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john aka eaut
john aka eaut, The Car Guy
Category: Pontiac
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Experience:  15 years as a auto tech
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2007 Grand Prix GXP 5.3/4t653-hd transmission removal and

Customer Question

2007 Grand Prix GXP 5.3/4t653-hd transmission removal and replacement step by step. Also include any torque specs needed.
Submitted: 4 months ago.
Category: Pontiac
Expert:  john aka eaut replied 4 months ago.

Hi . Thank you for asking your question on JustAnswer.

NSMISSION REPLACEMENT
Transmission Replacement

Tools Required

J 37096 Flywheel Holder

Removal Procedure

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Disconnect the negative battery cable.
Remove the air cleaner intake duct.
Remove the starter motor.
Remove the exhaust crossover pipe.
Disconnect the transaxle wiring harness electrical connector (4).
Remove the wiring harness ground nut (3) from the transaxle.
Remove the wiring harness grounds (1, 2) from the transaxle.
Remove the wiring harness ground bolt (6) from the transaxle.
Remove the wiring harness grounds (5) from the transaxle.
Remove the wiring harness bracket bolt (7) and reposition the wiring harness.

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Remove the range selector cable from the transaxle shift lever.
Remove the range selector retainer from the cable.

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Remove the range selector cable from the transaxle.
Disconnect the wiring harness connectors from the top of the transaxle.

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Remove the upper transaxle bolts (3, 4, 5) and the stud (2).
Install the engine support fixture.
Raise and support the vehicle. refer to Vehicle Lifting.
Remove the front wheels. Refer to Tire and Wheel Removal and Installation.
Remove the left and the right engine splash shields.
Remove the frame from the vehicle.

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Install J 37096 in order to gain access to the torque converter bolts and to prevent the flywheel from turning.

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Remove the torque converter bolts.
Remove the oil cooler pipes from the transaxle.
Important: Position and secure the wheel drive shafts out of the way.

Remove the left and the right wheel drive shafts from the transaxle.
Secure the drive shafts to the steering knuckles.
Disconnect the electrical connector from the vehicle speed sensor.
Important: Ensure that the transmission jack is properly secured to the transaxle.

Position a transmission jack under the transaxle and secure the jack firmly to the transaxle.
Remove the transaxle brace.

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Remove the lower transaxle bolt (6) and the stud (1).
Remove the transaxle from the vehicle.
Transfer all necessary parts as needed.
Flush the transmission cooler and lines.
Installation Procedure

Important: Ensure that the transaxle is secured properly to the transmission jack.

Position the transaxle onto a transmission jack and secure the transaxle to the jack.
Install the transaxle into the vehicle.

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Notice: Refer to Fastener Notice.

Install the lower transaxle bolt (6) and the stud (1).
Tighten the bolt and the stud to 75 N.m (55 lb ft).

Install the transaxle brace.

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Install J 37096 in order to gain access to install the torque converter bolts and to prevent the flywheel from turning.

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Install the torque converter bolts.
Tighten the bolts to 63 N.m (46 lb ft).

Install the wheel drive shafts into the transaxle.
Install the oil cooler pipes to the transaxle.
Remove the transmission jack from the transaxle.
Install the frame to the vehicle.
Connect the electrical connector to the vehicle speed sensor.
Install the left and the right engine splash shield.
Install the front wheels. Refer to Tire and Wheel Removal and Installation.
Lower the vehicle.
Remove the engine support fixture.

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Install the upper transaxle bolts (3, 4, 5) and the stud (2).
Tighten the bolts and the stud to 75 N.m (55 lb ft).

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Install the cable to the transaxle range selector cable bracket.

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Install the A/T range selector cable retainer to the cable.
Install the transaxle range selector cable to the transaxle shift lever.

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Reposition the wiring harness and install the wiring harness bracket and the bolt (7).
Tighten the bolt to 25 N.m (18 lb ft).

Install the wiring harness grounds (5) to the transaxle.
Install the transaxle wiring harness ground bolt (6) to the transaxle.
Tighten the bolt to 25 N.m (18 lb ft).

Install the wiring harness grounds (1, 2) to the transaxle.
Install the wiring harness ground nut (3) to the transaxle.
Tighten the nut to 45 N.m (33 lb ft).

Install the starter motor.
Connect the transaxle wiring harness electrical connector (4).
Install the engine crossover pipe.
Install the air cleaner intake duct.
Connect the negative battery cable.
Notice: Refer to Transmission Overfill Notice.

Fill the transaxle with transmission fluid.
Inspect the transaxle for fluid leaks. Refer to Fluid Leak Diagnosis.
Important: It is recommended that transmission adaptive pressure (TAP) information be reset.

Resetting the TAP values using a scan tool will erase all learned values in all cells. As a result, The ECM, PCM or TCM will need to relearn TAP values. Transmission performance may be affected as new TAP values are learned.

Reset the TAP values. Refer to Transmission Adaptive Functions.

Thank you again for trusting us with your problem. John aka eauto

Expert:  john aka eaut replied 4 months ago.

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John S
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Customer: replied 4 months ago.
have you removed one of these transmissions from an LS4 car personally?
Expert:  john aka eaut replied 4 months ago.

yes its not that bad

Customer: replied 4 months ago.
Well what I was looking for (and I should have been more specific) is a personalized step by step from someone who has done this before. I have access to alldata and Chilton's so I can pull diagrams myself. I am not a mechanic however, just a do it yourselfer and some of this doesn't have enough description. Example being the torque converter bolts, where do I remove those from? From behind the dust cover? And for some of the transmission bolts it sounds like they are hard to reach and you need a long extension and cannot be reached by hand, how difficult are these to reinstall?
Expert:  john aka eaut replied 4 months ago.

yes from behind dust cover or thru the starter opening not bad...i like to pull the converter bolts and drop the exhaust and drop motor trans and cradle / suspension all in one ..i find it easier that way...but some say its more work..