P3400 Diagnostic Trouble Code Discussion for January 2016
Cylinder Deactivation System Performance
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| Help Request | Posted | |
| 2007 GMC Yukon XL 1500 SLT 5.3L Cuts out, MIL Lamp on VIN: 1GKFC16047 P3400: Cylinder Deactivation System Performance. ... received this Yukon form a customer that had taken it to a few other shops before bringing it to me. the problem as described by the customer was a CEL, low oil pressure, and a throttle lag at highway speeds. I scanned the computer and found a P3400 (cylin... |
January 21, 2016 |
