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transistors change, this DTC sets. If this DTC does not fail this ignition, continue to monitor this DTC 29: Locating and repairing an individual condition may correct more than one DTC. DTC U0107 Step Action Values Yes No Schematic Reference: Engine Controls Schematics 1 Did you perform the Diagnostic System Check - - Go to Step 2 Go to Diagnostic System Check - Engine Controls 2 1. Turn ON the ignition, with the engine OFF. 2. Remove the cover from the underhood electrical center. 3. Test both sides of the ETC fuse with a test lamp connected to ground. Does the test lamp illuminate on at least one side - Go to Step 3 Go to Ignition Relay Diagnosis 3 1. Turn OFF the ignition 2. Test for voltage at the ETC fuse with a test lamp connected to ground. Does the test lamp illuminate? - Go to Step 22 Go to Step 4 4 Connect a scan tool. - Go to DTC P0601- P0607, P1600, P1683, or P2610 Go to Step 5 5 1. Start the engine. 2. Increase the engine speed to 3,000 RPM, if possible. 3. Monitor the DTC Info option using the scan tool. Does the scan tool indicate this DTC failed this IMPORTANT: If the Driver Information Center is displaying - Go to Diagnostic
2004 Hummer H2 2004 ENGINE PERFORMANCE Engine Controls Diagnosis (DTC P0507 (TAC) To DTC U0107) - 4.8L, 5.3L, and 6.0L - Hummer H2
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