- November 17: Chevy Express and GMC Savana Vans Recalled For Multiple Issues recalls | 10 days ago
- November 13: GM Recalls 514,000 Vehicles After Rear Wheels Lock-Up recalls | 14 days ago
- October 26: Recall: 2024 GMC Canyon Headlights Flicker recalls | 32 days ago
- October 12: GM Vortec Oil Consumption Lawsuit Dismissed news | 46 days ago
- September 28: GM Shift to Park Class Action Lawsuit Debated in Ohio news | 60 days ago
GMC TSB #15389
2015 GMC Sierra 1500
TSB Document:
Affected Component: POWER TRAIN:MANUAL TRANSMISSION
- Summary
- 15389 - SERVICE UPDATE. THIS BULLETIN PROVIDES A SERVICE PROCEDURE TO REPROGRAM THE TRANSMISSION CONTROL MODULE (TCM) ON CERTAIN 2015 MODEL YEAR CADILLAC ESCALADE, ESCALADE ESV, CHEVROLET SILVERADO, GMC SIERRA, YUKON DENALI AND YUKON DENALI XL VEHICLES EQUIPPED WITH AN 8L90 8-SPEED (M5U) TRANSMISSION AND 6.2L (L86) ENGINE. THESE VEHICLES MAY HAVE A CONDITION IN WHICH TRANSMISSION CALIBRATION ALLOWS A HIGHER THAN TARGET ENERGY INPUT TO THE TORQUE CONVERTER CLUTCH (TCC) UNDER CERTAIN CONDITIONS. THIS MAY LEAD TO FASTER THAN EXPECTED TORQUE CONVERTER CLUTCH MATERIAL WEAR, AND A SHUDDER FEELING WHEN THE TCC IS APPLIED.
Click a tab for more information.