# 1995 GMC 2500C diesel won't start

**URL:** <https://community.cartalk.com/t/1995-gmc-2500c-diesel-won-039-t-start/71949>\
**Category:** Maintenance/Repairs\
**Created:** [April 17, 2012, 12:16am UTC](https://community.cartalk.com/t/1995-gmc-2500c-diesel-won-039-t-start/71949 "2012-04-17T00:16:56Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Whipple](https://avatars.discourse-cdn.com/v4/letter/w/e19adc/32.png) [@Whipple](https://community.cartalk.com/u/Whipple)\
**Post date:** [April 17, 2012, 12:16am UTC](https://community.cartalk.com/t/1995-gmc-2500c-diesel-won-039-t-start/71949/1 "2012-04-17T00:16:56Z")

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Periodically, for several months, either the truck wouldn’t start or would shut down with no warning while diving. Now, it will not start at all. The symptom of the starting issue: the “wait to start” light would come on, but flicker off immediately. Until recently, the truck would start when the light remained on for several seconds. Now, I cannot get it to remain on and start. It is not the glow plugs or glow plug controller. Both have been tested or changed. I did replace the main ground wire to the starting motor. What should I look at next?

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**Author:** ![oldbodyman](https://avatars.discourse-cdn.com/v4/letter/o/bbce88/32.png) [@oldbodyman](https://community.cartalk.com/u/oldbodyman)\
**Post date:** [April 17, 2012, 1:06am UTC](https://community.cartalk.com/t/1995-gmc-2500c-diesel-won-039-t-start/71949/2 "2012-04-17T01:06:54Z")

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I would start with the fuel system. When a diesel is running the only way to turn it off is to turn off the fuel. It could be a bad fuel pump,fuel filter or whatever controls the fuel on your truck. I would bet its what controls the fuel.

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**Author:** ![Whipple](https://avatars.discourse-cdn.com/v4/letter/w/e19adc/32.png) [@Whipple](https://community.cartalk.com/u/Whipple)\
**Post date:** [April 22, 2012, 6:05am UTC](https://community.cartalk.com/t/1995-gmc-2500c-diesel-won-039-t-start/71949/3 "2012-04-22T06:05:06Z")

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It’s not the fuel pump, filter or injector pump

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**Author:** ![Caddyman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/caddyman/32/23_2.png) [@Caddyman](https://community.cartalk.com/u/Caddyman)\
**Post date:** [April 22, 2012, 6:33am UTC](https://community.cartalk.com/t/1995-gmc-2500c-diesel-won-039-t-start/71949/4 "2012-04-22T06:33:55Z")

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The glow-plug light is not acting normally. Find out why…How many miles on this vehicle? Compression test?