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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 239 (Automatic Transaxle - 4T65-E - Service, Diagnosis & Troubleshooting) >> Diagnostic Information & Procedures >> Locked Up in Drive/Reverse

Locked Up in Drive/Reverse

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
Locked up in Drive/Reverse

Checks Cause
DEFINITION: The vehicle cannot be moved forward or backward during the following conditions:
  • The engine is running.
  • The transmission is in Drive or Reverse range.
  • The vehicle brakes are not applied.
  • The throttle is closed (idling).
Manual Linkage Misadjusted
Input and Reaction Carrier Assemblies The input carrier assembly (672) or the reaction carrier assembly (675) components are damaged.
Differential Carrier Assembly
  • The park pawl assembly (694) is broken or damaged.
  • The sun gear shaft (689), the internal gear assembly (693) or the carrier assembly (700) components are damaged.
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