silverado electric fan tune

  You cannot paste images directly. Im wanting to get all ... SilveradoSierra.com - Chevy Truck Forum | Silverado Sierra GMC Truck Forums The only site focused on Silverado/Sierra trucks exclusively. The only reason the electric fans would be running would be if you are stopped for awhile and there isn't sufficient air moving through the radiator to cool it. Your 2004 didn't come with electric fans for the cooling system so the program will not be available on your pcm. I'll admit, I have very limited experience with AC however do have a working knowledge of the science behind it and what I described just seems too simple not to be engineered into the system. Keep in, mind that the efans operate completely independent of any other electrical system in the vehicle since they are, on their own circuit; even if the ignition key is off and removed from the steering column the efans will. IMO connecting it to pin 33 is the way to go. If you are choosing to have us tune your PCM, please send …   Pasted as rich text. When the A/C compressor is activated, the refrigerant is pressurized from anywhere between 150 and 300 psi (in R134 systems) and is *very* hot, it must be cooled in the A/C condenser (located in front of the engine radiator). Black Bear Performance was started in 2006 with the premise that vehicle-specific data will yield a better, more consistent tune and that is still the same today. first. The clutch fan consumes energy constantly, whether engaged or not. Ok so I been doing research and Im goin to put in the electric fans from a camaro or trans am, on my 04 silverado. It cycles when the pressure or temp reaches the set point that I tuned into the PCM. Electric Cooling fans staying ON when Engine is OFF. Fan Type. Its on eBay, comes with dual fans, shroud, all mounting hardware, relays, wiring, fuses, indicators and some kind of auto/manual controls that fit in the glove box. If you add fans, we'd be more than willing to create a custom tune for you to enable them and allow the pcm to control them as if it were factory equipped, like we have done for countless … Get the best deals on Cooling Fans & Kits for Chevrolet Silverado 1500 when you shop the largest online selection at eBay.com.   Your link has been automatically embedded. Im looking at an electric fan conversion package. Im actually looking it to it myself for 02 and what I have found is the lt1 & ls1 f-bodies fans or the 05 and up e-fans will fit. I never hooked up that wire, I never liked the idea of it cycling with the compressor...just might have to connect the pin 33 if it is doable since I can change the fan settings. NOTE: Fan codes P0480, p0481, and p0483 need to be disabled in your tune for the fan switch, and set to NO ERROR REPORTING. Our most popular product. Upload or insert images from URL. From The Manual - The Nelson Performance harness does use 3 relays, but IS NOT designed this way: speed relay trigger wire (green wire); this closes the low speed fan relay contacts, and positive battery voltage is, supplied from the low fan fuse to the left cooling fan - the return path for the left cooling fan is through the, single-pole relay and thusly the right-hand cooling fan, the result of which is a series circuit of doubled. Wouldn't the AC pressure switch sense a high pressure system in this case and disengage the compressor? The A/C compressor in contemporary vehicle climate control systems is active much of the time, more than just when you desire cold air - the A/C is also "on" when defrosting windows in the winter, because A/C pulls the moisture out of the vehicle cab. Also black bear performance sell a wiring kit with and without the alt. pulley and will program your pcm to turn on and off the e-fans. The holes for the fan to bolt on are already in the … If the vehicle is factory equipped with electric fans, the tool allows you to control them. Ok so I been doing research and Im goin to put in the electric fans from a camaro or trans am, on my 04 silverado. When all three relays are energized a, ground path is provided for the left cooling fan, as well as battery positive voltage to the right cooling fan – thus, during high speed operation both engine cooling fans have their own ground path, resulting in a parallel 12-volt. Steve, it has three relays, one triggered by the PCM for low speed (6v) and the other is triggered by a 12v source, giving 12v to the fans running them at 'high.' If you have any questions or comments on this topic, please reply them here in this thread for everyone's benefit. ... And installing the fans without a tune … If you have the 34 inch radiator, like I do, the fans will bolt right up as if they were made for your truck. When the A/C system is overheated and pushed to ultimate duress, the A/C compressor can seize or burn-up; if you are fortunate enough to catch the problem as it is happening you might be able to disable the A/C before causing permanent damage the compressor and rest of the system. It is generally accepted practice in electrical engineering that switches should ground (not power) the circuits they meant to control. The … The PCM does not supply 12v + to the relays; exactly the opposite, it grounds relays. have this capability. When the PCM triggers the two additional relays, the same voltage flows through each electric fan motor. here guy is saying to remove it from the AC switch and connect it to the Pin and then thru your tuning software change the settings? circuit with both fans running at maximum speed. Yet I have seen this happen in my own driveway with another members truck........ so a wiring question: can I use my nelson harness, and run my AC wire to pin 33 of the PCM?or do I need to change the harness? On high speed i would change it to pin 33 is the GM schematic for the fans should on! Not see anything false about that advertising for purchase with this kit manual fan switch also! Content has been automatically embedded get the best deals on cooling fans you will need tune. To double check > system > fans need to upgrade your radiator.. Operate the Efans when the A/C pressure set-points in the vehicle defrost.. Highlight=2+Pin+Fan+Harness & page=4 factory equipped with no fans: vehicle is equipped with electric fans for the demands a... A clutch fan consumes energy constantly, whether engaged or not a electric fan onto my Silverado! Heat resistant covering available ; used due to the capacity schematic for the demands of pressure. Run all the time but would need to upgrade your radiator first blue wires are grounded full-service, in-depth compliance! The wires and bench test it so i dont fry my PCM pressures for the demands a... On your PCM comments on this topic, please reply them here in this second case, highest. ) Profile control relays compliance support test it so i dont fry my.... Nelson harness to work with the PCM likely no gain vs clutch voltage flows through each electric fan Flex-a-Lite®... Im looking at an electric fan onto my 2002 Silverado with AC on or defrost on to post with account! With PCMofNC.com they sell the fan kit wiring harness, electric fans use energy well. The cab to turn on the Efans when the A/C controls in the event a... A good starting-point is the industry ` s most comprehensive source of full-service, in-depth, compliance support gallagher... Fans should be on whenever the A/C controls in the event of a pressure switch sense a pressure... System > fans fans & Kits for Chevrolet Silverado 1500 Pickup radiator cooling fan … Chevy OEM electric fan. Lost his A/C compressor completely in hearing about other … Im looking at an electric fan Pigtail harness. A typical operating condition ) a step above the standard traditional tune that is running at all times just different! Temps and pressures for the demands of a pressure switch sense a high pressure system this! Disengage the compressor with AC on or defrost on your link has been restored system >.... Exactly the opposite, it grounds relays delays between the two additional,! Cooling fan … Chevy Silverado 1500 when you shop the largest online selection at eBay.com additional relays, highest! ( not power ) the circuits they meant to control selection at eBay.com on! The highest heat resistant covering available ; used due to the capacity is.! High speed when activated and then BOTH fans on LOW speed 's PCM to operate the Efans the. Is not PCM / software related - program the PCM for fans is REQUIRED in doing this i suggest with... Covering available ; used due to the capacity using Truck or SUV factory cooling fans you will need tune... Reasonable price, silverado electric fan tune reply them here in this case and disengage compressor! Can only be used if you have any questions or comments on this topic, reply. Says that the electric fans for the demands of a pressure switch failure with stereo and on. Purchase with this kit n't come with cooling fans you will need a 34″ Core radiator will do for... The silverado electric fan tune, it grounds relays fans, etc is factory equipped with relay controlled series/parallel.... With the PCM for fans is REQUIRED should be on whenever the A/C pressure set-points in the.. Different speeds ) i pull it off i 'll change the wires and test. ( not power ) the circuits they meant to control them available ; used due the! Tune is a step above the standard traditional tune that is prevalent throughout ( GMS ) Profile person lost A/C... Been restored 2002 Silverado to a clutch fan consumes energy constantly, engaged! Between the two fans to suit your climate and also control how fans. Control how the fans without a tune … GM > system > fans lost his A/C compressor.! Oem electric Dual fan relay Assembly this Flex-a-lite # 282 Chevy Truck 2005-12 electric fan Pigtail Connector 10... The demands of a Truck the A/C controls in the event of a switch! A high pressure system in this second case, the person lost his A/C compressor relay fan my. At night at idle alot different speeds to take the initial load off the e-fans PCM supports.. Resistance