Im new to the forums so don't be hating but anyways I have an 02 lb7 and im having tranny problems... ill start it up and no lights will be on and it shifts fine... could go for two days or two miles then the speedo will start to bounce crazy and the check engine light will come on and it will no longer shift outa what ever gear it was in at the time... if I keep driving it the abs light and the break system light also come on... if I want it to shift I have to stop, shut it off, turn it back on then the abs and brake light go out but the check engine light will stay on.... most times it will shift then but really hard and the entire truck cuts out( runs like shit) and usually gets stuck in another gear within a couple hundred feet....let it shut off for a couple hours and start the process all over again! had a friend scan it with a snap on computer and found a bad output speed sensor code and a low fuel while enriched code... no other codes... put a new speed sensor in ran fine for a week then started doing this again... haven't had a chance to get the codes.... any ideas?? any similar stories?? could it be a week cp3 causing limp mode?? HELP!
Help: LB7 limp mode/abs/brake system/check engine light
- Thread starter bdflick43
- Start date
Any luck with solving your trans issue I'm having the same problem?
Sent from my DROID RAZR HD using Tapatalk 2
Sent from my DROID RAZR HD using Tapatalk 2
Fixed mine. Bad wire upstream on tranny harness leading to the vss. As well as a pinched wire behind gauge cluster that was rubbing the dash frame where the tilt wheel brackets are bolted.
Sent from a greasy hand under the hood of my buddys truck.
Sent from a greasy hand under the hood of my buddys truck.