Are the dreaded Check Engine Lights on again? If so, are the frequent trips to the mechanic heavily costing you your valued time and money?
Well, INNOVA 3123 GM OBD1 Code Reader can help you clear the Check Engine lights effortlessly.
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INNOVA 3123 GM vs. Actron CP9690 vs. Foxwell NT510 Comparison Chart
![]() INNOVA 3123 | ![]() Actron CP9690 | ![]() FOXWELL Nt510 |
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Customer Rating | ![]() | ![]() | ![]() |
Price | ![]() | ![]() | ![]() |
Product Dimensions | 10" x 2" x 6" | 4" x 11" x 13.5" | 7.9" x 1.5" x 3.9" |
Item Weight | 11.2oz | 3.63lbs | 1.45lbs |
Pros | Compatible with most domestic GM vehicles manufactured from 1982 to 1995; Can read and reset ABS codes; Reads CEM; Offers DTCs definitions. | Contains built-in library with code definitions; Color LCD screen; Can Perform ABS and Airbag Diagnosis; Compatible with most OBDI and OBD2 (1984-2013) GM,Ford,Chrysler,Honda,Nissan,Toyota, Hyundai vehicles; Offers live engine data. | Compatible with OBD1 and OBD2 vehicles; - Most vehicles manufactured from 1996 to 2016 - 2014 and 2015 models; Can diagnose all electronic systems of a vehicle. |
Cons | Only scan domestic GM vehicles built from 1982 to 1995; Does not support live data. | Customer service is not really good. | Not compatible with Mac Systems |
Bottom Line | INNOVA 3123 GM OBD1 Code Reader is an effective code reader for DIYers with GM vehicles. | Actron CP9690 scanner is definitely one to consider if you want a tool that can diagnose the engine, ABS, and SRS. | Foxwell NT510 is built for BMW. (There are also available versions for other makes.) |

INNOVA 3123 GM Overview

The best part is that you do not have to be a professional tech to read and clear codes using this OBD1 scan tool.
This is because INNOVA 3123 GM OBD1 Code Reader allows you to retrieve codes and subsequently defines the codes.
And how does the code reader works?
INNOVA 3123 GM OBD1 Code Reader uses a simple principle to read codes. Whenever you connect it to your vehicle, it accesses the vehicle’s onboard computer and retrieves Digital Trouble Codes ( DTC). You will see that the codes are displayed and subsequently explained on the screen.
As a result, this code reader is popular among the average vehicle owners, car enthusiasts, and DIY who wants to read and clear codes.
The detailed review of INNOVA 3123 GM OBD1
Compatibility
This code reader is designed explicitly for diagnosing most domestic General Motors trucks and cars manufactured from 1982 to 1995. You can retrieve ECM and ABS codes on GM domestic vehicles that were manufactured before 1995.
INNOVA 3123 GM OBD1 Code Reader is also compatible with Windows software.
Although you cannot update INNOVA 3123 GM, you can easily connect to your PC for an enhanced user experience.
Display
The simple to use INNOVA 3123 GM OBD1 Code Reader allows you to read codes from its screen. The moment you connect this code reader to your vehicle onboard computer, it displays a blinking light as a sign of on-going diagnosis.
The retrieved codes are displayed and defined on the screen. Once the problem has been fixed, INNOVA 3123 GM OBD1 Code Reader has buttons that can help you reset the Check Engine lights.
INNOVA 3123 GM OBD1 Code Reader is multilingual. It means that you can read the retrieved codes either in English, Spanish, or French.
Software
INNOVA 3123 GM OBD1 Code Reader works based on OBD I software. The software is compatible with most GM domestic cars as well as trucks. It can read and reset CEM and ABS codes on vehicles that were manufactured from 1982 to 1995.
Most average car owners find this software incredibly easy to use as they can quickly scan their vehicles accurately.
Bonus: What’s the difference between OBD1 and OBD2?
Features and Functionality
This scan tool is a trusted and highly efficient GM code reader. It is effortless to allow average car owners to perform diagnostic functions previously reserved only for mechanics.
When you diagnose your car, all you need to do is use a cord to connect to your vehicle’s computer self-test connector. This tool helps the code reader safely and effectively access the vehicle’s onboard computer to retrieve codes.
As a result, you will be able to perform various functions that include:
- Read and rest ABS codes
It is possible to effectively read the Anti-lock braking system (ABS) with INNOVA 3123 GM OBD1 Code Reader. This tool is a vital safety measure as you can avert possible accidents by reading and resetting ABS codes using this general motors code reader.
- Read and reset CEM codes

INNOVA 3123 GM OBD1 Code Reader can retrieve CEM codes. This is one of the GM obd1 code readers that can help you pinpoint CEM issues with high precision. It not only reads the code but also helps reset the code once the problem has been fixed.
- Multilingual
It is possible to read codes in English, French, and Spanish using INNOVA 3123 GM OBD1 Code Reader.
- Define DTC codes
It is possible to retrieve codes using INNOVA 3123 GM OBD1 Code Reader. Also, it goes ahead and defines the codes. This functionality is essential as you can effectively read the codes and explain what it means. This makes it possible for an average car owner who has no technical skills in car maintenance to diagnose their vehicles.
- Compatible with GM vehicles
This Innova scan tool is compatible with General Motors trucks and cars made from 1982 to 1995. Most of these vehicles are trucks and cars built with onboard computers. However, you cannot use INNOVA 3123 GM OBD1 Code Reader on vehicles weighing more than one ton.
- Compact design
This tool is one of the code readers designed with portability in mind. It weighs 11.2 ounces and with dimensions of 10 x 2 x 6. Therefore you can take it wherever you go and make a diagnosis whenever you want.
INNOVA 3123 GM OBD1 Code Reader is a simple code reader that comes with great features and functionality. As a result, you can effectively scan your vehicles with a lot of ease.
Here are the benefits of using INNOVA 3123 GM OBD1 Code Reader:
Pros
- Compatible with most domestic GM vehicles manufactured from 1982 to 1995
- Is incredibly easy to use
- Can accurately read ABS and CEM codes
- Has code definition functionality
- Has a compact design for portability
- It is affordable
- Ruggedly constructed for durability
- Packaged with a codebook for easy diagnosis
- It is multilingual as it supports English, Spanish, and French languages.
Cons
- Only scan domestic GM vehicles built from 1982 to 1995
- Does not support live data
Recommendation
INNOVA 3123 GM OBD1 Code Reader is an effective code reader for DIY for obvious reasons.
To begin with, it is one of the code readers that is really simple to use. Besides, you can safely access the onboard computer of your vehicle to retrieve ABS and CEM code.
If you are wondering about the price then take it easy. INNOVA 3123 GM OBD1 Code Reader is one of the cheapest code readers in the market.
However, if you want to perform an advanced diagnosis, Foxwell NT510 is the best scan tool to settle for. It is primarily designed for professional techs.
Check Price at AmazonThe Bottom Line
INNOVA 3123 GM OBD1 Code Reader is a must-have OBD1 scan tool that can help you deal with the Check Engine Lights. This General Motors code reader can help you save time and money as you can do for free what a mechanic would have done with a cost.
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