How can I can I increase my miles per gallon on my GMC sierra?
- Thread starter Joe
- Start date
Get a plain rim (no tire) and lay it in the bed (you will need your tailgate closed). Drive so that the rim does not slide and bang around. I discovered this method by accident. When I finally got to the scrap place and got rid of the rim my mpg went down. I did not like it sliding around and banging so I accelerated and braked easier both of which are where most people tend to waste lots of energy. It does not help on the highway. For that just inflate your tires to their max rating and live with the discomfort.
um intake and exhaust performance programmer......correct tire pressure.......keeping ur foot out of it...etc.....
if u want more suggestions google hypermiling.......
but honestly what are u getting now?? best u can hope for is around 17-20 hwy....and 15 or so city...
if u want more suggestions google hypermiling.......
but honestly what are u getting now?? best u can hope for is around 17-20 hwy....and 15 or so city...
dick car guy
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many studies have been done, both by manufacturers and independent testers, there is nothing that makes any difference as far as tailgates or bed covers, the pick up design has been wind tunnel tested, there is a natural low pressure zone the air flows over the cab, a low pressure vortices's builds up and the air flows over the tailgate, all that tailgate down tailgate up, no tailgate, backwards hinges, air gate none of it is worth bulldookey. best you can do is as you crest a hill lift your foot slightly and let momentum carry you down, this can actually work pretty good a good tune up clean air oil and pcv filters and clean fuel filter and a good brand of gas, with a light foot is about the best it ever gets.
Molson02536
New member
Best thing that works to get better gas mileage and performance is to tune your PCM. You can ether invest in a tuner like HP tuner to make the adjustments to tune your 5.3, but that is costly unless your planing to make adjustments on a regular base.
You can have your Sierra Dyno tuned around your area at a sped shop or you can call the guys at PCMforless and they can tune your PCM. The have a exchange program as to swapping out your PCM with one of there,s or do what most guys do is pick up a used PCM form the wreckers for $30.00 and send it in to have it tuned so you don't loose any down time.
My GMC Jimmy was getting 19 MPG with the stock tune and now is averaging around 23 MPG with my preference of performance.
Good luck and here is PCMforless link. http://www.pcmforless.com/