abbreviations and acronyms - Chevy and GMC Duramax Diesel Forum
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post #1 of 3 (permalink) Old 09-04-2009, 01:33 PM Thread Starter
deeretracks's Avatar
Join Date: Jan 2008
Location: Riverton,Kansas
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abbreviations and acronyms

BBIAB = Be back in a bit
BRB = Be right back
BTW = By the way
FWIW = For what it's worth
IIRC = If I Recall Correctly
IMHO = In my honest opinion OR In my Honest opinion
IMO = In my opinion
JMO = Just my opinion
LMAO = Laughing my A$$ Off
LOL = Laughing out loud
N/A = Not applicable, not available can also mean naturally aspirated
NFG = No F'n good
POS = Piece of S**t
ROFLMAO = Rolling on the Floor laughing my A$$ off.
TIA = Thanks in advance
TTYL = Talk to you later
TY = Thank you
YW = Your welcome

Truck Acronyms and abbreviations:

#1 = #1 Diesel Fuel (winter diesel fuel)
#2 = #2 Diesel Fuel
APP = Accelerator Pedal Position
BCM = Body control module. The module that controls various body related functions such as power windows, power locks, interior lights etc.
BOV = Blow off valve
CAC = Charge air cooler otherwise called Intercooler
CAT = catalytic converter
CC = Crew Cab
CEL = check engine light
CP3 = Duramax High pressure injection pump
CTD = Cummins Turbo Diesel
DA or D/A = Duramax and Allison combination
DHRA = Diesel Hot Rod association
DRL = Daytime running lights
DRW = Dual rear wheels
DTC = Diagnostic Trouble code
Dyno = Dynamometer
EC = Extended Cab
ECM = Engine control module
ECT = Engine Coolan Temperature
EGR = Exhaust Gas Recirculation
EGT = Exhaust Gas Temperature
G80 = Gm's RPO code for the rear locking differential in our truck
GN = Goose neck
HD = Heavy Duty
HP = Horsepower or High pressure
IAT = Intake Air Temperature
IC = Intercooler
IP = Injection pump
J/A = Edge Juice and Attitude
LB = Long Box
LP = Lift Pump or Low pressure
MAP = Manifold Absolute Pressure sensor
MAF= Mass Airflow sensor
MIL = Malfunction Indicator Lamp/Light
N20 = Nitrous Oxide
NA = Naturally Aspirated, can also mean not applicable or not available
NOS = Manufacturer of Nitrous Oxide systems (quite often mistaking used to describe Nitrous Oxide)
NSBU = Neutral safety backup sensor.
OBDII = Standard for diagnostic codes
Odo = Odometer
OEM = Original Equipment Manufacturer
PCV = Postive Crankcase Ventilation
PS = Power stroke or Power steering
PSD = Power stroke Diesel
PTO = Power take off
PYO = GM's RPO code for the aluminum wheels found on our trucks
QC = Quad Cab
RC = Regular Cab
RPO = Regular Production Options
RS = Remote start
RT = Reaction time
SB = Short Box
SES (light) = Service Engine Soon (light)
SRW = Single rear wheels
SS = Stainless steel
TC = Torque converter
TCM = Transmission control module
TIT = Turbine Inlet Temperature
Tech II = GM's tool used to test, diagnose and reprogram the various computers in our truck
VIN = Vehicle Identification Number or Serial number
VSS = Vehicle speed sensor
WG = Waste Gate
WIF = Water in Fuel
WOT = Wide open throttle
ZF = ZF Transmission - 6 speed manual transmission
RWHP = Rear wheel horsepower
ET = Elapsed time - total time it takes to run a 1/8 mile or 1/4 mile track. This doesn't not include the reaction time.

ABS - Anti-Lock Brake System
An anti-lock braking system, or ABS is a safety system which prevents the wheels on a motor vehicle from locking up (or ceasing to rotate) while braking.

CAI – Cold Air Intake
This is any number of devices and/or modifications to your intake intended to ensure you get cold air - i.e. air outside of the engine compartment - into your intake. The concept is that the colder the air, the better... since colder air is denser air.

CEL – Check Engine Light
Self-explanatory. See also SES.

