i just had my fuel injector replaced in my 01 gmc jimmy (2 months ago) since then

[Kris]

its been running fine? bt nw its slugish and wen i give it gas my check engine light blinks on and off WATS WRONG WITH IT????

 

[duramax tommy]

The check engine light blinking means catalyst damage! You need to find out what code you have. Then go from there.

 

[loves_me_chevy]

do yourself a favor and have the cat chopped out and replace it with a strait pipe.. more power and better fuel economy