Where's Tim Taylor when you need a rewire? HA-HA!
I have a '09 Texas Edition Siverado Crew Cab Short Bed with 5.3 that can't live up to it's name. I bought it new, and have about 38000 miles on it now.
I lived with the wimpy 5.3 for this long, but recently I purchased an RV trailer that I would like to pull with it.
My observation from start:
Comparing my truck to my wifes '08 Tahoe (5.3), the wifes Tahoe will walk off and leave me. Also she was getting an average 24mpg on the highway (by computer), while I'm getting 15.6. The two differences that I know for sure (besides the years), is 5 speed automatic, and flexfuel (hers).
Changes I've made recently (within the last week):
1.Replaced 3.42 gears with 4.10. Getting a little better MPG on the highway now.
2.Installed K&N cold air intake kit just to have the check engine light come on with the running TOO lean codes. K&N advised me to remove and replace the factory intake.
3. Installed a throttle body spacer with slight change in throttle response.
With the 4.10 gears, I can pull my trailer a little better, but something is still holding it back. WAY BACK!
I would appreciate any and all help I can get to stop wasting money on slight changes. I have about $1500 to try to get the most out of it.
Thank you for listening and your advise.