thepolecat
06-28-2005, 07:26 PM
Hey guys, I have a 97 GMC 1500 4x4 with 305 vortec and manual transmission. I have had it for several years now, and have always been annoyed at how it seems the computer controls my throttle when shifting. If sitting in neutral, it idles perfectly, but if you mash the gas and let off, it will hold itself at the high rpm for a couple of seconds or so and then fall back to an idle. Also, if you shift from one gear to another, it will hold itself at high throttle after you clutch, and dispite letting off the gas pedal. Also, when going down a hill, you can't let off the gas and rely on the engine for brakeing, because the truck holds itself at the higher rpm still. (although sometimes at low speeds it will engine brake, but only for a few seconds).
It has always done this since I bought it used years and years ago, and is no porblem other than an annoyance. Some people with similar trucks said they had the same thing, but that it was possible to program it to not do it. A GM tech I talked to at the local dealership said it was part of some emmissions control and was not possible to turn off. Does anybody on here have the same thing or know of a way to get it to act like a normal 5 speed should?
Thanks for any help.
Jarrod
It has always done this since I bought it used years and years ago, and is no porblem other than an annoyance. Some people with similar trucks said they had the same thing, but that it was possible to program it to not do it. A GM tech I talked to at the local dealership said it was part of some emmissions control and was not possible to turn off. Does anybody on here have the same thing or know of a way to get it to act like a normal 5 speed should?
Thanks for any help.
Jarrod