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Chevy Silverado and GMC Sierra Mileage Improvement

24 messages,  Last post on Feb 19, 2010 at 10:25 AM

You are in the Chevrolet Silverado & GMC Sierra Forum.

What is this discussion about? Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Silverado 2500, Truck

Messages Page 2 of 3

#5 of 24 Re: MAP SENOR adjustment to improve gas milage [mrmouse3] by obyone

Jun 11, 2008 (6:58 am)

Replying to: mrmouse3 (Jun 10, 2008 11:20 pm)
If it has a screen, remove it. That will cause a lean condition.

#6 of 24 Re: MAP SENOR adjustment to improve gas milage [obyone] by mrmouse3

Jun 11, 2008 (2:28 pm)

Replying to: obyone (Jun 11, 2008 6:58 am)
What if it does not have a screen. Any other suggestions? Thanks

#7 of 24 Re: MAP SENOR adjustment to improve gas milage [mrmouse3] by obyone

Jun 12, 2008 (12:06 pm)

Replying to: mrmouse3 (Jun 11, 2008 2:28 pm)
If it doesn't have a screen there's not much you can do with it since all it does is measure the volume and temperature of the incoming air.

#8 of 24 Any bolt on MPG improvements for 2004 chevy2500 by chevy412sp

Jun 26, 2008 (7:19 am)

I own a 2004 chevy 2500 with a 6.0L and a 3.73 axle ratio. I am wondering if anyone as a similiar truck or same size motor that has put any bolt on's such as a air intake kit, fuel catalyst system, computer programmer, throttle body spacer, or anything else that has gotten any real world MPG improvements. I read about alot of the products that "SAY" they give you MPG increases. I wondering if anybody as any experiences with the products?

#9 of 24 Re: Any bolt on MPG improvements for 2004 chevy2500 [chevy412sp] by obyone

Jun 26, 2008 (4:15 pm)

Replying to: chevy412sp (Jun 26, 2008 7:19 am)
The items that you've listed will do two things. Increase in cab noise and lighten your wallet. The manufacturer would've done all of the above in their quest for bragging rights in increased mpg if they beleived it would've helped.

#10 of 24 2003 silverado 4x4 by kazper62

Nov 11, 2008 (8:48 pm)

hello all,
 i have a 2003 silverado 4x4 with a 5.3. my question is that i feel the mileage is poor compared to what i have heard other trucks are getting. the best hwy i've seen has been 15.5 hwy. i put a volant cold air intake, a torque spacer and a magnaflow exhaust system all with claims of mileage improvements. i have driven this vehicle at a pace to try to get mileage but have not seen any gain. any ideas?

#11 of 24 Re: 2003 silverado 4x4 [kazper62] by obyone

Nov 11, 2008 (10:49 pm)

Replying to: kazper62 (Nov 11, 2008 8:48 pm)
What brand tires, size, and psi are you running?
 
Last time changed plugs and wires?
 
What kind of motor oil and weight?
 
What rear end?

#12 of 24 Re: 2003 silverado 4x4 [obyone] by kazper62

Nov 12, 2008 (9:40 am)

Replying to: obyone (Nov 11, 2008 10:49 pm)
hi
 
 the tires and rims are 17" off a 2007 gmc 4x4 goodyear wrangler ats 38 psi
 
never changed plugs or wires it has 64000 miles on it
 
i use 5-30 havoline but thinking about switching to schaffers synthetic on a recommendation from a friend at the local napa store.
 
the rear axle ratio i have no idea

#13 of 24 Re: 2003 silverado 4x4 [kazper62] by obyone

Nov 12, 2008 (2:48 pm)

Replying to: kazper62 (Nov 12, 2008 9:40 am)
I'd do the switch to synthetic. Also change the plugs and wires even though GM says it's good to 100K. You will probably show a little increase with the changes. Nothing major but a little here and a little there adds up.

#14 of 24 Re: MAP SENOR adjustment to improve gas milage [mrmouse3] by stacks125

Mar 04, 2009 (7:41 pm)

Replying to: mrmouse3 (Jun 10, 2008 11:20 pm)
that sounds like a great idea. Would you be able to let me in on some info on what it takes make it run on hydrogen and did you notice any power loss?
 
            Thanks Stacks

Messages Page 2 of 3

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