DEF system has put truck out of operation - Chevy and GMC Duramax Diesel Forum
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Old 12-29-2010, 08:47 PM   eBay Motors  #1 (permalink)
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DEF system has put truck out of operation

Sunday started with 297 mile warning. Monday added 2.5 gallons. Continued to count down the miles. Today left at the dealer with "DEF will be empty SOON". Very disappointing and maddening. One bulletin indicated to drop and drain tank and contact, i think it was Tech 2 to get a new program. Download the program to ECM. Remove new program and reinstall original program. Makes no sence to me. The bulletin indicated this could take some time waiting for the new program that needs to be vehicle specific.
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Old 12-29-2010, 08:56 PM   eBay Motors  #2 (permalink)
oh yaaaaaaaaaa
 
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do you have to reset it like oil life when you fill it up?
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Old 12-29-2010, 09:13 PM   eBay Motors  #3 (permalink)
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GM Techlink: Search Results

Responding to Diesel Exhaust Fluid Messages
By Blog Post on July 1, 2010 4:36 PM

The exhaust aftertreatment technology of the new Duramax 6.6L diesel engine available on the 2011 Silverado and Sierra trucks and 2010 interim and 2011 Express and Savana vans features the use of Diesel Exhaust Fluid (DEF).

The DEF system must be refilled periodically in order to maintain proper operation. Refer to the June edition of TechLink for details on DEF system operation.

The DEF required for emission reduction is contained in a 5.3 gallon (20 liter) reservoir, providing a range of approximately 5,000 miles (8,000 km) between refills. If the DEF is not refilled, the vehicle's speed will be limited.

The Driver Information Center (DIC) will provide the driver with current information about the DEF system operation and range. These messages include:

· EXHAUST FLUID RANGE: 1000 MI

· EXHAUST FLUID RANGE: 300 MI

Below 300 miles (500 km) of range, the range message or speed limiting messages will appear every time the vehicle is started.

TIP: DEF should be added prior to receiving an Exhaust Fluid Empty DIC message; however, it may take several miles of driving for the DIC message to update.

With an empty DEF tank, limited speed messages will be displayed:

· 55 MPH MAX SPEED UPON RESTART (Vehicle speed limited to 55 mph (89 km/h) at the next restart.) (Fig. 7)

· 4 MPH MAX SPEED NEXT FUEL FILL (Vehicle speed limited to 4 mph (7 km/h) after the second fuel fill without refilling the DEF tank.)



Fig. 7



If the Exhaust Fluid Empty message is displayed:

· When refilling, more than one gallon of DEF must be added to release the vehicle from speed limitation.

· Wait for up to 30 seconds with the engine running for the Exhaust Fluid Empty DIC message to clear.

· If the vehicle is driven prior to the Exhaust Fluid Empty message clearing, the vehicle will still be speed limited.

· If the Exhaust Fluid Empty message clears while driving, the vehicle must be brought to a complete stop to release the speed limitation.

If DEF is added under freezing conditions, additional time may be required to release speed limitations.

The DIC also provides similar warning messages for poor quality of DEF and tampering of the DEF system.
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Old 12-29-2010, 09:56 PM   eBay Motors  #4 (permalink)
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Anybody have problems with DEF in freezing conditions?
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Old 12-29-2010, 10:46 PM   eBay Motors  #5 (permalink)
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do you have access to anymore info from TechLink?
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Old 12-30-2010, 06:59 PM   eBay Motors  #6 (permalink)
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Truck is back in operation as today

Wednesday dealer contacted Techline. Thursday A.M. Techline returned call to dealer. Dealer was told to drain DEF tank, flash ECM with special service only reset VCI calibration supplied by Techline working with Diesel Calibration Team, refill tank, start truck to clear warning message, shut down, reinstall original ECM calibration, start truck and check to ensure warning cleared. IT DID NOT WORK-MESSAGE REAPPEARED Techline line informed dealer to repeat entire procedure, if the same warning appeared they said the truck would need a new computer, which are on back order with no ETA available. I got lucky, after the second "round" the message cleared. Gotta love it
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Old 12-30-2010, 07:08 PM   eBay Motors  #7 (permalink)
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Quote:
Originally Posted by Ed B View Post
Wednesday dealer contacted Techline. Thursday A.M. Techline returned call to dealer. Dealer was told to drain DEF tank, flash ECM with special service only reset VCI calibration supplied by Techline working with Diesel Calibration Team, refill tank, start truck to clear warning message, shut down, reinstall original ECM calibration, start truck and check to ensure warning cleared. IT DID NOT WORK-MESSAGE REAPPEARED Techline line informed dealer to repeat entire procedure, if the same warning appeared they said the truck would need a new computer, which are on back order with no ETA available. I got lucky, after the second "round" the message cleared. Gotta love it
...it seems DEF is NOT READY FOR PRIME TIME...
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Old 12-30-2010, 07:18 PM   eBay Motors  #8 (permalink)
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Quote:
Originally Posted by Ed B View Post
do you have access to anymore info from TechLink?
GO HERE and enter what you are looking for SEARCH box...this search was currently DEF
GM Techlink: Search Results
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Old 12-30-2010, 07:54 PM   eBay Motors  #9 (permalink)
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Issues like this is why I refuse to buy a first model year when major upgrades have been made.
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Old 12-31-2010, 07:05 AM   eBay Motors  #10 (permalink)
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I love the line about adding DEF in freezing conditions. The warning will not reset no matter how long you let the truck run unless you leave the truck in a heated garage for a few hours. I found that out the hard way. GM had their heads up their asses on this system. I would rather have had less power than all the problems! Dodge may have taken the proper route with this after all.

If anyone is interested, I am going to get rid of my truck and buy either a Ford or a Dodge within the next month or two. I am sick of GM's crap customer no service.
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