My car is 2006 Chevy Malibu Maxx...I had faulty code P0455 and replaced EVAP solenoid purge valve but still getting this P0455 code and following test results:

Mode $06 report generated by Torque for Android
================================================

Vehicle VIN: 1G1ZT61836Fxxxxxx
Vehicle Manufacturer: Chevrolet
Vehicle Calibration ID: 12603217
12604340
12589120

Test report:
------------------
MID:$01 TID:$01
Rich to Lean sensor threshold voltage(constant) - O2 Bank 1 Sensor 1
Max: 0.49203V Min: 0.49203V
Test result value: 0.49203V
PASS
----
MID:$01 TID:$02
Lean to Rich sensor threshold voltage(constant) - O2 Bank 1 Sensor 1
Max: 0.54205V Min: 0.54205V
Test result value: 0.54205V
PASS
----
MID:$01 TID:$03
Low sensor Voltage for switch time calculation - O2 Bank 1 Sensor 1
Max: 0.29939V Min: 0.29939V
Test result value: 0.29939V
PASS
----
MID:$01 TID:$04
High sensor Voltage for switch time calculation - O2 Bank 1 Sensor 1
Max: 0.5989V Min: 0.5989V
Test result value: 0.5989V
PASS
----
MID:$01 TID:$05
Rich to Lean sensor switch time(calculated) - O2 Bank 1 Sensor 1
Test incomplete or dependant test failed
--
MID:$01 TID:$06
Lean to Rich sensor switch time(calculated) - O2 Bank 1 Sensor 1
Test incomplete or dependant test failed
--
MID:$01 TID:$80
- O2 Bank 1 Sensor 1
Test incomplete or dependant test failed
--
MID:$02 TID:$8a
- O2 Bank 1 Sensor 2
Max: 1,080Count Min: 0Count
Test result value: 299Count
PASS
----
MID:$02 TID:$8b
- O2 Bank 1 Sensor 2
Max: 1.10678V Min: 0.68576V
Test result value: 0.71175V
PASS
----
MID:$02 TID:$8c
- O2 Bank 1 Sensor 2
Max: 0.29073V Min: 0V
Test result value: 0.04331V
PASS
----
MID:$05 TID:$01
Rich to Lean sensor threshold voltage(constant) - O2 Bank 2 Sensor 1
Max: 0.47421V Min: 0.47421V
Test result value: 0.47421V
PASS
----
MID:$05 TID:$02
Lean to Rich sensor threshold voltage(constant) - O2 Bank 2 Sensor 1
Max: 0.52423V Min: 0.52423V
Test result value: 0.52423V
PASS
----
MID:$05 TID:$03
Low sensor Voltage for switch time calculation - O2 Bank 2 Sensor 1
Max: 0.29939V Min: 0.29939V
Test result value: 0.29939V
PASS
----
MID:$05 TID:$04
High sensor Voltage for switch time calculation - O2 Bank 2 Sensor 1
Max: 0.5989V Min: 0.5989V
Test result value: 0.5989V
PASS
----
MID:$05 TID:$05
Rich to Lean sensor switch time(calculated) - O2 Bank 2 Sensor 1
Test incomplete or dependant test failed
--
MID:$05 TID:$06
Lean to Rich sensor switch time(calculated) - O2 Bank 2 Sensor 1
Test incomplete or dependant test failed
--
MID:$05 TID:$80
- O2 Bank 2 Sensor 1
Test incomplete or dependant test failed
--
MID:$06 TID:$8a
- O2 Bank 2 Sensor 2
Max: 1,080Count Min: 0Count
Test result value: 244Count
PASS
----
MID:$06 TID:$8b
- O2 Bank 2 Sensor 2
Max: 1.10678V Min: 0.68576V
Test result value: 0.68576V
PASS
----
MID:$06 TID:$8c
- O2 Bank 2 Sensor 2
Max: 0.29073V Min: 0V
Test result value: 0V
PASS
----
MID:$10 TID:$fc
- O2 Bank 4 Sensor 4
Max: 41,237ms Min: 4,128ms
Test result value: 64,528ms
FAIL
----
MID:$21 TID:$11
- Catalyst Monitor Bank 1
Max: 41,113mHz Min: 20,528mHz
Test result value: 4,384mHz
FAIL
----
MID:$21 TID:$12
