STEP 2 Carefully remove the oil filter by pulling it straight down.

STEP 3 The wiring harness must be partially disconnected from the valve body. Unplug those connectors as indicated in FIGURE 1 and swing the main harness as shown. A little care here will minimize breakage of the connectors. Remove transmission valve body, 1-2 and 3-4 accumulator housing and spacer plate (held down with support plate). NOTE: Be sure to note check ball locations. If valve body is brought straight down, the seven - (7) checkballs should stay in valve body. However, some may stick to the plate. See FIGURE 2 for the seven locations. There is another checkball that is in case. It will fall out when valve body is removed. See FIGURE 3 ARROW #1. Transmission gel or petroleum jelly will hold it into case during reassembly.

Figure 2 - Checkball Locations

STEP 4 Remove the pressure regulator assembly from the transmission pump. See FIGURE 3, ARROW #2. Push up on the TV boost valve sleeve when removing the retaining ring. Be careful, as there is heavy spring tension behind it. Slowly lower the sleeve to relieve spring tension. Replace the small OD spring with the black spring supplied. The small spring goes inside the large spring and the assembly. Reinstall in pump (See FIGURE 4). The pressure regulator valve may come out during disassembly. If so, coat with transmission gel or petroleum jelly and put back up inside pump GENTLY. Do not force. BE SURE to reinstall parts in correct order.

STEP 5 Drill orifice sizes in spacer plate (See FIGURE 5 template). Drill bits are supplied with kit.

Figure 1

Figure 3

Figure 4

STEP 8 Remove forward accumulator cover from the valve body. (See FIGURE 6 for location of forward accumulator cover and spring location.) Replace forward accumulator spring with White spring supplied in kit. Reassemble forward accumulator lineup and reinstall cover.

STEP 9 Remove 1-2 accumulator piston and spring from the accumulator housing. (See FIGURE 7) Replace large accumulator spring with Yellow spring supplied in kit. Remove 3-4 accumulator spring in case as per diagram. (It is likely this spring fell out when the accumulator housing and spacer plate were removed. DO NOT reinstall this spring.)

STEP 10 Making sure that the check ball is in its proper location per FIGURE 3, reinstall spacer plate with gaskets supplied and accumulator housing. Three (3) ¾" long bolts hold the support plate in place. Use a short bolt (for alignment purposes only) at opposite end of spacer plate while tightening down retainer plate, then remove the short bolt before proceeding.

STEP 11 Reinstall valve body (See FIGURE 8 for shift link reference.) Make sure the check balls are in the seven (7) proper locations. There are six (6) different lengths of bolts for valve body hold down. The quantities, length, mm socket size, and reference letter are shown below. FIGURE 9 indicates the location of each size.

Two (2)……. 1/2" ……..10mm…....A

Five (5)……. 3/4"…..…8mm……..B (3 on support plate)

Four (4)….. ...1-3/8".....10mm…....C

Nine (9)……..1-7/8" ... 10mm.... …D

Three (3)…....2-1/8"…...8mm………E

Four (4)……..2-1/2". ... 10mm….... F

STEP 12 Install new oil filter supplied in kit.

STEP 13 Reinstall oil pan with new gasket supplied.

STEP 14 If this is a non-LT-1 4L60E TCI^® 376002 kit, refer to instructions for TCI® 376003 and install heavy duty servo.

STEP 15 Fill with five (5) quarts of transmission fluid before starting engine. After running through shift pattern several times while remaining stationary, completely fill the transmission per manufacturer’s specifications.

Figure 8

Figure 9