DTC B552: BCM Keep Alive Memory Error: Description

Code B552 indicates that the keep alive, or long term memory in the BCM has been reset. It is a normal occurrence whenever power is removed from the BCM, such as anytime the battery has been disconnected and reconnected. Code B552 may only be cleared if it is not current. Under normal conditions, the code will become history by the following:

Key in LOCK.
Wait 5 seconds.
Key ON. Re-enter Diagnostics.

This code should now be history, and can be cleared in the normal manner.

NOTE: For circuit identification, see Fig 1 .

Fig 1: Identifying BCM Keep Alive Memory Error Circuit

Courtesy of GENERAL MOTORS CORP.