General Motors GM-47603 Compression Gauge Adapter Shop by Category > Diagnostics>Timing Lights Chadwick & Trefethen 00541 D

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General Motors GM-47603 Compression Gauge Adapter Shop by Category > Diagnostics>Timing Lights Chadwick & Trefethen 00541 DGeneral Motors GM 47603 Compression Gauge Adapter Kent Moore Tool Number: EN 47603 The GM 47603 tool is essential for glow plug replacement due to the updated design. The new glow plug threads are positioned differently in the cylinder head and feature a different thread size compared to previous engine models. The GM 47603 is installed in place of the glow plug and is used in conjunction with the GM 26999 12 Compression Gauge to assess the engines