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Amazon [amazon.com] has INNOVA 3123 GM OBD1 Code Reader for $ 15.00.
Shipping is free with Prime or on $ 35+ orders.

Price:
$ 18.99 lower (56% savings) than the previous price of $ 33.99

Customer reviews:
4.2⭐ / 1,439 global ratings
200+ bought in past month

About this Item:[list][*]Safely accesses the on-board computer to read ECM and ABS codes