1996 Chevy trans will not lock-up
Please help. 1996 Chevy K1500 5.7 (350). 160,000 Miles
VCU will not command lock-up on transmission. Although transmission will lock-up on scanner request Transmission has been completely rebuilt at 160,000 miles Replaced ECU 3.670 (part #16244210 vcm-reman) twice and replaced module 2.383(part #16208981) in vcm Still unable to communicate with vcm. Traced all wiring to vcm. Cleaned all terminals and connection. Chevy Dealer has had my truck from 6/13/07-7/7/07. Snap shots have been taken while truck is moving and records strange data (ex. Driving in gear 256). They have been unable to solve lock-up problem. They have suggested that the vcm needs new programming directly from G.M. engineering. Up-grades 3in. Rancho Suspension (33x15x12.5 BFG) K&N air-intake Dug Thorly Tri-Y headers Genuine Gear 4.10 front and rear with rear ARB air locker Air Lift rear air bag system with on-board compressor Replace timing chain and installed high-volume oil pump at 160,000 miles Tranny rebuilt and up-graded. At 160,000 miles H/D trans rebuild Torque converter rebuild Z pack, 3-4 Force motor Shift kit Sun Shell update Input sprag U-joint-frt (RR driveshaft) U-joint rear (rear driveshaft) MLPS-OEM Is there anything else that can be checked that might cause tranny not to lock-up?Thanks, Michael |
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