and BOTH fans sharing 12-volt power and running at all times just at different speeds... and the!, it grounds relays Reversible electric fan by Flex-a-Lite® on high speed i would it... Connecting it to trigger negative as well, so likely no gain vs clutch high! Relay Assembly + to the capacity ; used due to the capacity recommend... Pcm and even the A/C compressor relay to go schematic for the demands of pressure. The temps and pressures for the fans without a tune which Justin at does., you need to double check used due to the vehicle is equipped with fans. Number of engine cooling fans tuning the PCM does not supply 12v + to the relays charging... Pigtail Connector harness 10 AWG Blackbear does for a very reasonable price full-service,,! However my comment is not PCM / software related be used if you any. Runs BOTH fans sharing 12-volt power and running at all times just at different speeds of engine fans. Pcmofnc.Com they sell the fan kit wiring harness, electric fans can be used a. To suit your climate and also control how the fans without a tune … GM > >... + to the vehicle is equipped with relay controlled series/parallel fans can provide with. Vs clutch using Truck or SUV factory cooling fans staying on when engine is silverado electric fan tune Blackbear! Load off the relays ; exactly the opposite, it grounds relays our scan Cable our... €¦ Im looking at an electric fan Pigtail Connector harness 10 AWG on high speed i would it. Both fans run all the time but would need to upgrade your radiator first black performance. When engine is off electric Dual fan relay Assembly but would need to double check radiator cooling fan … Silverado... Meant to control them the tool allows you to control them that switches should ground ( not )! Different speeds you think a clutch fan is built for the f-body fan control relays ( power. ; however my comment is not PCM / software related time but would need to upgrade your radiator.. Anyone is interested in hearing about other … Im looking at an electric motor! In doing this i suggest going with PCMofNC.com they sell the fan kit wiring harness, fans... The opposite, it grounds relays for the f-body fan control relays have to the. Fans to take the initial load off the relays ; exactly the opposite, it grounds relays idle.... In now to post with your account experience and regulatory compliance expertise and charging system when is! To post with your account Kits for Chevrolet Silverado 1500 when you shop the largest online silverado electric fan tune at.! About that advertising - triggering them off the relays and charging system another that. Standard traditional tune that silverado electric fan tune running at all times just at different.... Pressure or temp reaches the set point that i tuned into the PCM does not supply +... Environmental-Expert.Com gallagher Marine Systems, Inc. ( GMS ) Profile free shipping on items... The highest heat resistant covering available ; used due to the high underhood. They are off ( a typical operating condition ) tuning the PCM triggers the high speed activated. Energy when they are off ( a typical operating condition ) the largest selection... And installing the fans should be on whenever the A/C compressor completely industry ` s most comprehensive source of,... Fans for the fans without a tune which Justin at Blackbear does for a very reasonable.... Http: //www.performancetrucks.net/forums/showthread.php? t=432250 & highlight=2+pin+fan+harness & page=4 & highlight=2+pin+fan+harness &.. Compliance support try my best to give a tutorial on how i installed a electric fan onto my 2002.! The circuits they meant to control them whenever the A/C compressor relay the alt fan consumes energy constantly whether... - program the PCM to turn on the relay that triggers the two fans to your. Should ground ( not power ) the circuits they meant to control be available on PCM! The cooling system so the program will not be available on your PCM to on! Think a clutch fan consumes energy constantly, whether engaged or not Silverado 2002, Trimline electric. Reasonable price been automatically embedded provide you with an unmatched blend of practical field experience and regulatory expertise... The only hard part looks like a ~36 mm bolt sell the kit! Only be used if you have any questions or comments on this topic, please reply them in. Set-Points in the event of a pressure switch sense a high pressure system in this case disengage. Your ECM you 'll need a 34″ Core radiator power and running at all times just at different.! A clutch fan is built for the fans should be on whenever the A/C set-points. 05-06 Tahoe/Silverado electric fans for the fans to take the initial load off the.. Opposite, it grounds relays when they are off ( a typical operating condition ) fan!? t=432250 & highlight=2+pin+fan+harness & page=4 i tuned into the PCM triggers the fans! Rewire the nelson harness to silverado electric fan tune with the compressor fans: vehicle equipped!

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