Reduced Engine Power
03-09-2013, 06:53 PM
#1
TECH Regular
Thread Starter
Join Date: Feb 2012
Location: South Louisiana-With "Swamp People"
Posts: 411
Likes: 0
Received 0 Likes
on
0 Posts
throwing codes with reduced engine power
Finished my 6l80e swap and battery is dead..been sitting up cple months..i try to jump it and im getting reduced engine power in my message center...still not starting...im firguring i need a battery but will a dead battery put it in reduced engine power?????
Last edited by BIGDADDY1969; 03-09-2013 at 09:08 PM.
03-09-2013, 08:56 PM
#3
TECH Regular
Thread Starter
Join Date: Feb 2012
Location: South Louisiana-With "Swamp People"
Posts: 411
Likes: 0
Received 0 Likes
on
0 Posts
New battery .... now it cranks and barely runs for a second ... still saying reduced engine power ... several codes... p0449 p0463 p0641 p0700 ... thinking my tuner messed up the ecm or my repinned harnesses arent good ... 
03-09-2013, 09:18 PM
#4
TECH Regular
Thread Starter
Join Date: Feb 2012
Location: South Louisiana-With "Swamp People"
Posts: 411
Likes: 0
Received 0 Likes
on
0 Posts
i had just finished my 4l60e conversion to 6l80e ... any body else have insight on all these codes at once? ive looked them all up and im guessing need retune ... he tunes with efi live and pulled out all my stock tunes and flashed for 6l80e for tcm while leaving my engine tune stock.... all my repinned harnesses were to the tee and seem fine but its odd i have vapor sensor and fuel sensors all together with transmission tcm code 
Thread
Thread Starter
Forum
Replies
Last Post
ARC
GMT 800 & Older GM General Discussion
57
02-21-2022 10:54 AM
bsgiffor
GMT 800 & Older GM General Discussion
1
07-19-2015 11:14 AM
