Subject: | No Start, No Crank, Intermittent Electrical Operations (Check For Poor Connections Within Engine Wiring Harness Junction Block) |
Models: | 2007-2009 Cadillac Escalade, Escalade ESV, Escalade EXT |
2007-2009 Chevrolet Avalanche, Silverado, Suburban, Tahoe |
2007-2009 GMC Sierra, Yukon, Yukon XL, Yukon Denali, Yukon Denali XL |
Some customers may comment on a no start, or no crank, or intermittent electrical operations.
This may be caused by probing fuse or relay connectors with incorrect J-Tools, which causes splayed terminals and poor electrical connections. Customers may also have installed wires adjacent to the fuse connector blades in order to create an electrical circuit, which also creates a potential loose connection at the fuse. Other potential causes are probing by independent repair shops during installation of aftermarket accessories like remote start systems.
If the terminals are damaged beyond repair, the engine wiring harness junction block will have to be replaced.
Be sure to use the correct J-Tool (J-356616-35), which is designed to prevent splaying of the terminals and loose connections.
Important: DO NOT use any other device (incorrect J- Tool, multi-meter probe) to test fuse/relay terminals.
This repair will not be covered under warranty due to damage/failure caused by inappropriate probing or customer abuse.