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replacing abs pump on 04 sierra

04sierra2500hd

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04sierra2500hd Enthusiast

04sierra2500hd

Posted
Posted

i have to replace the abs pump in my 04 2500 hd gmc sierra. my question would be do i have to use a scan tool to activate the pump motor when i bleed the system. ive looked on line and all i see is questions on how to bleed the brakes after the lines have been replaced. i have already replaced all the lines in the truck but the pump never went dry(did not have any problems bleeding them that time). if i put the new pump in would i be able to get fluid all the way out to the bleeders without running the abs pump. any suggestions would be great. i just dont have a scan tool that has that option. thanks

wilsonz71 Enthusiast

wilsonz71

Posted
Posted

If there are no bleeder screws on the new pump then yes you will need the pump to run. I always use a scan tool but it is possible to jump the relay to command the pump on to bleed the air out of it.

  • 1 year later...
jim44646 Enthusiast

jim44646

Posted
Posted

If there are no bleeder screws on the new pump then yes you will need the pump to run. I always use a scan tool but it is possible to jump the relay to command the pump on to bleed the air out of it.

How and which relay do you jump

Thanks

 

Sent from my XT1254 using Tapatalk

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