GWM POER Gearbox Problems: 8-Speed Automatic and 4WD Driveline

Driveline symptoms and where they may point

Possible causes behind POER shift complaints

Possible causes include:

• Fluid condition or level in the 8AT, which can suffer from heat when the pickup tows or crawls in sand.
• Torque converter wear, which can show up as shudder or flare.
• Valve-body or solenoid faults inside the automatic.
• Software or a fault stored in the transmission control unit, sometimes triggered by low battery voltage.
• Transfer-case faults when shifting between 2WD and 4WD.
• Tired engine or gearbox mounts, which turn a normal shift into a clunk.
• Shifter or cable issues when the selector position and the display disagree.

Several of these produce the same feel, so only a workshop scan and test drive can separate them.

Driveline parts listed for the POER

• Automatic gearbox, the 8-speed unit itself
• Torque converter
• Transmission filter
• Transfer case for the 4WD system
• Control modules (ECU, TCU, ABS)
• Mounts and bushings
• Shifter assembly

Major units are matched by VIN and, where possible, by the part number on the old unit.

What an owner can safely note

1. Record the exact warning text or symbol on the cluster; a photo helps.
2. Note when the fault appears: cold start, hot afternoon, towing, in 4WD only, or after the diff lock was used.
3. Check that the selector display matches the lever position in P, R, N and D.
4. Look under the gearbox and transfer case for fresh oil drips after parking.
5. If the 4WD or diff-lock light misbehaves, stop on level ground and try the switch again at the speed the owner’s manual allows.

Do not open drain or fill plugs yourself; most automatic gearboxes need a workshop procedure to check the level.

Workshop now, or stop now?

Stop safely and arrange recovery if the pickup loses drive, the gearbox warning flashes, you smell hot oil, or there is a heavy grinding noise from the driveline.

Book a qualified workshop diagnosis soon if shifts are harsh, the converter shudders, or the 4WD or differential lock will not engage reliably. Avoid towing or off-road use until then, because both raise gearbox and transfer-case temperatures.

Ask the workshop for the fault codes and the part numbers it recommends; that speeds up sourcing.

Sand, trailers and heat on the POER driveline

Soft sand puts the 8AT, transfer case and axles under long, heavy load. Using the differential lock on tarmac or at speed can strain the driveline; read the owner’s manual for when it should be engaged. Towing in summer heat is the other common stress, so after a desert weekend or a long tow, any new shift harshness or whine is worth reporting to a workshop early.

Getting POER driveline parts

Driveline parts for a 4WD pickup are matched in layers: first the 8AT itself, then the converter and filter that belong to it, then the transfer case, shifter and mounts. Send ShipMyPart the VIN, the fault codes your workshop read and any number stamped on the old unit. We work out which gearbox and 4WD hardware your POER was built with, match each item and reply with a quote and the UAE delivery time. What is and is not verified about the 8AT, transfer-case and axle oils is set out in the POER transmission and driveline oil guide.