" light
- Retrieves ECM and ABS vehicle computer codes
- Connects to your vehicle's computer self-test connector
- Includes instructions in English, French and Spanish
- Will not harm a vehicle's computer system
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 "Code scanner - Equus 3123 for GM products" 2009-09-27
By W. Gardner (Martinsville, VA)
This product would not work on my 94 Pontiac although it is listed as a vehicle it will scan on. I have read in forums that other purchasers suffer the same fate -

 "Good for what its worth" 2009-09-23
By R. Boyd (California)
It is a great tool for what it does. It is very simple and compact and light. It will flash the light on the dash and give you a flashing code that you look up but you might be surprised to know that all you really need is a paper clip and the knowledge of which 2 pins in the OBD1 connector to short together and you will save money. Please be sure you know which 2 pins before you try anything maybe even if you have a technician that you know or go to could give you some incite but they might not. The pins that must touch for engine codes are A and B. For ABS(anti-lock braking system) you must touch pins A and H. Hope this helps you in your diagnosis.

 "not for diesel engine" 2009-06-07
By M. Rene de Cotret (Salem,Oregon)
I have a 1994 1/2 ton c1500 Chevrolet Pickup with a 6.5L diesel engine. I only found out after reading in the manual that it won't work on diesel engine. That was not said in the descriptionon Amazon website.

 "works and cheap.." 2008-11-23
By W. Edel (AZ United States)
This product is inexpensive and does the basic job its intended. if you are a weekend mechanic on older vehicles it works fine. Nothing fancy, just works.

 "Does not work on Geo Prizms?" 2008-07-20
By turkinwisconsin (Milwaukee, WI USA)
I would like to see if it works on Geo Prizms. Geo Prizm is made by NUMMI (GM and Toyota joint venture). Any ideas?


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