What should br the OD rpms be at 70 mpr on my 2004 chevy tahoe 4x4?

Asked by johnw44 Jan 07, 2016 at 08:24 PM about the 2004 Chevrolet Tahoe LS 4WD

Question type: General

At 70 mph my chevy Tahoe 2004 4x4 is tacking 2300 rpms. Is this proper or is my OD not working?

9 Answers


That all depends on what package you have on your Tahoe, the low geared differentials will have higher engine RPM's then a higher geared one, my Yukon is turning right at 2 grand at 70 but I have done some wheel and tire size changes and readjusted the sensors accordingly. if you have a light touch with the throttle on the highway you can feel it shift all 4 times, and if your real good you can also feel the torque converter lockup. HTH

4 people found this helpful.

Check your build sheet to see what the final drive ratio is.

2 people found this helpful.

I feel 2300 is acceptable. Count your gear shifts, there will be 4 gears (that means 3 changes). And there is torque converter lockup that happens after 45mph with low throttle. It can feel like a shift. Like they said though, looking up your build sheet or RPO codes will tell you your gear ratio. 3.08's will act very differently than 3.73's

3 people found this helpful.
Best Answer Mark helpful

I do like numbers, they don't lie.

2 people found this helpful.

Your in the ball park at those speeds, it all depends on the final drives gear ratio, tire and wheel size. If it was my rig I suspect that the lockup torque converter hadn't engaged, at 60 mph mines turning 1875 rpm, but I'm running a large tire and wheel 275/65/18, a lot bigger than stock, and some other mods.


I have a 2004 Tahoe Z 71 with 373 gears and the 2000 RPMs exactly my MPH 70 Verified with the GPS on cell phone. Hope it helps , Chevy Rules !

1 people found this helpful.

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