Envoy 4WD

[AlanTDickey]

I've got my dad interested in buying an Envoy, but I need to answer one question for him. He will use it occasionally off road and won't buy one unless it has a decent 4X4 low range. The GMC website, unless I'm missing something, nowhere references any low range capability at all for the Envoy. I called two dealers, and they both told me it definitely has a low range, but can't tell me what the Xfer case ratio is. I'm not sure if they even know what they're talking about. I'd appreciate any info anyone has about the Envoy's low range, if it exists despite the lack of mention on the GMC website.

Thanks in advance.

[Wxman]

It has an NVG 226 transfer case.

The New Venture Gear model NVG 226 RPO NP8 transfer case is a two speed automatic, active, transfer case. The NVG 226 provides five modes, Auto 4WD, 4 HI, 4 LO, 2 HI and Neutral. The Auto 4WD position allows the capability of an active transfer case, which provides the benefits of on-demand torque biasing wet clutch and easy vehicle tuning through software calibrations. The software calibrations allow more features such as flexible adapt ready position and clutch preload torque levels. The technology allows for vehicle speed dependent clutch torque levels to enhance the performance of the system. For example, the system is calibrated to provide 0-5 lb ft of clutch torque during low speed, low engine torque operation, and predetermined higher torque for 32 km/h (20 mph) and greater. This prevents crow-hop and binding at low speeds and provides higher torque biases at higher vehicle speeds, to enhance stability.

 

There is a 2.69:1 reduction in 4LO.

 

Hope this helps

[AlanTDickey]

Wxman:

You are awesome! Thanks for the info. One last question: do you know the final crawl ratio in 4WD low?

Thanks again.

[Wxman]

Wxman:

You are awesome!  Thanks for the info.  One last question:  do you know the final crawl ratio in 4WD low?

Thanks again.

 

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Well, I guess that would depend on the diff one chose. 1st gear is 3.059:1 and the transfer case in low is 2.69:1. The factory diffs are either 3.42, 3.73 or 4.10

 

Happy shopping