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:help04 2500 cut off after 1 min. running, changed filter added more fuel no stiffness in primer pump whats next
 

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:help04 2500 cut off after 1 min. running, changed filter added more fuel no stiffness in primer pump whats next
Our 04 died, thought it was out of fuel even though the gauge read over 1/4 full, added fuel and tried to prime but the primer button never had any resistance while trying to prime, found the primer pump seals were leaking air. Everything from the tank to the injection pump is on the suction side of the pump so it could never prime. GM's answer to this problem is to replace the entire filter housing assembly at about $600 for the part. I found an aftermarket seal kit but couldn't get it to seal so installed an Airdog lift pump with filters assembly and removed the factory filter assembly. Airdog pump assembly was easy to install, all quick connectors on the fuel lines and haven't had any problems since.
 
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