- Catalyst Monitor Bank 1
Max: 41,113mHz Min: 20,528mHz
Test result value: 4,640mHz
FAIL
----
MID:$21 TID:$a0
- Catalyst Monitor Bank 1
Test incomplete or dependant test failed
--
MID:$22 TID:$a0
- Catalyst Monitor Bank 2
Test incomplete or dependant test failed
--
MID:$31 TID:$06
Lean to Rich sensor switch time(calculated) - EGR Monitor Bank 1
Max: 41.247L Min: 4.128L
Test result value: 1.584L
FAIL
----
MID:$31 TID:$08
Maximum sensor Voltage for test cycle(calculated) - EGR Monitor Bank 1
Max: 41.249L Min: 4.128L
Test result value: 2.096L
FAIL
----
MID:$31 TID:$1d
- EGR Monitor Bank 1
Max: 41.113L Min: 20.528L
Test result value: 7.472L
FAIL
----
MID:$31 TID:$a9
- EGR Monitor Bank 1
Test incomplete or dependant test failed
--
MID:$3a TID:$c0
- EVAP Monitor (cap off)
Test incomplete or dependant test failed
--
MID:$3a TID:$c1
- EVAP Monitor (cap off)
Test incomplete or dependant test failed
--
MID:$3c TID:$c8
- EVAP Monitor (0.040")
Test incomplete or dependant test failed
--
MID:$3c TID:$c9
- EVAP Monitor (0.040")
Test incomplete or dependant test failed
--
MID:$3c TID:$ca
- EVAP Monitor (0.040")
Test incomplete or dependant test failed
--
MID:$3c TID:$cb
- EVAP Monitor (0.040")
Test incomplete or dependant test failed
--
MID:$3d TID:$c4
- EVAP Monitor (0.020")
Max: 6,553.5S Min: 60S
Test result value: 60S
PASS
----
MID:$3d TID:$c5
- EVAP Monitor (0.020")
Max: 2,500Pa Min: -8,000Pa
Test result value: -141.5Pa
PASS
----
MID:$3d TID:$c6
- EVAP Monitor (0.020")
Max: 15S Min: 0S
Test result value: 0S
PASS
----
MID:$3d TID:$c7
- EVAP Monitor (0.020")
Max: 65.535L Min: 6L
Test result value: 6.001L
PASS
----
MID:$41 TID:$16
- O2 Heater Monitor Bank 1 - Sensor 1
Max: 41,113 Min: 4,144
Test result value: 5,696
PASS
----
MID:$41 TID:$18
- O2 Heater Monitor Bank 1 - Sensor 1
Max: 41,113 Min: 4,144
Test result value: 6,208
PASS
----
MID:$41 TID:$1a
- O2 Heater Monitor Bank 1 - Sensor 1
Max: 41,113 Min: 4,144
Test result value: 6,720
PASS
----
MID:$41 TID:$d2
- O2 Heater Monitor Bank 1 - Sensor 1
Max: 17Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$41 TID:$d3
- O2 Heater Monitor Bank 1 - Sensor 1
Test incomplete or dependant test failed
--
MID:$42 TID:$d2
- O2 Heater Monitor Bank 1 - Sensor 2
Max: 17Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$42 TID:$d3
- O2 Heater Monitor Bank 1 - Sensor 2
Test incomplete or dependant test failed
--
MID:$45 TID:$d2
- O2 Heater Monitor Bank 2 - Sensor 1
Max: 17Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$45 TID:$d3
- O2 Heater Monitor Bank 2 - Sensor 1
Test incomplete or dependant test failed
--
MID:$46 TID:$d2
- O2 Heater Monitor Bank 2 - Sensor 2
Max: 17Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$46 TID:$d3
- O2 Heater Monitor Bank 2 - Sensor 2
Test incomplete or dependant test failed
--
MID:$51 TID:$21
-
Max: 41,113 Min: 4,144
Test result value: 8,528
PASS
----
MID:$51 TID:$29
-
Max: 41,113 Min: 20,528
Test result value: 10,576
FAIL
----
MID:$51 TID:$5f
-
Max: 40,960 Min: 26,816
Test result value: 14,080
FAIL
----
MID:$91 TID:$03
Low sensor Voltage for switch time calculation -
