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Well I've been looking everywhere I can to find a manual transmission with OS:12202088 or I can update with TIS to OS:12208322 so I can do a segment swap with no luck. Compared the abuse setting to...

Hey guys.

I got a buddy dropping an engine from a 01 truck into an older vehicle. Donor truck had a 4L80, new one is using a manual trans. Problem is it won't rev past 1400rpm. Checking...

According to SI it should have a 2 wire switch on the accumulator, and a 3 wire sensor on the high pressure line right beside the rad. If it doesn't, and you don't have EGR, you might be able to feed...

2002 and previous trucks use a 2 wire low pressure cycling switch. Its an on/off signal and won't work for wideband. On my 01 Sierra I added a pin to C2 (red) terminal 14 and used the A/C volts...

Thanks guys. I suspected it would work, just being cautious. Wasn't sure if it was 6L or 2500 that made the difference.

I noticed the lean cruise is in the file and another one I was working...

A coworker of my wants to put E-Fans on his 05 Sierra 2500. Just want to make sure its as simple as enabling them in the tune before we get started. E-fans started on 05 so I suspect so but for...

The transmission control module is inside the transmission on those. Replacing the transmission means replacing the module. The module needs to be programed when installed, hence the P0602. I'm...

Acording to service information a 2013 sierra still uses a virtual sensor. A bad maf can throw it off. A co worker of mine added a cold air intake to his 2011 truck without any programing and it...

2WD or 4WD? Spec on Express VSS is 1377–3355 Ω, spec on S10 VSS are 1,377–3,355 Ω (2WD), 976–2,354 Ω (4WD)

HA. That sounds about right. Oddities always seem to find me.

Guess I got some more thinking to do. Thanks for the info.

On a 2002 Express, SI says P1665 is for fuel gauge circuit. From the schematic it appears the PCM PWM the ground side of the guage at C2 pin 38. "The PCM sets this DTC if the fuel level signal...

That's the info I'm looking for. I have a 12200411 in my 01 beater, could just swap the PCMs and tune both. So OS 12212156 does work with fans. If using A/C, fan 1 comes on with A/C request and...

Yes, yes you did. I guess I just didn't want to believe it.


Tried, no change. Thanks.


The A/C system is not fully assembled or charged so the factory truck A/C switches are disconnected....

Well winter was a lot busier than expected. :) So after this conversation I licensed the original file from the truck, turned off VATS and some other codes. It starts, can move it around the shop...

Straight off the auto carrier.
39785

It was slow one day while doing pre delivery inspections so I grabbed a few different ones of these. They were read with a beta before they were fully supported but I suspect the files should still...

Perfect thank you. This one is still old enough to have a dedicated A/C request circuit.

Thanks guys. I didn't want to get it all set up and then have to rewire everything, or license 10 different calibrations to find one that works.

Montecarlodrag does it work for A/C too or do...

No one has any thoughts on this? Finally got my device and would like to get started. First few threads I read on here were about fans not working properly with trucks PCMs. Is that the norm or...

Hello, new to HPTuners. I've been doing a bunch of reading on here, and it seems for every question I figure out I get 2 new ones. :)

The project is taking a 4.8L/4L60/harness/PCM from a 2000...