Question about 1998 GMC Sierra

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When i take off in my truck it goes threw every gear great but when i floor it. my rpms rev up and the truck goes no where what could that be?

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  • Master
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Manual transmission? If so the clutch is shot.
Automatic transmission? If so then the clutches could be shot. If the truck eventually gets up to speed and seems better then the torque converter is bad. (internal sprag is broken) Automatic transmissions have a number of clutch packs and yours has at least one band as well. If pressure is low or the clutches are worn out it will slip. And it will get pretty hot too so your oil will smell bad and be a brownish color instead of pinkish red.

Posted on May 28, 2010

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  • GMC Master
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SCAN TRUCK FOR TRANSMISSION SHIFT SOLENOID FAULTS.AND CHECK FUSE AND TRANSMISSION FLUID AND MANUAL SHIFT LINKAGES.IF ALL IS OKAY.TRANSMISSION FAULTY.

Posted on May 28, 2010

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