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Tim West
Tim West, ASE Certified Technician
Category: Car
Satisfied Customers: 4638
Experience:  ASE Certified Service Manager for Bridgstone/ Firestone
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2002 Oldsmobile Bravada: liter BCM. Replaced and flashed ecm

Customer Question

Still having a problems with 2002 Oldsmobile Bravada 4.2 Liter BCM. Replaced and flashed ECM for the third time in 2 years. But BCM (new) returns Code U1000-Class 2 Data Link Malfuction. Where do I start, and how many Class 2 Data Links are there? Found one under rear seat towards pass. side, and one at kick panel under steering column. Where to now?
Submitted: 7 years ago.
Category: Car
Expert:  Tim West replied 6 years ago.
Thanks for visiting Just Answer,
There are several reasons this code will set. Since the code is setting by itself.
On this vehicle you should check for connector problems in the underhood fuse block. Inspect the fuse box and connections and get back to me.