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Just sent off my pcm to pcmforless to add a little performance to the 2500hd 6.0.

 

Question:  When I get the pcm back are you required to unhook the battery b4 reinstalling the pc  or can u just plug and play?????  :thumbs:

 

 

 

 

 

When ever you mess with anything electronic, you should unhook the battery.

 

Make sure you tell us about how much you like it.

 

I'm this close [ ] to my wife letting me get a PCM4less.

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Just sent off my pcm to pcmforless to add a little performance to the 2500hd 6.0.

 

Question:  When I get the pcm back are you required to unhook the battery b4 reinstalling the pc  or can u just plug and play?????  :thumbs:

 

 

 

Man I don't know for sure but when I removed my PCM from my Trans Am I disconnected the battery. Just to be safe. Have you ever plugged in or unplugged an item left turned on. You get a spark as the plug comes out or goes in the outlet because the item is in a hot state. I would tend to think this could cause an electrical surge of some sort. NOT a good thing when it comes to computers and that is what a PCM is. As far as my 2003 Sierra. I took it to a guy from Warsaw, Indiana. The whole truck. And he just plugged into the diagnostic port with his laptop and cloned the factory program and saved it, just in case. Then he took the program and started rewriting everything. He changed about everything you can think of. I thought the truck was a strong pulling truck before, man was a mistaken! I went to Florida pulling a 10,000 car trailer. Took the same trip last year. Thought I was in a different truck this year. He changed torque management and engine timing. Throttle position and all kinds of stuff. The truck used to get about 10.5 mpg from oil change to oil change. This is an an average of city and interstate driving. 75% city or country roads and 25% highway. I do not baby the gas pedal. When I want to go I go. Now the truck gets 12.5 mpg.

2500HD crew cab

short bed

8.1

allison 5 speed and 3.73 gears with 4x4

The best part, the cost for the programming $75.00

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Just sent off my pcm to pcmforless to add a little performance to the 2500hd 6.0.

 

Question:   When I get the pcm back are you required to unhook the battery b4 reinstalling the pc  or can u just plug and play?????  :thumbs:

 

 

 

Man I don't know for sure but when I removed my PCM from my Trans Am I disconnected the battery. Just to be safe. Have you ever plugged in or unplugged an item left turned on. You get a spark as the plug comes out or goes in the outlet because the item is in a hot state. I would tend to think this could cause an electrical surge of some sort. NOT a good thing when it comes to computers and that is what a PCM is. As far as my 2003 Sierra. I took it to a guy from Warsaw, Indiana. The whole truck. And he just plugged into the diagnostic port with his laptop and cloned the factory program and saved it, just in case. Then he took the program and started rewriting everything. He changed about everything you can think of. I thought the truck was a strong pulling truck before, man was a mistaken! I went to Florida pulling a 10,000 car trailer. Took the same trip last year. Thought I was in a different truck this year. He changed torque management and engine timing. Throttle position and all kinds of stuff. The truck used to get about 10.5 mpg from oil change to oil change. This is an an average of city and interstate driving. 75% city or country roads and 25% highway. I do not baby the gas pedal. When I want to go I go. Now the truck gets 12.5 mpg.

2500HD crew cab

short bed

8.1

allison 5 speed and 3.73 gears with 4x4

The best part, the cost for the programming $75.00

 

 

 

 

 

 

 

 

Im getting about 10.7 right now 50%hwy 50% in town hope this helps it out

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Just sent off my pcm to pcmforless to add a little performance to the 2500hd 6.0.

 

Question:   When I get the pcm back are you required to unhook the battery b4 reinstalling the pc  or can u just plug and play?????  :thumbs:

 

 

 

Man I don't know for sure but when I removed my PCM from my Trans Am I disconnected the battery. Just to be safe. Have you ever plugged in or unplugged an item left turned on. You get a spark as the plug comes out or goes in the outlet because the item is in a hot state. I would tend to think this could cause an electrical surge of some sort. NOT a good thing when it comes to computers and that is what a PCM is. As far as my 2003 Sierra. I took it to a guy from Warsaw, Indiana. The whole truck. And he just plugged into the diagnostic port with his laptop and cloned the factory program and saved it, just in case. Then he took the program and started rewriting everything. He changed about everything you can think of. I thought the truck was a strong pulling truck before, man was a mistaken! I went to Florida pulling a 10,000 car trailer. Took the same trip last year. Thought I was in a different truck this year. He changed torque management and engine timing. Throttle position and all kinds of stuff. The truck used to get about 10.5 mpg from oil change to oil change. This is an an average of city and interstate driving. 75% city or country roads and 25% highway. I do not baby the gas pedal. When I want to go I go. Now the truck gets 12.5 mpg.

2500HD crew cab

short bed

8.1

allison 5 speed and 3.73 gears with 4x4

The best part, the cost for the programming $75.00

 

 

 

 

 

 

 

 

Im getting about 10.7 right now 50%hwy 50% in town hope this helps it out

 

 

 

 

 

I will definately let everyone know how the new program works just as soon as i can test it out ---although now that i think of it, I remember others with this new program have said they had to drive the truck for awhile b4 they got the full effect of the changes because the puter has a learning curve getting used to how u drive

 

 

Anybody know how long it takes ???????

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How much ($) was your PCM? What type of settings did you go with?

 

 

 

 

 

They have a sheet u fill out asking what if any mods have u made so far on truck and I requested to have truck setup for pulling travel trailer 7000lbs. I already have flowmaster dual exhaust out the rear of truck. Thats it for performance mods. Im sure they will reduce the torque management. I changed tires to

285 75/r16 so that change will be made to correct any speedometer issues.

Maybe some changes to air fuel mixture and timing. I did change out the thermostat to a 160. The charge for pcm was $250

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You'll be amazed! Mine was great right from the start, but is getting slightly better the more I drive it. It's like night and day difference. Bryan knows his stuff with theese trucks.

 

I went from 11.5mpg with my 285's to 12.5 now with the tune. Plus I'm sure my accelerations are a bit harder since I enjoy the power I've got now.

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You'll be amazed!  Mine was great right from the start, but is getting slightly better the more I drive it.  It's like night and day difference.  Bryan knows his stuff with theese trucks.

 

I went from 11.5mpg with my 285's to 12.5 now with the tune.  Plus I'm sure my accelerations are a bit harder since I enjoy the power I've got now.

 

 

 

 

 

Excellent I cant wait They should have gotten my pcm today

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Nah, not really.

 

I've recently discovered the secret to them there 'lectronics. And here it is: They're full of smoke.

 

Whatever you do, don't let the smoke out of them. They can't function without the smoke inside.

 

I'm working on a way to actually put smoke back IN there, and when I figure it out....I'll be a rich, rich man.

 

 

 

 

:D

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Nah, not really.

 

I've recently discovered the secret to them there 'lectronics. And here it is: They're full of smoke.

 

Whatever you do, don't let the smoke out of them. They can't function without the smoke inside.

 

I'm working on a way to actually put smoke back IN there, and when I figure it out....I'll be a rich, rich man.

 

 

 

 

:D

 

 

 

 

 

Dems not smoke Dems (GREMLINSSSSSS!!!!!!) :):chevy:

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