# 1999 chevy blazer

**URL:** <https://community.cartalk.com/t/1999-chevy-blazer/50634>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet, blazer\
**Created:** [June 21, 2010, 6:20am UTC](https://community.cartalk.com/t/1999-chevy-blazer/50634 "2010-06-21T06:20:46Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![amayala05](https://avatars.discourse-cdn.com/v4/letter/a/9dc877/32.png) [@amayala05](https://community.cartalk.com/u/amayala05)\
**Post date:** [June 21, 2010, 6:20am UTC](https://community.cartalk.com/t/1999-chevy-blazer/50634/1 "2010-06-21T06:20:46Z")

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I changed the ignition cylinder on my 99 blazer and now when i try to start the car it wont start i tried the passlock code relearn but i dont know if thats really the problem, when i turn the key to crank the car up the lights radio, a/c, and dash illumination turn off till i let go of trying to crank the car can anyone please help me and tell me whats wrong.

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**Author:** ![hd72mm](https://avatars.discourse-cdn.com/v4/letter/h/9fc29f/32.png) [@hd72mm](https://community.cartalk.com/u/hd72mm)\
**Post date:** [June 21, 2010, 8:50am UTC](https://community.cartalk.com/t/1999-chevy-blazer/50634/2 "2010-06-21T08:50:47Z")

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Watch head lights when you try to crank, if they dim check ALL connections,wires and battery.  
If they just go out try starting in n instead of park and look at other switches.