What causes an Allison Transmission to slip?
Excessive heat leads to slipping. If this occurs in hot weather, install a cooler to prevent it. These are generally affordable, easy to find and install. Your transmission may enter the limp mode while you are pulling something heavy (especially with a steep incline).
What is the Allison Transmission part number for Duramax?
Neutral safety backup switch issues are another common Allison Transmission problem on the GM Duramax versions. If the D doesn’t light up on your gear indicator, this could be the issue. It is part number 29540479.
What kind of transmission does a GM Duramax use?
The PPE 128041000 Pressure Calibration Kit is an excellent upgrade when building the 5 or 6 speed Allison 1000 transmission in your 2001-2010 GM 6.6L Duramax. This calibration kit is recommended for applications that are making high horsepower and hauling heavy loads.
When did the LLY Duramax go to 6 speed?
It was mated to a 5-speed Allison Transmission in years 2004 and 2005. In 2006, the Allison Transmission was upgraded to a 6 speed. Although our LLY Duramax specifications chart above does mention the turbocharger found on these trucks, it doesn’t mention the fact that these are one of the largest turbochargers found on any Duramax today.
What kind of transmission dipstick does a GM Duramax use?
The GM 15794381 Transmission Dipstick is a direct replacement for the 2001-2007 GM 6.6L Duramax. This part is also commonly used on the 2007.5-2010 LMM models when a left hand dipstick tube is in use due to space restrictions with compound and custom turbo setups.
Neutral safety backup switch issues are another common Allison Transmission problem on the GM Duramax versions. If the D doesn’t light up on your gear indicator, this could be the issue. It is part number 29540479.
What kind of transmission does a Duramax diesel use?
It was the first to come bolted to the six-speed Allison transmission which provides a lower cruising RPM and greater fuel efficiency when compared to the five-speed on the LB7 and LLY.
What’s the problem with the Allison Transmission 1000?
What Might be Wrong with Your Transmission 1 Limp Mode (Allison 1000 Model) The Allison transmission 1000 model has a feature called “limp mode”, in which the… 2 Hooked Up Incorrectly It’s also possible that the transmission itself is just fine, but was installed incorrectly. If… 3 TCM Module Recall More
Are there any problems with the LLY Duramax?
In terms of LLY injector problems, GM had sorted out the internal failures with the 2004 ½ redesign, but the LLY Duramax would occasionally exhibit a trouble code for the injectors, but in most cases it turned out to be an issue with the injector harness rubbing through and causing a short or open in the wiring.