Last post on Oct 17, 2006 at 8:34 PM
You are in the Chevrolet Silverado & GMC Sierra
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Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500, GMC Sierra 1500, GMC Sierra 2500, GMC Sierra 3500, Truck
#5430 of 5688 2004 Crew Cab 4x4 Silverado 1500
Feb 03, 2006 (5:12 pm)
Hello all, new member here. I just recently purchased my first Chevy Truck, and I love it. Of course, even though its a great truck, I feel the need to modify it, performance wise at least.
I have been thinking of doing the following mods, and would like some opinions:
Cold Air Intake System, K&N or Airraid
Granetelli Mass Air Meter
Gibson Extreme Truck duel side exit exhaust
Hypertech Programmer for the ECM
Those are the definites. Im not looking for just stupid power, I want improved gas mileage as well. I travel on average 60-80 miles/day. I also thought of doing an engine mod that reroutes the anitfreeze hose that goes through the Throttlebody, and was wondering if anyone has done this, and how it worked, or if I shouldnt do it at all. I might also consider a new throttlebody, but again, Im looking for the best gas mileage possible. I dont beat the hell out of the truck, I just want it to be the best it can be. Considered a hyperground system as well.
I look forward to all opinions, and all the great feedback. Thanks in advance.
#5431 of 5688 Re: 2004 Crew Cab 4x4 Silverado 1500 [mcphck]
Feb 03, 2006 (9:32 pm)
MC....Welcome to the forum!
Before you go buying all those $pendy parts which IMO are
about worthless. Do a PCM burn or a handheld tuner to
wake up that 6.0 !!!!!!!!!!
I have a Hypertech 3 handheld in my 04 2500 hd 6.0 and
it works great!
I use my truck for heavy towing, snowplowing and hauling.
The only problem is the Hypertech unit will NOT overide
the darn "torque mgmt.".
It has a lot more grunt and giddy-up tho along with a
few more MPGs on the cheapest gas I can find !
For a PCM burn check out the "Jesse tune aka Wait4 me" PCM burn tune thats been posted on the GM truck sites......$80 bucks!
Westers is a good burn too but pricey at $400? bucks.
Hypertech 3 is around $250
The Diablo preditor handheld WILL do what the Hypertech
unit does PLUS override/modify the torque mgmt.! $350
For me since the GM Tech 2 can "see" the PCM burn and I
am under warranty and want NO hassle when I break something
towing or plowing I can just pull the tune out!
I would start there before I do anything else !
#5432 of 5688 Re: 2004 Crew Cab 4x4 Silverado 1500 [mcphck]
Feb 03, 2006 (10:16 pm)
I also thought of doing an engine mod that reroutes the anitfreeze hose that goes through the Throttlebody, and was wondering if anyone has done this, and how it worked, or if I shouldnt do it at all. I might also consider a new throttlebody, but again, Im looking for the best gas mileage possible.
I've done this mod. I didn't particularly like the idea of heating up the intake air beleiving that cooler/denser is better. Didn't notice much of a difference before and after. Then again it's the cumulative effect of all the mods that really make the difference.
#5433 of 5688 Handheld tuners...
Feb 04, 2006 (7:03 am)
Check ebay, your 2004 Silverado uses the same Predator tuner that 04 Corvette and 04 GTO use. Search for 04 predator; gto, corvette, or silverado. They are sold weekly for around $250. I bought one of these primarily to correct the speedometer error after mounting larger tires. I also loaded the 87 octane "performance" tune. Main advantage is getting rid of torque management and improving transmission performance. I saw a small increase in mileage, too. You can actually custom-tune your air/fuel ratio and spark advance in addition to transmission shifting/timing and torque management, if you want to really get into it. Or you can just use the "canned" performance tune built in... just remember that it is pretty conservative (liability and all). It also has real-time monitoring of sensor and engine parameters (O2 sensors, timing advance, long and short term fuel trims, throttle sensor, coolant and air intake temp, etc.)
#5434 of 5688 Re: Handheld tuners... [white6]
Feb 04, 2006 (8:34 am)
I guess I should have mentioned that my truck has the 5.3L V8 in it. I wanted a diesle, but it just didnt work out this time.
Feb 04, 2006 (8:44 am)
A 5.3? Heck, they really DON'T have a torque mgmt. issue
like the 6.0 & 8.1s!
My bud has a 04 1/2 ex-cab 4x4 5.3 and he can BLOW my 6.0s
doors off. Bone stock too !!!!!!!!!!!!!
But when it comes time to tow 10k lbs. the 6.0 really shines!
Best bang for the buck...........A tuner of some sort!
#5436 of 5688 water leak 1999 GMC 2500
Feb 05, 2006 (7:45 am)
Hello, I'm looking for a water leak in a 1999 GMC 2500, I have replaced the windshield but still have water coming in. The water has only been coming in on the drivers side after it rains, the next step the shop is going to take is to remove the hood and all wiper controls and then move to the fenders to look for cracks in body seams and worn or cracked gaskets. Any help to pinpoint this would be great
#5437 of 5688 Re: 2004 Crew Cab 4x4 Silverado 1500 [mcphck]
Feb 06, 2006 (1:38 pm)
Google search for "NELSON PERFORMANCE TUNE"
Its better than the hypertech/diablo/fill in the blank.
Volant Makes the best air intake for hp/$ ratio.
Granatelli is an ABSOLUTE NO NO. On a dyno you gain about 3 hp. The factory intake system is allready good to go for about 650 CFM - the granatelli would be usefull if you were pushing upwards of 500 hp.
Long Tube headers are the best upgrade you can do other than the NELSON TUNE. Also might consider a comp 212/218 .525 lift CAMSHAFT - at least 30 hp increase.
Trust me on this - I LIVED performance Silverado for a few years, its all I did.
NELSON TUNE NELSON TUNE NELSON TUNE.
On the dyno, the throttle-body spacer is also crap.
#5438 of 5688 Re: Handheld tuners... [mcphck]
Feb 07, 2006 (7:47 am)
I knew you did not have a 6.0 liter engine, because you could not get it on a 1500 series truck in '04. Only 1500 HD had them. Now they offer a Vortecmax 6.0 in regular 1500 series.
#5439 of 5688 Re: Handheld tuners... [p100]
Feb 08, 2006 (7:12 pm)
Both the '04 Sierra Denali and Silverado SS are 1500 series trucks that come with the 6.0.