The GM 8L45 is an eight-speed electronically controlled automatic transmission used in a range of rear-wheel-drive and four-wheel-drive Chevrolet, GMC and Cadillac vehicles. Applications include select Cadillac ATS, CTS and CT6 models as well as Chevrolet Camaro, Chevrolet Colorado and GMC Canyon models. The 8L45 combines eight forward ratios with electronic shift control, multiple clutch assemblies and a lockup torque converter to provide responsive acceleration while maintaining efficient engine speed during highway driving. Because shift timing, hydraulic pressure and torque-converter operation work closely together, problems in one area can affect overall transmission performance. If your 8L45-equipped vehicle is shifting harshly, slipping, shuddering or engaging improperly in Bellevue, NE, Certified Transmission can diagnose the cause and determine whether repair or a rebuilt 8L45 transmission is appropriate.

Common 8L45 Transmission Problems

Shift-quality and hydraulic-control problems are among the concerns that can develop in the 8L45. Valve-body wear, pressure-control issues and solenoid-related faults can contribute to harsh shifts, soft or delayed shifts, RPM flare between gears, clutch slippage and gear-ratio codes. Torque-converter clutch problems can produce shudder, excessive converter slip, overheating or improper lockup. Loss of hydraulic pressure or lubrication can also contribute to clutch damage and more serious internal wear. Because similar symptoms can result from software, hydraulic, torque-converter or internal mechanical problems, proper scan-data analysis and transmission testing are important before deciding that complete replacement is necessary.

Rebuilt 8L45 Transmission Replacement

When internal damage makes replacement the best option, Certified Transmission can provide a professionally rebuilt 8L45 transmission matched to the vehicle's specific application. Certified Transmission supports its local stores with a large centralized rebuilding facility where the transmission can be completely disassembled, cleaned and inspected. Valve-body components, clutch assemblies, pump and hydraulic circuits, bushings, bearings, seals, solenoids, torque-converter related components and internal hard parts can be evaluated during the rebuilding process. Contact Certified Transmission in Bellevue, NE for 8L45 transmission diagnosis and rebuilt transmission service throughout Sarpy County.