Pioneer Cables 622531 Automatic Transmission Mount

Automatic Transmission Mount for GM Applications

Pioneer Cables 622531 is an automatic transmission mount built for select GM vehicles from the late 1970s and early 1980s. It is a direct replacement option for drivers servicing a Pontiac Grand LeMans, Pontiac Sunbird, Chevrolet Monza, or Oldsmobile Starfire transmission mount application.

Key Features

• Automatic transmission mount replacement for specific rear-wheel-drive and compact GM applications
• Sure-Fit System application testing for vehicle-specific installation checks
• High-grade metal housing with corrosion-resistant coating or pure aluminum construction, depending on application
• Bonded blended rubber compound for vibration absorption
• Seamless hydraulic fill and electronic control where specified by application
• Interchange reference: 2531

Application Details

This Pioneer Cables 622531 transmission mount is engineered for fitment on 1976-1983 Pontiac Grand LeMans, 1977-1980 Pontiac Sunbird, 1977-1978 Pontiac Phoenix, 1978-1980 Chevrolet Monza, 1978-1980 Oldsmobile Starfire, 1980-1983 Oldsmobile Cutlass Cruiser, and 1981 Pontiac Parisienne. It is a practical replacement for worn automatic transmission mounts on these vehicles, helping restore proper drivetrain support and reduce movement at the transmission-to-crossmember connection.

What This Part Helps Address

• Excessive drivetrain vibration felt through the cabin
• Transmission movement caused by a deteriorated mount
• Noise from a cracked or separated rubber mount
• Misalignment at the transmission support point
• Wear-related replacement needs on Pontiac Grand LeMans and Chevrolet Monza applications

Installation Notes and Tips

Verify the vehicle year, make, model, and transmission mount location before installation. Compare the original mount shape, bolt pattern, and bracket interface to confirm the correct application for your Pontiac Grand LeMans, Pontiac Sunbird, or Chevrolet Monza. Inspect adjacent drivetrain mounts and crossmember components for wear during service so the new mount can perform as intended.

Quality Assurance

Pioneer Mounts use application-specific testing on vehicle fixtures to confirm fitment and support consistent installation results. The mount housing is built from durable metal or aluminum, and the bonded rubber element is matched to the application to help absorb vibration during operation.