User guide
96815 v.3.0 29
If the Six-Gun Diesel Tuner has been 
moved to a different vehicle, or you 
are instructed to do so by Banks 
Technical Staff, it is possible to reset 
all of the parameters that the Six-Gun 
has ‘learned’ - presence of an EGT 
thermocouple or Speed-Loader, etc. 
CAUTION: The following procedures 
can only be carried out with the 
engine OFF!
1. Turn the vehicle key to ON but DO 
NOT start the engine.
2. Fully depress the throttle pedal and 
then release it completely. Repeat 5 
times. The GREEN LED will flash when 
this is completed successfully.
3. Turn the key OFF. Wait 30 seconds, 
or until the GREEN LED goes off and 
stays off. Turn the key back to the ON 
position but DO NOT start the engine. 
4. Fully depress the throttle pedal and 
then release it completely. Repeat 5 
times.
-END, SECTION 8-
Section 8
CLEARING LEARNED INFORMATION
• The GREEN LED will flash if all wire 
connections are correct, the engine 
is running, but the engine coolant 
temperature is not within its normal 
operating range. The GREEN LED will 
stop flashing once the engine coolant 
temperature is within its normal 
operating range (not to be confused 
with Speed-Loader flash on power-up).
• No LEDs will illuminate if the fuse 
on the Six-Gun wiring harness is 
blown or the wiring harness is not 
properly connected. If the fuse and all 
connections are okay, contact Banks 
Technical Service.
• The RED LED will flash in a certain 
sequence if a connection is incorrect 
of if there is a problem with the 
system – this sequence will identify 
one or more diagnostic codes. A Six-
Gun Diesel Tuner’s diagnostic code 
is comprised of 2 digits. Each code 
is expressed in a sequence of 2 sets 
of the flashing red LED separated by 
a brief flashing of the green LED in 
between. Each set of a number of red 
LED flashes represents a digit. A longer 
flashing of the green LED separates 
the sequences. The LEDs will continue 
to flash to display all the errors, and 
then repeat. Table 1 lists the common 
diagnostic codes. For example, if a 
faulty thermocouple is detected (code 
“2,3”) by the Six-Gun Diesel Tuner, the 
following red and green LED flashing 
sequence is observed when the key 
is on: 
(1) Two times flashing RED LED
(2) One time quick flashing GREEN LED
(3) Three times flashing RED LED
(4) One time longer flashing GREEN 
LED
The above flashing sequence will 
repeat continuously. When the 
problem is corrected, the diagnostic 
code will be eliminated and replaced 
by a steady green light. If problem 
persists, contact Banks Technical 
Service.
NOTE: If multiple codes are set, they will 
be displayed in a series separated by the 
longer flashing green LED. When reading 
codes, make sure to watch the entire 
series until you see the first code repeat. 
-END, SECTION 7-










