# 1999 GMC Sierra 1500 - Hard to start - then dies

**URL:** <https://community.cartalk.com/t/1999-gmc-sierra-1500-hard-to-start-then-dies/145736>\
**Category:** Maintenance/Repairs\
**Tags:** gmc\
**Created:** [August 1, 2019, 12:58pm UTC](https://community.cartalk.com/t/1999-gmc-sierra-1500-hard-to-start-then-dies/145736 "2019-08-01T12:58:36Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![JohnMikiska](https://avatars.discourse-cdn.com/v4/letter/j/bbce88/32.png) [@JohnMikiska](https://community.cartalk.com/u/JohnMikiska)\
**Post date:** [August 1, 2019, 12:58pm UTC](https://community.cartalk.com/t/1999-gmc-sierra-1500-hard-to-start-then-dies/145736/1 "2019-08-01T12:58:36Z")

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It won’t start. Driving home it slowly lost rpm and died. Let it sit for 15 min, started back up but had to do this about 10 times before I could get home. Sounds like it is flooded or chocked up. Might run 5 seconds then dies. I’ve replaced map, maf ,iac sensors. My fixd now says crankshaft position sensor.

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [August 1, 2019, 1:44pm UTC](https://community.cartalk.com/t/1999-gmc-sierra-1500-hard-to-start-then-dies/145736/2 "2019-08-01T13:44:58Z")

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Fuel pump.