Why does my GMC 2500 have a Def low message?
During cold temperature conditions a dealer may encounter a customer vehicle with a DEF low message or a speed limiting message even if the vehicle is known to be full of DEF. Additionally, the dealer may encounter a customer vehicle with a DEF range that does not reset after a refill event.
Why is my Def warning not clear on my GMC?
If the vehicle has been driven for a few miles, the ignition has been turned off (allowing the ECM to go to sleep for at least 5 minutes), and the DIC will not update, the message may have become latched into the ECM. There are three different reasons for a DEF (Diesel Exhaust Fluid) warning message to set.
What happens when a Duramax goes to Def?
When it gets to DEF Empty, the message changes to 500 miles to speed 65 mph speed restriction. This is significant, because it doesn’t rely on the ‘estimate’ of how much is in the tank, and how many miles of range it ‘thinks’ you have until empty.
What does Def fluid range mean on GMC Duramax?
Note: THIS PROCEDURE MUST BE FOLLOWED EXACTLY; EVERY STEP MUST BE PERFORMED AS DETAILED. In operating temperatures of -9C / 15F or less, customers may comment on an “Exhaust Fluid Range” message displaying on the DIC even though the DEF fluid has been filled or is known to be full. This is likely because the truck is in the “Frozen Tank Status”.
During cold temperature conditions a dealer may encounter a customer vehicle with a DEF low message or a speed limiting message even if the vehicle is known to be full of DEF. Additionally, the dealer may encounter a customer vehicle with a DEF range that does not reset after a refill event.
Is there a problem with my GMC diesel truck?
The problem is a software issue and not a parts issue. They do have a temp fix for this concern at this time and it involves a engine computer reprogram. Yes the truck will have a speed reduction if you keep driving. First it will be reduced to 55 then down to 5.
When does a GMC 2500 go to Warning level 3?
Warning Level 2 automatically advances to Warning Level 3 when the ECM detects an ignition ON to ignition OFF event. A level 3 warning remains active as long as the estimated range remaining is greater than 644 km (400 mi) based on current DEF consumption rates. No prompts or warnings are presented to the driver.
How big is a GMC Sierra 3500 HD Denali?
Sierra 2500 HD Denali truck comes in 4WD Crew Cab with 6′ 9″ standard box or available 8′ long box. 158.95-172 IN. 68.1/68.3 IN. 10.08–10.12 IN. Sierra 3500 HD Denali truck comes in 4WD Crew Cab with either a 6′ 9″ standard box or available 8′ long box. Long box is available with an SRW or DRW configuration.
The problem is a software issue and not a parts issue. They do have a temp fix for this concern at this time and it involves a engine computer reprogram. Yes the truck will have a speed reduction if you keep driving. First it will be reduced to 55 then down to 5.
Warning Level 2 automatically advances to Warning Level 3 when the ECM detects an ignition ON to ignition OFF event. A level 3 warning remains active as long as the estimated range remaining is greater than 644 km (400 mi) based on current DEF consumption rates. No prompts or warnings are presented to the driver.