Lbz

[TFZ_Z06]

Changed from dsp5 back to stock tune but pcm emission pass counter stays at zero . Any ideas on why ?
It's time for the nazis to smog the truck...trying to prep it.

[djv86]

Have dealer flash ecm to stock or if your close to the central coast I could help


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[TFZ_Z06]

Have dealer flash ecm to stock or if your close to the central coast I could help


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I have complete efi setup. What will you do differently than I did with a full flash ?

[djv86]

Factory gm equip. Anytime I've flashed a truck to stock with efilive all my monitors have ran and passed within 30 minutes or less shoot there's only 3 and the 02 have problems with egr passing and if they don't pass the ref will wave it but 02 only from my understanding


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[TFZ_Z06]

Factory gm equip. Anytime I've flashed a truck to stock with efilive all my monitors have ran and passed within 30 minutes or less shoot there's only 3 and the 02 have problems with egr passing and if they don't pass the ref will wave it but 02 only from my understanding


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Something is wrong because I flashed it 2 years ago and it worked fine.

GM software ok the makes sense. Thanks am on W coast

[djv86]

I figured your California hence the smog situation haha I'm on the central coast


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[TFZ_Z06]

I should know in the next few days. Having reflash done in AM. Wonder whats wrong w/EFI Live?

[TFZ_Z06]

Had the factory reflash it. Still no change, no codes, and stuck with a zero on the pass counter. Going to smog it Sat. I hope its wrong. EFI Live if you have ideas, please post.

[LB72004]

You should have missfire, ccm (comprehensive components monitoring) and egr. Which one(s) aren't clearing?

[TFZ_Z06]

You should have missfire, ccm (comprehensive components monitoring) and egr. Which one(s) aren't clearing?

UDATE: WUPASS=1, WUEPASS=0 per log.
The follow was extract using the V2 Log all diagnostics option.



[INFO]
DATE=APR, 30 2017 *(Actually today, the V2 is wrong)
TIME=18:21:02

[ECM INFO]
VIN=Unknown
OS=12632483
Serial=86ANTINAZI
Calibration ID=N/A
Stream=E35

[ECM CVN]
12632485=DCE2XXXX
12632483=138DXXXX
12632700=E1BXXXXX
12632678=44F2XXXX
12632667=9DCXXXXX
12632654=0916XXXX
12632640=147EXXXX
12632720=F56EXXXX
12632484=FF3XXXX

[ECM Monitor Status (Since DTCs were cleared)]
MIL=OFF
DTC_CNT=0
MIS_SUP=YES
FUEL_SUP=NO
CCM_SUP=YES
CAT_SUP=NO
HCAT_SUP=NO
EVAP_SUP=NO
AIR_SUP=NO
ACRF_SUP=NO
O2S_SUP=NO
HTR_SUP=NO
EGR_SUP=YES

MIS_RDY=YES
FUEL_RDY=YES
CCM_RDY=YES
CAT_RDY=YES
HCAT_RDY=YES
EVAP_RDY=YES
AIR_RDY=YES
ACRF_RDY=YES
O2S_RDY=YES
HTR_RDY=YES
EGR_RDY=YES

[ECM Monitor Status (This driving cycle)]
MIS_ENA=YES
FUEL_ENA=NO
CCM_ENA=YES
CAT_ENA=NO
HCAT_ENA=NO
EVAP_ENA=NO
AIR_ENA=NO
ACRF_ENA=NO
O2S_ENA=NO
HTR_ENA=NO
EGR_ENA=YES

MIS_CMP=YES
FUEL_CMP=YES
CCM_CMP=YES
CAT_CMP=YES
HCAT_CMP=YES
EVAP_CMP=YES
AIR_CMP=YES
ACRF_CMP=YES
O2S_CMP=YES
HTR_CMP=YES
EGR_CMP=NO

[ECM DTCs Info]
MIL_DIST=0 km (0 miles)
CLR_DIST=662 km (411 miles)
WARM_UPS=45

[ECM DTCs EPA Current]

[ECM DTCs EPA Pending]

[ECM DTCs Enhanced]
P0504=ECM,--PHX--I

[ECM Freeze Frame 0]
LOAD_PCT=20.8%
ECT=65

[TFZ_Z06]

regarding P0504. I had a short on my trailer a while back, but replaced trailer wiring and ebrake controller. All seems fine since. I guess that would not affect smog readiness though.

[LB72004]

Looks like the egr is not ready -
[ECM Monitor Status (This driving cycle)] - EGR_CMP=NO

[TFZ_Z06]

Looks like the egr is not ready -
[ECM Monitor Status (This driving cycle)] - EGR_CMP=NO

Ahhhhh. I'll give it a few days to see if it cycles like the WUPASS did. I hope I didn't plug it up. I drove it for 2 years w/no plate and turned off via tune. I wonder what kind of test it undergoes to pass internally. Thanks for catching that.

[LB72004]

If you have a way of monitoring egr command state you should see it cycling open and close, i am not sure on the percent open it will command, when it is idling and up to minimum temperature. 135 degrees i think

[TFZ_Z06]

If you have a way of monitoring egr command state you should see it cycling open and close, i am not sure on the percent open it will command, when it is idling and up to minimum temperature. 135 degrees i think

Ok, the EPA counter went up to 1. Looks like I just need to drive it a few cycles now.

WUPEPASS=1
WUPASS=1

UPDATE1: Ok, I think I figured it out. Today, ecm reported a P0128. Seems the thermostat is not allowing it to get hot. The temp has be running cold on the first large white line now for about 2 months. Previously it ran closer to 190-200. It does appear to have about a 1/2 container of fluid in the coolant tank.

UPDATE2: Problem Solved. The thermostat one or both were bad. As soon as I installed new ones, the temps when back up properly allowing heat cycling.