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Old 01-19-2011, 11:50 AM
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ERS Question?? 5.7 L

Does using ERS give you better (faster) acceleration? Read below taken from the DVD manual.

5.7L Engine
On vehicles equipped with the 5.7L engine, use of ERS (or TOW/HAUL mode) also enables an additional underdrive gear which is not normally used during through-gear accelerations. This additional gear improves vehicle performance and cooling capability when towing a trailer on certain grades. ERS 1, 2, and 3 are underdrive gears; ERS 4 is direct drive. ERS 5 (Overdrive) is the same as the normal 4th gear. When in the DRIVE position in first through fourth gear, the first tap to the left (-) will display the ERS designation for the current gear (the transmission will not downshift). For example, if you are in DRIVE and are in third (direct) gear, when you tap the shift lever one time to the left (-), the display will show 4 (ERS 4 is direct gear). Another tap to the left (-) will shift the transmission down to ERS 3 (the added underdrive gear). When in the DRIVE position in fifth gear, the first tap to the left (-) will downshift the transmission and display 5 (ERS 5 is the same as normal fourth gear). Another tap to the left (-) will shift the transmission down to ERS 4 (direct gear). Warning!Do not downshift for additional engine braking on a slippery surface. The drive wheels could lose their grip and the vehicle could skid.

Screen Display 1 2 3 4 5* D Actual Gear(s) Allowed 1 1-2 1-3 1-4 1-5 1-5

* Applies to vehicles equipped with 5.7L engines only.
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Old 01-19-2011, 02:55 PM
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Re: ERS Question?? 5.7 L

Interesting, explains my experiences with the tow haul mode.
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Old 05-16-2011, 10:50 PM
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Re: ERS Question?? 5.7 L

I just had a problem tonight with my truck not wanting to get out of gear 4. I never use the ers and had to pull over to the side of the road and shut off my ignition in order to get the gear to reset. has this ever happened to anyone else?
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Old 05-16-2011, 11:55 PM
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Re: ERS Question?? 5.7 L

In Tow/Haul mode it usually requires very little load (ie, flat ground, coasting throttle), to engage the upper gear, (5th) overdrive.

It's quite different to the normal shift program
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