The GM 8L90 is an eight-speed electronically controlled automatic transmission used in a variety of rear-wheel-drive and four-wheel-drive Chevrolet, GMC and Cadillac vehicles. Applications include select Chevrolet Silverado, Tahoe, Suburban, Camaro and Corvette models as well as GMC Sierra, Yukon and Cadillac performance and utility vehicles. The 8L90 uses closely spaced gear ratios, electronic shift control, multiple clutch assemblies and a lockup torque converter to provide strong acceleration while reducing engine speed during highway driving. If your 8L90-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 8L90 transmission is appropriate.

Common 8L90 Transmission Problems

Shift-quality and torque-converter concerns are among the problems that can develop in an 8L90 transmission. Drivers may experience harsh or delayed shifts, slipping, RPM flare, inconsistent engagement or shudder during light acceleration. Torque-converter clutch problems can cause vibration, excessive converter slip, overheating or abnormal lockup operation. Valve-body wear, solenoid problems and hydraulic pressure loss can also interfere with proper clutch application and shift timing. Because software, fluid condition, hydraulic faults and internal mechanical wear can produce similar symptoms, proper diagnosis is important before determining whether the transmission requires internal repair or replacement.

Rebuilt 8L90 Transmission Replacement

When internal damage makes replacement necessary, Certified Transmission can provide a professionally rebuilt 8L90 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 8L90 transmission diagnosis and rebuilt transmission service throughout Sarpy County.