Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - 700R4 Pressure
Thread: 700R4 Pressure
View Single Post
  #1 (permalink)  
Old 11-20-2012, 07:56 AM
Edgar86 Edgar86 is offline
Registered User
Join Date: Feb 2009
Location: Texas
Posts: 8
Wiki Edits: 0

Thanks: 3
Thanked 0 Times in 0 Posts
700R4 Pressure

Hi All,

I have a 700r4 in my GMC Jimmy 6.2 Diesel. It has a transmission that was "GM Certified" has burned the 3-4 clutches twice. The TV cable is adjusted correctly; however pressure is a constant 120 PSI in all forward gears and over 200 PSI in reverse (my gauge only goes to 200). Pressure does not change when the TV cable is pulled or when the engine is accelerated. Any ideas? I'm thinking it's a stuck boost valve? Both times the clutches burned the transmission was under a heavy load...hauling a trailer and when engaged in 4WD while in snow.
Reply With Quote