Replaced automatic transmission with used.

Tiny
ANONYMOUS
  • MEMBER
  • 2001 CHEVROLET SILVERADO
  • 236,897 MILES
Replaced automatic transmission with used transmission and torque convertor. Upon initial start, truck will shift gears, but wont move unless I rev engine to approx 3000 RPMs. But then it only moves at a very slow pace. Code scanner reads P0740 only. No other trouble codes listed. Manual indicates this code is the torque converter clutch circuit malfunction.

Can you please provide your feedback on the problem? I am unsure where to start or how to troubleshoot my issue. Is this a torque convertor problem or a wiring issue? How do I fix this problem.

I appreciate your help tremendously
Saturday, October 20th, 2012 AT 1:43 AM

1 Reply

Tiny
HMAC300
  • EXPERT
The code means the torque converter clutch circuit. Either there is something wrong with the converter. It can also bea na ignition switch causeing this. Ck your voltage at pin e at trans connector if it drops below 11 volts while cranking thats your problem if so
don't change switch wire a relay to power trans and use another ign feed to power relay much cheaper than an ign switch.
Was this
answer
helpful?
Yes
No
Monday, October 22nd, 2012 AT 2:51 PM

Please login or register to post a reply.

Recommended Guides