Any GM Mechanics out there?

  • Thread starter Thread starter Almost freeee
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Almost freeee

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Hi . I just bought a 2002 Chevy Avalanche 4X4 with Auto Transmission.

WHen it shifts from first to second there is no problem. But going from 2nd to 3rd, the RPM goes up as if the converter is slipping without torque being sent to the wheels. And after a couple of second it seems to catch and stop slipping and the car accelerates again. it does the same thing going from 3rd to 4th gear.

I checked the tranni oil, it was fine. There is a small oil leak out of the out put shaft of the tranni. But not a big deal.

Any ideas what's going on and how much work it is to fix it?

Your informed answers would be appreciated
RE. buckeye's answer,
What does plug, wire, distributor cap have to to do with tranni shifting problems? Am I missing something here? It's been years since I owned an American car.
 
A similar problem in a blazer ended up only being the need for a new distributer.As in your other answer,only less smart a**ed,a tune-up isnt a bad idea.My silverado did the same thing and after a tune up with upgraded plugs and a decent cap,rotor,and plug wires,not only does it shift smoother it also delivers power without downshifting so much.So far the high RPMs between gears has not returned.The tune-up is cheaper,may be best place to start.
 
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