Pre 2007 (gmt800) Vs. 2007+ (gmt900) Trucks

[jtice]

I am in the market for a truck and have been driving myself crazy over what to get.

At first I was looking at some nice 04 to 06 (GMT800) Chevy or GMC Crew Cab 1500s, decked out for about $16K

But the more I look at the newly redesigned 2007+ (GMT900) trucks, the more I like them.

But, they are getting a bit out of my budget. I am finding ones alittle less equipped, and slightly higher mileage, for about $18 to $20K

 

So, I need schooled on everything they changed with the newly designed GMT900 trucks.

Here are some of my main questions, but any other input would be greatly appreciated. no detail too small.

- I want the 5.3L no matter what year I get, and I see that its up on HP alitte, but are all the GMT900 trucks using the new Fuel Management/ Cylinder Shutoff? and if so, how much is that really mattering?

- Are the GMT900 trucks more, or less fuel efficient?

- I know the GMT900 has an all new suspension and frame, How does the ride quality compare?

- Is the 4 spd auto tranny the same in them? Not seeing many at all equipped with the 6 spd, least not in my price range.

- Anything you guys DONT like about the GMT900 models compared to the GMT800?

 

Thanks alot guys,

~John

[Stevens03]

I am in the market for a truck and have been driving myself crazy over what to get.

At first I was looking at some nice 04 to 06 (GMT800) Chevy or GMC Crew Cab 1500s, decked out for about $16K

But the more I look at the newly redesigned 2007+ (GMT900) trucks, the more I like them.

But, they are getting a bit out of my budget. I am finding ones alittle less equipped, and slightly higher mileage, for about $18 to $20K

 

So, I need schooled on everything they changed with the newly designed GMT900 trucks.

Here are some of my main questions, but any other input would be greatly appreciated. no detail too small.

- I want the 5.3L no matter what year I get, and I see that its up on HP alitte, but are all the GMT900 trucks using the new Fuel Management/ Cylinder Shutoff? and if so, how much is that really mattering?

- Are the GMT900 trucks more, or less fuel efficient?

- I know the GMT900 has an all new suspension and frame, How does the ride quality compare?

- Is the 4 spd auto tranny the same in them? Not seeing many at all equipped with the 6 spd, least not in my price range.

- Anything you guys DONT like about the GMT900 models compared to the GMT800?

 

Thanks alot guys,

~John

 

Obviously you know the suspension and frame are different and in my opinion, the GMT-900's are much smoother and handle a load much better than my previous truck (gmt-800). One big thing I noticed between the 2 styles of 4x4 was the seamless/smoothness of the 4x4 system. AWD feature is just seamless.

 

The 4-speed compared to the 6-speed is open for debate on what you like more. Generally you'll get better economy with the 6-speed apposed to the 4-speed because you have more gear choices but with that said, it shifts ALOT more. Several people claim it's seamless.

 

The AFM doesn't really help that much if any at all. It just doesn't stay in v4 mode long enough to make a difference. Many actually have it turned off when they get a custom tune.

 

Really there's nothing I don't like about my truck. It was exactly what I wanted

[jblakeney]

Do you want AFM? If so get a GMT900.... Edgewise.... GMT800....

 

Jbo

[441G]

I've had both- a nice low mileage gmt800 would do me fine.

[bluegmctruck]

if you decide that you want the 6 speed trans they did not come out until the 08 model. if you get the nbs 07 it will still have a 4 speed

[music]

if you decide that you want the 6 speed trans they did not come out until the 09 model.

 

Fixed. The Crew Cab 5.3 got the 6-spd starting 2009.

[clemsonblozz]

I love my 800..

[98 Z71 SLT]

Start out with a 800-series.

 

Go for 2005-2007 800 series; these were the BEST ones. Rear drum brakes,electric fans

 

I have owned the following years of GM trucks: 1988,1991,1993,1994,1995,1998,2000,2001,2002,2004,2006,2008,2010 All of them Sierra's and Silverado's.

 

I miss my 2006 Sierra the most out of all of them...

[coleman62]

I love my 07. I had a 2004 before this. Both sierras and both z71. I like the 4x4 on the 900's better personally. I just feel like it has more grab than the 800 did. AFM, like previously posted, doesn't seem to change much. On the interstate it can but it seems like i have to be doing under 70 before it will stay in v4 for any amount of time. i plan on getting a black bear tune in the coming months and having it turned off. Good luck on your new ride and post pic's when you get it

[RyanbabZ71]

I had a 2000 and now have a 2010

 

My opinion GMT900 > GMT800

 

There are minor things I like more about the 800 (cargo light, push button 4wd vs knob, more comfy seats) and there are some major things I like more about the 900 (usb port, 6.2L V-8, 6 speed trans, ride).

[clemsonblozz]

my 800 has a manual t-case..

 

 

 

I dig my rear disc!

[RyanbabZ71]

I dig my rear disc!

 

So do I on my GMT900

[jblakeney]

I love my GMT-800..... drum brakes blah blah.... disc are the way to go. I like my manual fan clutch, electric fans are tooooo loud at idle for my taste...