Max: 41,245 Min: 20,512
Test result value: 912
FAIL
----
MID:$91 TID:$0c
Misfire counts for last/current driving cycles(calculated) -
Max: 41,113 Min: 20,528
Test result value: 3,216
FAIL
----
MID:$a1 TID:$0f
- Misfire Monitor General Data
Max: 41,113 Min: 20,528
Test result value: 4,000
FAIL
----
MID:$a1 TID:$14
- Misfire Monitor General Data
Max: 41,113 Min: 20,528
Test result value: 5,280
FAIL
----
MID:$a1 TID:$5f
- Misfire Monitor General Data
Max: 40,982 Min: 10,432
Test result value: 14,080
PASS
----
MID:$a2 TID:$0b
EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 1 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$a2 TID:$0c
Misfire counts for last/current driving cycles(calculated) - Misfire Cylinder 1 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$a3 TID:$0b
EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 2 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$a3 TID:$0c
Misfire counts for last/current driving cycles(calculated) - Misfire Cylinder 2 Data
Max: 65,535Count Min: 0Count
Test result value: 1Count
PASS
----
MID:$a4 TID:$0b
EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 3 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$a4 TID:$0c
Misfire counts for last/current driving cycles(calculated) - Misfire Cylinder 3 Data
Max: 65,535Count Min: 0Count
Test result value: 1Count
PASS
----
MID:$a5 TID:$0b
EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 4 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$a5 TID:$0c
Misfire counts for last/current driving cycles(calculated) - Misfire Cylinder 4 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$a6 TID:$0b
EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 5 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$a6 TID:$0c
Misfire counts for last/current driving cycles(calculated) - Misfire Cylinder 5 Data
Max: 65,535Count Min: 0Count
Test result value: 3Count
PASS
----
MID:$a7 TID:$0b
EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 6 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$a7 TID:$0c
Misfire counts for last/current driving cycles(calculated) - Misfire Cylinder 6 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$a8 TID:$30
- Misfire Cylinder 7 Data
Max: 409.60001 Min: 5,641.7002
Test result value: 2,893.1001
FAIL
----
MID:$b1 TID:$07
Minimum sensor Voltage for test cycle(calculated) -
Max: -48,574mV/s Min: 8,256mV/s
Test result value: 3,936mV/s
FAIL
----
MID:$b1 TID:$0f
-
Max: -48,558mV/s Min: 41,024mV/s
Test result value: 8,032mV/s
FAIL
----
MID:$b1 TID:$15
-
Max: -48,846mV/s Min: 8,288mV/s
Test result value: 11,104mV/s
FAIL
----
MID:$c1 TID:$18
-
Max: 41,113 Min: 4,144
Test result value: 6,336
PASS
----
MID:$d1 TID:$1f
-
Max: 41,113 Min: 4,144
Test result value: 8,144
PASS
----
MID:$d1 TID:$21
-
Max: 41,113 Min: 4,144
Test result value: 8,656
PASS
----
MID:$d1 TID:$32
-
Max: 0 Min: 20,561
Test result value: 13,008
FAIL
----
MID:$f0 TID:$f2
Manufacturer defined MID -
Max: 41,228 Min: 20,512
Test result value: 62,192
FAIL
----

End of report.

Any help greatly appreciated before my Dec. 2013 emission test.

Thank you.