my truck is not runing

1998 GMC SONOMA
172,654 MILES • 6 CYL • 2WD • AUTOMATIC
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LITEGUY
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  • 1 POST
my 1998 gmc sonoma is poping out the intake an the ex ? it runs badthe codes are po300/po155/po102 help?
Dec 12, 2010 at 10:02 PM
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HMAC300
  • CAR REPAIR CONTRIBUTOR
  • 48,601 POSTS
they are all related to your popping problem. you have either thrown a pushrod/ bent a valve or punched a hole in the rocker arm. it needs to belooked at by a pro. you could have also burnt avavle aswell . that 's why it's poppping.
Dec 14, 2010 at 11:56 PM
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