 

Transfer cases should have a shifter poked up in the floor. Period end of story.... buttons, knobs , etc, etc belongs in the wifes ride....

 

But the six speed would be nice.....

 

Jbo

[L76PWRD]

I am in the market for a truck and have been driving myself crazy over what to get.

At first I was looking at some nice 04 to 06 (GMT800) Chevy or GMC Crew Cab 1500s, decked out for about $16K

But the more I look at the newly redesigned 2007+ (GMT900) trucks, the more I like them.

But, they are getting a bit out of my budget. I am finding ones alittle less equipped, and slightly higher mileage, for about $18 to $20K

 

So, I need schooled on everything they changed with the newly designed GMT900 trucks.

Here are some of my main questions, but any other input would be greatly appreciated. no detail too small.

- I want the 5.3L no matter what year I get, and I see that its up on HP alitte, but are all the GMT900 trucks using the new Fuel Management/ Cylinder Shutoff? and if so, how much is that really mattering?

- Are the GMT900 trucks more, or less fuel efficient?

- I know the GMT900 has an all new suspension and frame, How does the ride quality compare?

- Is the 4 spd auto tranny the same in them? Not seeing many at all equipped with the 6 spd, least not in my price range.

- Anything you guys DONT like about the GMT900 models compared to the GMT800?

 

Thanks alot guys,

~John

 

 

 

Yeah, the 5.3l come with AFM even the 6.0L. If you don't want AFM you'll have to go with the 4.8l. Looking into removing this in my truck. My experience with AFM doesn't really do anything. For it to come on you have to be on flat ground, going up a hill it will shut off, accelearting makes it turn off. On my Black Bear Tune I have turned it off and I get the same mileage. No MPG lost for turning AFM off.

 

I had a 2006 Silverado with the 5.3l 4 speed with 3.73 gears and I get about the same with my 2007 Silverado 6.0l 4 speed with 3.73 gears. Don't really see a difference between MPG, the difference is that the 6.0 has more power & torque.

 

My 2007 Vortec Max rides good, I put 2 Inch Drop Shackles & removed the rear lift blocks and rides the sames as stock.

 

The 4 speed tranny is the same it is the 4l60, mine is a 4l70 the only difference is that it is a little beefed up.

 

I like my GMT-900 more than my GMT-800, the thing I liked about my GMT-800 was that it was lower. I have 3 years with my GMT-900 and it has held up good, I'm at 80,000 miles. Biggest thing was that I broke the transmission, but it was fixed under warranty. I like my rear disc brakes, but I need to change them again. This is going to be the third time changing them. I need new tires also but it has been 3 years. So far so good, at what miles should the shocks be changed?

[FargoZ71]

Shocks usually get changed at about 50-75k.

I am in the market for a truck and have been driving myself crazy over what to get.

At first I was looking at some nice 04 to 06 (GMT800) Chevy or GMC Crew Cab 1500s, decked out for about $16K

But the more I look at the newly redesigned 2007+ (GMT900) trucks, the more I like them.

But, they are getting a bit out of my budget. I am finding ones alittle less equipped, and slightly higher mileage, for about $18 to $20K

 

So, I need schooled on everything they changed with the newly designed GMT900 trucks.

Here are some of my main questions, but any other input would be greatly appreciated. no detail too small.

- I want the 5.3L no matter what year I get, and I see that its up on HP alitte, but are all the GMT900 trucks using the new Fuel Management/ Cylinder Shutoff? and if so, how much is that really mattering?

- Are the GMT900 trucks more, or less fuel efficient?

- I know the GMT900 has an all new suspension and frame, How does the ride quality compare?

- Is the 4 spd auto tranny the same in them? Not seeing many at all equipped with the 6 spd, least not in my price range.

- Anything you guys DONT like about the GMT900 models compared to the GMT800?

 

Thanks alot guys,

~John

 

 

 

Yeah, the 5.3l come with AFM even the 6.0L. If you don't want AFM you'll have to go with the 4.8l. Looking into removing this in my truck. My experience with AFM doesn't really do anything. For it to come on you have to be on flat ground, going up a hill it will shut off, accelearting makes it turn off. On my Black Bear Tune I have turned it off and I get the same mileage. No MPG lost for turning AFM off.

 

I had a 2006 Silverado with the 5.3l 4 speed with 3.73 gears and I get about the same with my 2007 Silverado 6.0l 4 speed with 3.73 gears. Don't really see a difference between MPG, the difference is that the 6.0 has more power & torque.

 

My 2007 Vortec Max rides good, I put 2 Inch Drop Shackles & removed the rear lift blocks and rides the sames as stock.

 

The 4 speed tranny is the same it is the 4l60, mine is a 4l70 the only difference is that it is a little beefed up.

 

I like my GMT-900 more than my GMT-800, the thing I liked about my GMT-800 was that it was lower. I have 3 years with my GMT-900 and it has held up good, I'm at 80,000 miles. Biggest thing was that I broke the transmission, but it was fixed under warranty. I like my rear disc brakes, but I need to change them again. This is going to be the third time changing them. I need new tires also but it has been 3 years. So far so good, at what miles should the shocks be changed?