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The ATS Diesel Stage 4 transmission package for 2006–2007 GM 4WD with 8.1L gas LCT1000 6‑speed is an application-specific offering from ATS Diesel. It identifies a Stage 4 package matched to GM four‑wheel‑drive trucks in 2006–2007 that use the 8.1L engine and LCT1000 six‑speed transmission, providing clear fitment guidance for that configuration.
ATS Diesel 2006-07 GM 4wd w/ 8.1L Gas Engine LCT1000 6-Speed Stage 4 Transmission Package
