# 1997 GMC Sonoma V6 4.3L

**URL:** <https://community.cartalk.com/t/1997-gmc-sonoma-v6-4-3l/3796>\
**Category:** Maintenance/Repairs\
**Created:** [August 28, 2007, 2:40pm UTC](https://community.cartalk.com/t/1997-gmc-sonoma-v6-4-3l/3796 "2007-08-28T14:40:23Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![joshualandry](https://avatars.discourse-cdn.com/v4/letter/j/e5b9ba/32.png) [@joshualandry](https://community.cartalk.com/u/joshualandry)\
**Post date:** [August 28, 2007, 2:40pm UTC](https://community.cartalk.com/t/1997-gmc-sonoma-v6-4-3l/3796/1 "2007-08-28T14:40:23Z")

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I have been experiencing some problems getting my Sonoma started in the mornings. It seems that if it sits too long (over the weekend), it won’t start right off. It does happen occasionally where it doesn’t start after a nights rest also.  
  
  
  
 So far I have replaced the plugs, wires, distributer and fuel pump.  
  
  
  
 Has anyone had/heard of a problem similar to this?  
  
  
  
 Thank you.

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**Author:** ![vlander](https://avatars.discourse-cdn.com/v4/letter/v/7ab992/32.png) [@vlander](https://community.cartalk.com/u/vlander)\
**Post date:** [May 27, 2008, 12:13am UTC](https://community.cartalk.com/t/1997-gmc-sonoma-v6-4-3l/3796/2 "2008-05-27T00:13:57Z")

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check the ignition wire

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**Author:** ![vlander](https://avatars.discourse-cdn.com/v4/letter/v/7ab992/32.png) [@vlander](https://community.cartalk.com/u/vlander)\
**Post date:** [May 27, 2008, 12:15am UTC](https://community.cartalk.com/t/1997-gmc-sonoma-v6-4-3l/3796/3 "2008-05-27T00:15:57Z")

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I had the same problems I changed the ignition wires works fine now

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**Author:** ![pleasedodgevan](https://avatars.discourse-cdn.com/v4/letter/p/51bf81/32.png) [@pleasedodgevan](https://community.cartalk.com/u/pleasedodgevan)\
**Post date:** [May 27, 2008, 1:21am UTC](https://community.cartalk.com/t/1997-gmc-sonoma-v6-4-3l/3796/4 "2008-05-27T01:21:50Z")

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It could be a bad fuel pressure regulator. Have the fuel pressure checked. Sometimes you can remove the vacuum line from it and if there is fuel in it, replace it. Sorry you had the fuel pump changed; that’s ususlly not the cause.

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**Author:** ![crankwalk5](https://avatars.discourse-cdn.com/v4/letter/c/3e96dc/32.png) [@crankwalk5](https://community.cartalk.com/u/crankwalk5)\
**Post date:** [May 27, 2008, 1:30am UTC](https://community.cartalk.com/t/1997-gmc-sonoma-v6-4-3l/3796/5 "2008-05-27T01:30:43Z")

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4.3 Z, 4.3 W.

check the COIL.

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**Author:** ![willey](https://avatars.discourse-cdn.com/v4/letter/w/a9adbd/32.png) [@willey](https://community.cartalk.com/u/willey)\
**Post date:** [May 27, 2008, 2:19am UTC](https://community.cartalk.com/t/1997-gmc-sonoma-v6-4-3l/3796/6 "2008-05-27T02:19:56Z")

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This has a fuel injector assembly that has a regulator on it that fails. It’s a common problem. The injector assembly needs to be replaced.