These are two very different tools from the same brand, not close competitors. The Foxwell NT604 Elite (in the $100-$150 range) is an honest 4-system code reader with live data, but Foxwell’s own documentation confirms it has no bidirectional control and no service reset functions at all, not even oil reset. The Foxwell NT710 GM variant (in the $300-$350 range) confirms bidirectional control and 34+ reset functions, but only within its GM-specific scope, and its own ECU coding claim needs independent verification before you rely on it.

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The Short Answer

Best for General-Purpose Code Reading at a Lower Price: Foxwell NT604 Elite, an honest 4-system reader with live data.

Best for GM-Specific Bidirectional Control and Deep Resets: Foxwell NT710 (GM Variant), with 34+ confirmed reset functions.

Two Buyer Scenarios

You want an honest, general-purpose 4-system code reader with live data, at a lower price: the NT604 Elite is consistently documented and does exactly what Foxwell says it does, with no reset or bidirectional capability to worry about verifying.

You work primarily on GM vehicles and need bidirectional tests and service resets: the NT710 GM variant is the only one of the two that offers this, but Foxwell does not list ECU coding for it.

Foxwell NT604 Elite

The Foxwell NT604 Elite is a focused four-system code reader, confirmed consistently by Foxwell and Amazon for engine, ABS, SRS, and transmission diagnostics with real-time live data, at roughly a third of the price of Foxwell’s own NT710. Free updates come with no subscription, and broad protocol support covers a wide range of vehicles including light trucks and SUVs. It’s built for straightforward code reading rather than active commands, so a shop or DIYer specifically needing bidirectional control or service resets should look to the NT710 instead.

Pros	Cons
Four-system code reading confirmed consistently by Foxwell and Amazon, with no documentation gaps	No bidirectional control, which the NT710 GM variant confirms
Live data with real-time monitoring, confirmed
Free updates confirmed, no subscription	No service reset functions at all, not even oil reset, versus the NT710's 34+
Broad protocol support (KWP2000, J1850 VPW/PWM, ISO9141, CAN) for wide general vehicle compatibility
Covers light trucks and SUVs in addition to passenger cars	Wired USB connection only
Roughly a third of the NT710's price

Foxwell NT710 (GM Variant)

The Foxwell NT710 GM Variant delivers confirmed bidirectional control and 34-plus reset functions, including oil, battery, DPF, ABS bleed, injector, and TPMS resets, built specifically for Buick, Chevrolet, GMC, and Cadillac work. Named active tests span EVAP, ABS pump, windows, horn, and injector control, backed by lifetime free updates across Foxwell’s broader 50-plus brand range. This is a GM-specific, active-command tool at a meaningfully higher price than the general-purpose NT604 Elite, built for a shop that specifically needs to command components, not just read codes.

Pros	Cons
Bidirectional control confirmed for this GM-focused variant, unlike the NT604 Elite	ECU coding claim for this exact variant cannot be verified against an official Foxwell page; the related general NT710 explicitly does not support coding per Foxwell's own blog
34+ reset functions confirmed, including oil, battery, DPF, ABS bleed, injector and TPMS	GM-specific scope only; not usable for other brands, unlike the NT604 Elite's general compatibility
Named active tests include EVAP, ABS pump, windows, horn and injector control	Well over double the price of the NT604 Elite
The related general NT710 confirms lifetime free updates across a 50+ brand range	Easy to confuse with Foxwell's general-purpose NT710, which has different documented capabilities

NT604 Elite vs NT710 at a Glance

Specification	Foxwell NT604 Elite	Foxwell NT710 (GM variant)
Price	$100-$150 range	$300-$350 range
Display	4.3-inch color screen	Not listed (dedicated scan tool)
Vehicle connection	Wired USB	Not listed by the manufacturer
Vehicle scope	1996+ US, 2000+ EU/Asian, light trucks and SUVs, general brands	GM-specific: Buick, Chevrolet, GMC, Cadillac
Systems covered	Engine, ABS, SRS, Transmission (4-system scope)	See the bidirectional-test list below
Bidirectional control	Not listed by the manufacturer	Confirmed (EVAP, ABS pump, windows, horn, injector active tests)
Service resets	Not supported: no oil reset, battery registration, ABS bleeding, throttle relearn, ABS relearn	34+ confirmed (oil, battery, DPF, ABS bleed, injector, TPMS, throttle, basic IMMO)
ECU coding	Not offered	Claimed for this variant, but cannot be verified against an official Foxwell page; the general NT710 explicitly does not support coding per Foxwell’s own blog
Live data	Confirmed, real-time monitoring	Not separately itemized
Update policy	Free updates confirmed by Foxwell	Lifetime free updates confirmed for the general NT710 line

