Duramax 6.6L LBZ/LMM
DSP5 User Guide
- 14 -
www.efilive.com
9. At this point, the batteries need to
be disconnected!
Locate the ratcheting lever on the
lower connection of the ECM and
pull upward (toward the sky). As
the lever rotates upward, the plug
will back out of the ECM. Assist
the ratchet in backing out the
connector. The ratchet will stop
after about 90° of rotation.
10. This connection is referred to as C2
of the ECM. (We’re interested in
C1 above it, but C2 needed to be
removed in order to make C1
available.)
Remove connector C1 (directly
above C2). The same ratcheting
lever is on this connector as C2,
except the lever needs to be pulled
down (toward the ground).
11.
Here’s C1 after being unplugged
from the ECM.
12.
There’s a pink clip in the connector
that holds the pins in place. This
needs to be removed. I used a
small allen-wrench to get down in
the notch of the pink clip and
applied pressure to the end of the
connector to remove it.
