Check the Idler Arm. If you can move the end of it up and down, it needs a new one. Scribe around it before you pull it so you can put the new one back on in the same position.
I've had this problem on two different pickups and I'm sure my GMC needs it too, but there are a lot of other front end parts it needs.
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1971 GMC 402/TH400
Workin' on it!
Gettin' on it!
Lafayette, CO
**Looking for a nice fleetside longbed for my GMC.
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1971 GMC 2500, 402/TH400 4.10 Daily Driver
Lafayette, CO
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