1999 GMC Sierra Lack of power

1999 GMC SIERRA
58,000 MILES • V8 • 2WD • AUTOMATIC
Avatar
CHUCKZACH
  • MEMBER
  • 1 POST
Will go above 2000 RPMS while in park, but when driven will not accelerate and only will allow about 2000 Rpms
Oct 29, 2009 at 10:52 AM
Advertisement
Avatar
DOCFIXIT
  • CERTIFIED EXPERT
  • 18,828 POSTS
Hi
Maybe blocked CAT does engine make a loud moaning sound? No miss? start up good? any check engine light?
Let me know
Thanks for donate
Oct 29, 2009 at 1:04 PM