Removal & Installation - A/t GMC Vandura I

1. With transfer case shift lever in "4 Hi" position, disconnect negative battery cable. Raise vehicle and remove skid plate. Drain transfer case. Mark front and rear output shaft yokes and drive shafts for reassembly reference and remove shafts.
2. Disconnect speedometer cable and vacuum harness from transfer case. Remove shift lever from case. Remove catalytic converter hanger bolts at converter. Raise transmission and transfer case assembly with jack and remove transmission mount bolts. Remove mount.
3. Lower complete assembly. Support transfer case alone and remove transmission-to-transfer case bolts. Remove shift lever bracket from transfer case adapter in order to reach upper left attaching bolt.
4. Separate transfer case from transmission adapter and remove from vehicle.

Reverse removal procedures to install. Always use a new gasket between the transfer case and adapter.

1. Disconnect negative battery cable. Remove air cleaner and disconnect TV or detent cable at carburetor. Remove dipstick and filler tube support bracket bolt. Raise and support vehicle. Mark drive shaft for reassembly reference and remove from vehicle.
2. Disconnect speedometer cable and shift linkage and all electrical leads from transmission. Remove transmission support brackets (if present) and flywheel inspection cover.
3. Mark flex plate and torque converter for reassembly in same position and remove torque converter-to-flex plate bolts. Disconnect catalytic converter support bracket (if equipped).
4. Remove transmission rear mount bolts. Support transmission with jack and raise slightly. Remove transmission support-to-frame bolts and insulators. Remove support.
5. Lower transmission enough to remove oil cooler lines and TV or detent cable from transmission. Disconnect lines and cable. Support engine with jack and remove transmission-to-engine bolts.
6. Disconnect transmission assembly from engine. Install torque converter retaining tool (J-21366) and remove transmission from vehicle.

To install, reverse removal procedure and note the following: Before installing flex plate-to-converter bolts, make certain that the weld nuts on converter are flush with the flex plate and the converter rotates freely by hand in this position. Install converter-to-flex plate bolts (3) and tighten finger tight before tightening to proper specification.

1. Disconnect negative battery cable. Remove air cleaner and disconnect TV or detent cable at carburetor. Remove transfer case shift lever knob and boot. Raise and support vehicle.
2. Mark drive shafts for reassembly reference and remove from vehicle. Disconnect speedometer cable, shift linkage and all electrical leads from transmission and transfer case. Disconnect transfer case shift linkage.
3. Remove transmission support strut rods and flywheel inspection cover. Mark flex plate and converter for reassembly reference. Remove torque converter-to-flex plate retaining bolts.
4. Disconnect transmission oil cooler lines from transmission. Support transmission and transfer case assembly with a jack and remove transfer case-to-frame bracket bolts. Remove mount bolts and crossmember.
5. Remove transmission/transfer case assembly mounting bolts and remove assembly from vehicle. Separate transmission from transfer case.

Reverse removal procedures to install, noting the following: Before installing flex plate-to-converter bolts, make certain that the weld nuts on converter are flush with the flex plate and the converter rotates freely by hand in this position. Then, hand start all 3 bolts and tighten finger tight before tightening to specifications.

"S" SERIES

Note. On 4WD models, refer to TRANSFER CASE removal procedures to remove transfer case.

1. Disconnect negative battery cable. Remove air cleaner and disconnect TV cable at carburetor. On models with 1.9L 4-cylinder engine, remove upper starter retaining nut. On all models, raise and support vehicle.
2. Mark drive shaft for reassembly reference and remove shaft. Disconnect speedometer cable, shift linkage and all electrical leads from transmission. Remove brake line to crossmember clips and remove crossmember (4WD only).
3. Remove transmission support brace bolts and converter cover (if equipped). Remove exhaust crossover pipe and converter attaching bolts. Remove crossover and converter as an assembly.
4. Remove flywheel inspection plate and mark flex plate and torque converter for reassembly reference. Remove torque converter-to-flex plate bolts. Disconnect catalytic converter support bracket.
5. Place a jack under transmission and raise slightly. Remove transmission support-to-mount bolt and support-to-frame bolts and insulators. Remove left body mounting bolts and loosen radiator support mount bolt.
6. Raise cab on left side as needed to remove upper transmission-to-engine bolts. Support cab with wood block between body and frame. Slide transmission support towards rear and lower transmission enough to remove oil cooler lines and TV cable. Disconnect lines and cable.
7. Support engine with jack and remove remaining transmission-to-engine bolts. Slide transmission away from engine and install torque converter retaining tool (J-21366) to prevent converter damage as transmission is removed from vehicle. Remove transmission.

Reverse removal procedures to install, noting the following: Before installing flex plate-to-converter bolts, make certain that the weld nuts on converter are flush with the flex plate and the converter rotates freely by hand in this position. Then, hand start all 3 bolts and tighten finger tight before tightening to specifications.

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

See also:
• TRANSFER CASE