CaptainSpalding
Newbie
I just finished rebuilding my 4l60e trans and am having issues. The truck is a 1996 K1500 and I am the original owner. A little history of the trans; this is the 3rd rebuild. First rebuild was due to 3/4 clutch burn up was rebuilt by a local shop with a good reputation rebuild during pandemic cost me $3200 took 6 weeks and never seemed right had a convertor shutter from time to time and shifting into 3rd was not crisp then a lost 3/4 again and got a P1870 code at the same time. Lasted a little over 8000 miles, warranty was 12months/12,0000. Took it back to them and they rebuilt the trans again under warranty (4 weeks this time) lasted a hair over 12,000 miles and 3/4 went out again. So this time I decided to rebuild it myself.
Installed did a full rebuild along with adding in 3/4 ZPak, Smartshell, Sonnax performance pack, line pressure boost kit, Transgo 7-CS spring kit, Kevlar extra wide band, 2 and 4 super hold servos, rebuilt 13 vane pump, all new solenoids, new pressure switch manifold and harness.
Pump pressure is good, fluid level is full
with harness hooked up: I have reverse and normal power, when I shift it to drive there is no movement it is like it's in neutral, shift to manual 3 - nothing, shift to manual 2 - moves but it is like the emergency brake is on, manual 1 - same as 2. The movement in manual 1 and 2 is a crawl with the engine at 2000 rpm.
Disconnect the harness: Full reverse normal power, shift to drive slight movement (like the e brake is on), shift to manual 3 - moves but it is like the emergency brake is on, manual 2 - same as 3 and manual 2 with harness, manual 1 - same as manual 2 and manual 1 with harness. Again it is at crawl with the rpms up.
I figure it is an electrical issue at this point but what has me stumped is the crawl under power in forward gears. Any help and guidance is appreciated.
Installed did a full rebuild along with adding in 3/4 ZPak, Smartshell, Sonnax performance pack, line pressure boost kit, Transgo 7-CS spring kit, Kevlar extra wide band, 2 and 4 super hold servos, rebuilt 13 vane pump, all new solenoids, new pressure switch manifold and harness.
Pump pressure is good, fluid level is full
with harness hooked up: I have reverse and normal power, when I shift it to drive there is no movement it is like it's in neutral, shift to manual 3 - nothing, shift to manual 2 - moves but it is like the emergency brake is on, manual 1 - same as 2. The movement in manual 1 and 2 is a crawl with the engine at 2000 rpm.
Disconnect the harness: Full reverse normal power, shift to drive slight movement (like the e brake is on), shift to manual 3 - moves but it is like the emergency brake is on, manual 2 - same as 3 and manual 2 with harness, manual 1 - same as manual 2 and manual 1 with harness. Again it is at crawl with the rpms up.
I figure it is an electrical issue at this point but what has me stumped is the crawl under power in forward gears. Any help and guidance is appreciated.