Duramax LB7/LLY DSP5 User Guide
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www.efilive.com
LLY ECM Blue Connector wiring installation.
Note: Use the same process on the ECM’s Black or Grey Connectors.
#1
- Lift Grey lever
#2
- Detatch plug
#3
- Lift grey cover
#4
- Grey cover lifted
#5
- Now removed
#6
- Remove pin lock
#7
- Remove pin filler
#8
- Keep pin lock safe
#9
– Insert new pin & wire
#10
– Push in pin to latch
#11
– Reassemble 6 & 4
#12
- Finished
The LLY ECM also has the connector pin numbers stamped on its case for
confirmation, though these can be difficult to see when the ECM is fitted to the
vehicle.
All installation photos courtesy of Tony Nostedt