C/K - The C/K is the name for Chevrolet and GMC's full-size pickup truck line from 1960 until 1999. C = 2 wheel drive, K= 4 wheel drive

Down Pipe
This is the exhaust pipe that runs from the back side of the turbocharger down to where the typical “turbo-back” pipe connects. This is also where the front pipe of the catalytic converter connects.

DIC - Drivers information center
Option that some trucks have that gives them access to MPG, Oil Life, Fuel Life, ETC

DPF - Diesel Particulate Filter
This is a device found on newer diesel trucks. The idea is this interesting little device will capture soot particles from the exhaust. Every so often, the DPF is supposed to enter a Regen cycle where additional fuel is used to burn off the soot captured within the DPF. Many refer to the device as the factory installed fuel mileage killer.

DPF Delete
Deleting the diesel particulate filter

DTC - Diagnostic Trouble Code
It's the "code" that comes when the Check Engine Light comes on. (There could be one, or many codes)

ECM - Engine Control Module
The main computer that controls engine functions.

EGR – Exhaust Gas Recirculation
The EGR is another emissions component. It is intended to recirculate exhaust gasses back into the intake to reburn them to help reduce pollutants. It is known for causing the accumulation of soot in the intake, which is why it is often blocked by a flat steel plate and unplugged.

FE9 – One of several Federal Emissions Standard models
FE9 models typically do not display CEL or SES warnings when EGR's are blocked, catalytic converters are removed, etc.

Finger Stick
An ingenious little device used to override error codes reported by the EGR, thus preventing a CEL or SES when the EGR is blocked.

FLM - Fuel Life Monitor
Same basic description of the OLM, but for the Fuel Filter.

HID - High Intensity Discharge
Light Bulbs & Ballast that have a much higher output than those of Halogen type lights.

Also referred to as a turbo mouthpiece, turbo mp… this is the last component of the air intake before the air goes into the turbocharger. Much discussion has taken place over the effects of enlarging or replacing the stock turbo mouthpiece on the LLY (second generation) Duramax engines.

NBS - New Body Style
Currently the latest generation body style trucks from General Motors.

OBD-II - On Board Diagnostics Version II
Standard on all cars after 1996. A generic port that allows DTC's to be read easily.

OBS - Old body style
Usually referred to as anything that is not "NBS".

OCI - Oil Change Intervals
Basically how often do you change your oil

OLM - Oil Life Monitor
Trucks equipped with the DIC can view their oil life as a percentage, the computer bases this off of many things, engine hours, etc.

PCV – Positive Crankcase Ventilation
This is one of several emissions components first introduced in the LLY (second generation) Duramax engines. The system allows ventilation of pressure within the valve covers. From the factory, the PCV is routed into an intake port in the turbo mouthpiece. Many guys reroute this to reduce the amount of oil that is sent into the intercooler system.

PID - Parameter Identification
Term used to describe a recordable vehicle identity, such as Oil Pressure, Transmission Temperature, etc.

PMD - Pump Mounted Driver
The PMD is the small black box the size of a deck of playing cards on the side of your injection pump. It is a signal amplifier that powers the fuel solenoid on your injection pump.

Pacific Performance Engineerings' hand held prgrammer (hot version)

The resonator is the black thing on top of your engine that says "6.6L". The resonator is supposed to make the engine run a little quieter. It is known to split on the seams, letting unfiltered air into the engine, which is why some people block it.

SES – Service Engine Soon
This is another check engine light/message. See also CEL.

Up Pipe
This is the exhaust pipe that runs from the exhaust manifold to the turbocharger.

UOA- Used Oil Analysis

WIF - Water in Fuel
A sensor that goes on the bottom of the fuel filter to detect Water in Diesel Fuel.


Last edited by theunderlord; 06-15-2010 at 01:57 PM. Reason: More info.
deeretracks is offline  
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post #2 of 3 (permalink) Old 03-24-2015, 12:02 AM
Join Date: Mar 2015
Posts: 1
Hi, I want to delete my emissions on my 04 LB7 Cali mod. They never manufactured a plate for the truck so how do I delete it. I'm just trying to get more the 15 mpg hank you.
KevinDmax is offline  
post #3 of 3 (permalink) Old 04-08-2015, 12:17 PM
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Posts: 45
Ccsb? Crew Cab, Short Bed

Last edited by jc1843; 01-23-2016 at 10:42 AM.
brandonstiles is offline  
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