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Includes all the parts you need to do the job on a Kennedy twin pump install: Kennedy Twin Pumps, stainless mounting bracket, Lift Pump Control Harness, and 1/2" Plumbing Kit. Fits LB7, LLY, LBZ, LMM and uses the standard 1/2" fuel pickup which does not require removal of the tank on a typical installation. Includes the push connect hose fittings to make installation a snap.

Kennedy Lift Pump Installation Instructions

Kit contents specific to 2011-2016 LML

Includes all the parts you need to do the job on a Kennedy twin pump install: Kennedy Twin Pumps, stainless mounting bracket, Lift Pump Control Harness, and 1/2" Plumbing Kit. Fits LML and uses the standard 1/2" fuel pickup which does not require removal of the tank on a typical installation. Includes the push connect fuel hose fittings to make install a snap.

Kennedy Lift Pump Installation Instructions

Includes all the parts you need to do the job on a Kennedy single pump install: Kennedy Lift Pump, stainless mounting bracket, Lift Pump Control Harness, and 1/2" Plumbing Kit. Fits LB7, LLY, LBZ, and LMM and uses the standard 1/2" fuel pickup which does not require removal of the tank on a typical installation.

Kennedy Lift Pump Installation Instructions

Includes all the parts you need to do the job on a Kennedy single pump install: Kennedy Lift Pump, stainless mounting bracket, Lift Pump Control Harness, and 1/2" Plumbing Kit. Fits LML trucks and uses the standard 1/2" fuel pickup which does not require removal of the tank on a typical installation.

Kennedy Lift Pump Installation Instructions

Kennedy Custom ECM programming pre-loaded onto an Autocal handheld tuner. Allows easy loading of tunes. Also includes a stock backup file of the vehicle original tune.

"Both my 2012 and my 2016 trucks are running Kennedy Custom ECM programming with all emissions equipment intact. Response is greatly improved and I routinely see 20+ mpg in mixed driving. -JK

All tunes are built as dual mode switchable but as these vehicles age I recommend not adding a switch. The tuning will default to the lower HP level which should be plenty safe for a stock transmission. The higher HP will push the limits of the stock transmission. Typical tune sets are 50 HP econ/tow and 80 HP performance tune. While I make no claims or promises, the 50HP economy tune has been producing very consistent economy numbers at around 19-20mpg and even higher for single rear wheel trucks. DSP2 switch sold separately.

Installation Instructions and Product Review

"This item requires your ECM be sent in OR exchange ECM can be provided." - JK

Dyno Plot

Race Dyno Plot

When comparing dyno numbers, please note that my dyno plots do NOT use correction factors. These are no BS dyno runs with no inflation to make sales. -JK

Tunes available to produce anywhere from 40HP economy/tow, 70HP Perf tow and more. While economy gains cannot be guaranteed, the economy tune has been producing very consistent mpg numbers at around 19-20mpg and sometimes more for single wheel trucks. Smooth shifting, low EGT's and more power/response than many 80 and 100HP rated generic tunes.

Installation Instructions

All tunes are built as dual mode switchable but as these vehicles age I recommend not adding a switch. The tuning will default to the lower HP level which should be plenty safe for a stock transmission. The higher HP will push the limits of the stock transmission. Typical tune sets are 50 HP econ/tow and 100 HP performance tune. DSP2 switch sold separately.

LB7 Installation Instructions and Product Review

"This item requires an exchange ECM or we can provide one for an additional charge. Please see listings below." - JK

Performance Tune Dyno Plot

When comparing dyno numbers, please note that my dyno plots do NOT use correction factors. These are no BS dyno runs with no inflation to make sales. -JK

Single level tuning for the Duramax LMM. Tunes available to produce anywhere from 40HP economy/tow, 70HP Perf tow and more. While economy gains cannot be guaranteed, the economy tune has been producing very consistent mpg numbers at around 19-20mpg and sometimes more for single wheel trucks. Smooth shifting, low EGT's and more power/response than many 80 and 100HP rated generic tunes.

Installation Instructions

Tunes available to produce up to 150-200RWHP gains while still remaining tame enough to act as a daily driver. Smooth shifting, lower EGT's, and more power/response than many higher claimed generic tunes.

Installation Instructions

Brand new AC Delco TCM pre programmed to your VIN. Just install and go.

Requires core shipped in advance.

Please note: I did not diagnose your truck. If the new unit does the same thing as the old unit then it's a misdiagnosis, but the transaction is final as there are no returns on electronics once installed.

We keep these in stock and program to your VIN so you can just drop in and go.

Brand new OEM Allison TCM programmed with your stock file based in VIN. Plug and play installation. This model fits 2009-2010 LMM and 2011-2014 LML that were equipped with the A50/T14 TCM module. Please verify this by checking the numbers laser engraved on your module. Please include model year and VIN in your order notes when you order. 

Matching core return required.

Please note: I did not diagnose your truck. If the new unit does the same thing as the old unit then it's a misdiagnosis, but the transaction is final as there are no returns on electronics once installed.

The new units WILL NOT work in the Kodiak medium duty trucks. The proper software has never been developed by GM.

Please note: I did not diagnose your truck. If the new unit does the same thing as the old unit then it's a misdiagnosis, but the transaction is final as there are no returns on electronics once installed.

Used replacement model A40 TCM module for the 6 speed Allison transmissions in LBZ and LMM trucks from 2006-2008. Programmed to your VIN and stock calibration.  30 day replacement warranty.

The 2009-2010 LMM and 2011-2014 LML trucks used the A50/T14 module. Please be sure to check what your vehicle has in it. It is etched into the case in very fine detail.

These things used to be commonly available, but suddenly in short supply so the price has gone nuts. Standard pickups and vans should use the NEW units. Kodiaks cannot use the new ones so we save the used ones for those vehicles. -JK

If you do plan to return your ECM core but need us to supply you with a loaner, please select this item. We can also program the ECM to any factory calibration if necessary. This item available for purchase ONLY with Kennedy Custom Tuning and is not available for individual outright sale. Core must be returned within 15 days unless other arrangements are made or it will be billed as non refundable. ECM core exchanges MUST be in proper working order and must be returned within 15 days (unless other arrangements are made) or it will be billed as non refundable.
Please note: If core deposit only is selected any future updates will require that the ECM be sent to us for the update.

If you do not plan to return your ECM core please select this item. We can also program any ECM to your factory calibration if necessary. This item available for purchase ONLY with Kennedy Custom Tuning and is not available for individual outright sale.