K Yukon/Denali 4WD V8-6.5L DSL Turbo VIN S (1999)
Vacuum Brake Booster: Service and Repair
Brake Booster Push Rod Gauging Procedure (Vacuum Booster)
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Tools Required
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J 37839 Push Rod Height Gauge
1. Gauge the piston rod. Use the J 37839. Check the maximum and minimum rod length.
2. If the piston rod is not within limits, replace the booster assembly as a complete unit. Do not attempt to grind or shave the push rod to compensate
for incorrect length.
