Tires/Diffs Locking up

Sdakota18 · Jul 23, 2024

Hey guys! Got a 97 k1500 Stepside with the 5.7 vortec. Having intermittent issues with the diffs locking up(mostly front, but rear does as well). Haven’t torn anything apart, but wondering if the issue could possibly be electrical and not just mechanical? I’ve been having lots of issues figuring this truck out, fix one thing; another goes.

b454rat · Jul 23, 2024

With front lock g up sounds more like t-case issues. If electric issues, the front diff would just “lock in” meaning e facing front diff. But even if that does engage, it will still function ok….

Sdakota18 · Jul 23, 2024

It does function; the rear will drag the tire and then release depending on speed( low speed or coming from a stop) and that’s even on a no turn. Front does so more often from at speed. It does have electric shift but no 4wd lights on.

Sdakota18 · Jul 23, 2024

I feel the front diff lock up more as your moving(feel the inertia then let’s off)

Nad_Yvalhosert · Jul 23, 2024

Sdakota18 said:
Hey guys! Got a 97 k1500 Stepside with the 5.7 vortec. Having intermittent issues with the diffs locking up(mostly front, but rear does as well). Haven’t torn anything apart, but wondering if the issue could possibly be electrical and not just mechanical? I’ve been having lots of issues figuring this truck out, fix one thing; another goes.

You're gonna want to pull the rear brake drums. The craptastic 254mm leading/trailing junk will commonly groove themselves into the backing plate.

Schurkey · Jul 23, 2024

Perhaps a moderator will move this thread out of the ENGINE forum; perhaps into Axles + Brakes.

Tires/Diffs Locking up

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