Question about Buick Cars & Trucks
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Posted on Jan 02, 2017
Sounds like a blown fuse to one of the computers, either the ECM (engine control computer) or the BCM (body control computer). The ECM fuse should be under the hood and the BCM fuse in the cabin. The U1064 means a loss of communication on the data line between computers (64 usually is the BCM). If the computers can't communicate they will shut down the engine and set trouble codes. The other issue could be a faulty ignition switch not allowing power to a computer (but not common for cavaliers or sunfires). If fuses are good, chances are you have a faulty computer somewhere in the data line, shorting out communication.
Posted on Feb 24, 2011
As previous post stated you may have data cable unhooked somewhere.
B0040- Second Row Right Frontal Stage 2 Deployment Control (Subfault)
B0099- Right Frontal Restraints Sensor 2 (subfault)
U1026- Loss of Active Transfer Case Control Module Communications.
U1064- I do not have a listing for that code on hand. May be able to obtain it when I get to my shop tomorrow.
Posted on Oct 14, 2011
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