# Gmc truck dies when i stop **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** sierra2500, gmc\ **Created:** [March 12, 2012, 2:29am UTC](https://community.cartalk.com/t/gmc-truck-dies-when-i-stop/71389 "2012-03-12T02:29:37Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![wirenut](https://avatars.discourse-cdn.com/v4/letter/w/898d66/32.png) [@wirenut](https://community.cartalk.com/u/wirenut)\ **Post date:** [March 12, 2012, 2:29am UTC](https://community.cartalk.com/t/gmc-truck-dies-when-i-stop/71389/1 "2012-03-12T02:29:37Z")
i have a 1998 gmc sierra 2500 truck when i start it it runs just fine but after i have driven it awhile when i go to stop as soon as i come to a stop the engine revs up and down and it dies it will not do it if i am in neutral or the engine is cold any ideas what could be causing that . ty ---
**Author:** ![cigroller](https://avatars.discourse-cdn.com/v4/letter/c/c68b51/32.png) [@cigroller](https://community.cartalk.com/u/cigroller)\ **Post date:** [March 12, 2012, 2:45am UTC](https://community.cartalk.com/t/gmc-truck-dies-when-i-stop/71389/2 "2012-03-12T02:45:57Z")
Check engine light? The idle air control valve (IAC) controls the air for the idle and if it is squirrely it can cause the revving up and down and stall the engine. It costs only a little time and money to clean it so there’s not much reason not to. But it shouldn’t make a difference to the IAC whether you’re in neutral or not. (Cold/hot can make a difference with the IAC). I assume this an auto transmission? In that case, I’m actually going to suspect that you have a torque converter clutch (TCC) that not unlocking. It would end up being like stopping a manual in gear without depressing the clutch. If you have an “overdrive off” (or O/D off) option try it out & see if it changes anything. That normally disables the TCC lockup. How many miles are on it? Give all the details you can about maintenance history. ---
**Author:** ![grampy](https://avatars.discourse-cdn.com/v4/letter/g/a9adbd/32.png) [@grampy](https://community.cartalk.com/u/grampy)\ **Post date:** [March 12, 2012, 5:48pm UTC](https://community.cartalk.com/t/gmc-truck-dies-when-i-stop/71389/3 "2012-03-12T17:48:22Z")
Gasket air leak between Carburetor and manifold ---
**Author:** ![missileman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/missileman/32/1366_2.png) [@missileman](https://community.cartalk.com/u/missileman)\ **Post date:** [March 12, 2012, 8:20pm UTC](https://community.cartalk.com/t/gmc-truck-dies-when-i-stop/71389/4 "2012-03-12T20:20:06Z")
A 98’ GMC Sierra has fuel injection. ---
**Author:** ![Pumpkinkrasher](https://avatars.discourse-cdn.com/v4/letter/p/a4c791/32.png) [@Pumpkinkrasher](https://community.cartalk.com/u/Pumpkinkrasher)\ **Post date:** [March 13, 2012, 9:34pm UTC](https://community.cartalk.com/t/gmc-truck-dies-when-i-stop/71389/5 "2012-03-13T21:34:58Z")
If you have an “overdrive off” (or O/D off) option try it out & see if it changes anything. That normally disables the TCC lockup. x2 ---
**Author:** ![grampy](https://avatars.discourse-cdn.com/v4/letter/g/a9adbd/32.png) [@grampy](https://community.cartalk.com/u/grampy)\ **Post date:** [March 14, 2012, 7:31pm UTC](https://community.cartalk.com/t/gmc-truck-dies-when-i-stop/71389/6 "2012-03-14T19:31:25Z")
missileman You are correct. I should have printed " 89 " ---
**Author:** ![system](https://global.discourse-cdn.com/cartalk/original/3X/1/d/1d47c66a543aa6c5a7873bb2320858f978ff52ed.png) [@system](https://community.cartalk.com/u/system)\ **Post date:** [March 16, 2012, 12:54am UTC](https://community.cartalk.com/t/gmc-truck-dies-when-i-stop/71389/7 "2012-03-16T00:54:20Z")
A 1989 Chevy pickup was still injected, no carb. 1987 was the first year for injected Chevy trucks . I would have to go with Pumpkinkrasher on the TCC. Unfortunately there is no switch for OD or TCC. ---
**Author:** ![Frank\_Pytel](https://avatars.discourse-cdn.com/v4/letter/f/87869e/32.png) [@Frank\_Pytel](https://community.cartalk.com/u/Frank_Pytel)\ **Post date:** [December 24, 2012, 1:18pm UTC](https://community.cartalk.com/t/gmc-truck-dies-when-i-stop/71389/8 "2012-12-24T13:18:34Z")
It can still be a gasket leak. I have the same truck. Mine is not fuel injected. It has throttle body injection. Some kind of precursor to fuel injection. My truck still has a manifold and the throttle body of a carb. Just doesn’t have all the inards (I don’t think it does?)