Kids at the Chevy dealer working the oil change shift apparently don't know what grease zerks are. I had my 2500HD in for routine maintenance etc., got it home and could tell they never touched a zerk, called the service manager and he said get it right back and it'll get done if he has to do it himself. I think my truck has 11 zerks.
1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
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