Notices
GM Drivetrain & Suspension Chassis | Transmission| Driveshaft | Gears/Rear End/Differential | Traction Aids

Trans wont shift at WOT in 3ed gear

Thread Tools
 
Search this Thread
 
Old 12-19-2011, 03:22 AM
  #1  
TECH Addict
Thread Starter
iTrader: (14)
 
AndysC3's Avatar
 
Join Date: Jun 2009
Location: Minot, ND
Posts: 2,884
Received 10 Likes on 8 Posts
Default Trans wont shift at WOT in 3ed gear

Did a WOT run the other morning. Put the gear selector in 3ed, Braked stalled to 3700, then I took off. RPMs jumped to 4K then slowly started to rise. It didnt shift. Got to about 85 and hit the rev limiter so I let off. I cam to a stop and put it back in drive. When I tried to leave It wouldnt shift at all. Set the aeroforce to moniter the current gear, and it showed I was in 2nd gear. Looked for codes and I got a P0502, VSS imput low. I cleared the code, restarted the truck, and it was back to normal. Could this be something in the tune?
Old 12-19-2011, 05:02 AM
  #2  
Moderator
iTrader: (1)
 
Vince B's Avatar
 
Join Date: Sep 2005
Location: Bloomingdale Illinois
Posts: 8,687
Received 1 Like on 1 Post
Default

Have you had any issues with your speedometer? I seem to remember a guy I know with a camaro that had a similar issue at the track doing basically what yours was doing. I cant remember if changing the vss corrected it or if it was tune related because of the stall. If you are having an issue with your speedometer I would start with installing a VSS or at least remove it to see if it is full of debris.
Old 12-19-2011, 05:33 AM
  #3  
TECH Addict
Thread Starter
iTrader: (14)
 
AndysC3's Avatar
 
Join Date: Jun 2009
Location: Minot, ND
Posts: 2,884
Received 10 Likes on 8 Posts
Default

No other issues. Just when I try to take off in 3ed gear.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
1slwgto
GM Drivetrain & Suspension
4
08-16-2015 06:40 PM
Ls3silverado
Trucks and SUV Classifieds
0
07-31-2015 04:22 PM
dantheman1540
Foreign Performance Discussion
1
07-29-2015 04:45 PM
lxcoupe
GM Drivetrain & Suspension
17
07-14-2015 10:14 PM



Quick Reply: Trans wont shift at WOT in 3ed gear



All times are GMT -5. The time now is 11:28 AM.