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Any one have any ideas?

The harness is good

Sorry, I'm new to this its a 2002 silverado all stock A/C. It has the stock 2 wire pressure switch. Do I need to upgrad it to the 2004 & up pressure sensor?

So, after swapping to Eletric I can activate them through the scanner with no problem. They come on at temp at low speed but, when I turn on the A/C the high-speed fan does not come on it stays at...

Are the ones I posted any good? They will come with the injector data for hptuners.

96624

I think I'm going to use different Injectors. I've been looking at the FIC1450 their priced well and they come with the data for HPT.

So I had an Fitech 105mm truck intake and throttle body laying around the shop so I decided to put it on my truck. The truck is stock except for Texas speed 224r cam with 660 springs and the intake....

Ok got you now I do have the high pressure spring, and again thank for helping

Ok you lost on your first sentence about the internal regular. All I'm using from fitech is the sheetmetal intake102 throttle body, fuel rails and Injectors and a aeromotive regulator return...

Thank you I am using a 1.1 reference regular

So I have an fitech truck intake with 55lb Injectors laying around the shop. I have decided to put it on my truck, which is a 5.3 with a texas speed 224r cam. Can someone give me sone input I am new...

I picked up an ECM for 20.00 i just retuned it I have the unlimited gen 3 group. Working fine now.

I was doing an entire write when to update OS when htpuner encountered an error and shut down. Now it will not read or write to the truck and the truck will not start any ideas. Its 2000 Silverado 5.3