Bidirectional Control: The Core Reason These Are Different Tiers

Foxwell’s own documentation does not list bidirectional control for the NT604 Elite. The NT710 GM variant does, with named active tests including EVAP, ABS pump, windows, horn and injector control. This single capability is why the NT710 costs well over double; it is not a marginal feature, it is the entire reason to consider the pricier tool.

Service Resets: None vs 34+, Stated Plainly by Foxwell

Foxwell’s own documentation for the NT604 Elite is explicit that it does not support service resets: no oil reset, no battery registration, no ABS bleeding, no throttle relearn, no ABS relearn. The NT710 GM variant confirms 34+ reset functions covering exactly these categories. If your work involves performing service resets after routine maintenance, the NT604 Elite cannot do this at any price; only the NT710 can.

Vehicle Scope: General-Purpose vs GM-Specific

The NT604 Elite covers 1996+ US and 2000+ EU/Asian vehicles generally, including light trucks and SUVs, across a broad Engine/ABS/SRS/Transmission 4-system scope. The NT710 GM variant is scoped narrowly to Buick, Chevrolet, GMC and Cadillac. If your work is not GM-specific, the NT710’s added bidirectional and reset capability is not even available to you; the NT604 Elite’s broader compatibility becomes the relevant option by default.

ECU Coding: Not Listed for the NT710 GM Variant, Not Offered on the NT604 Elite

The NT604 Elite does not offer ECU coding, and Foxwell’s documentation is consistent on this. The NT710 GM variant’s Amazon listing claims coding, but Foxwell does not list it for this exact product, and Foxwell’s own blog states the general-purpose NT710 does not support coding. Pay close attention to this detail: if coding matters to your decision, don’t assume it works based on the listing alone.

Connectivity: Wired vs Unspecified

The NT604 Elite connects via wired USB, a simple, low-failure-point connection method for a budget code reader. The NT710 GM variant’s connection method is not separately itemized, though as a dedicated GM diagnostic tool it is reasonable to expect it may differ from the NT604 Elite’s basic wired setup; Foxwell does not list it, so check the listing if it affects your workflow.

Live Data: Confirmed on the NT604 Elite, Not Separately Itemized on the NT710

The NT604 Elite explicitly confirms real-time live data monitoring alongside its 4-system code reading. The NT710 GM variant’s own documentation does not separately itemize a live data function, focusing instead on its bidirectional tests and reset list; this does not necessarily mean it lacks live data, only that it is not called out as its own line item.

Consistency Between Documentation and Marketing

The NT604 Elite’s scope is listed consistently between Foxwell’s own documentation and its Amazon listing. The NT710 GM variant has the one ECU coding question noted above; weigh that against the otherwise-strong bidirectional and reset feature set.

Frequently Asked Questions

Does the Foxwell NT604 Elite have bidirectional control?

No. Foxwell’s own documentation does not list bidirectional control for this model.

Does the NT604 Elite support any service resets?

No. Foxwell’s documentation is explicit: no oil reset, no battery registration, no ABS bleeding, no throttle relearn and no ABS relearn.

Is the NT710 GM variant confirmed for ECU coding?

Its listing claims coding, but Foxwell does not list it for this exact product, and the related general NT710 explicitly does not support coding per Foxwell’s own blog. Don’t buy it specifically for coding.

Can the NT604 Elite be used on non-GM vehicles?

Yes, it covers general 1996+ US and 2000+ EU/Asian vehicles, unlike the NT710 GM variant, which is scoped specifically to Buick, Chevrolet, GMC and Cadillac.

Which is the better value for a basic 4-system code reader?

The NT604 Elite, since its documented scope matches its marketing with no gaps, at roughly a third of the NT710’s price.

Bottom Line

Choose the Foxwell NT604 Elite for an honest, general-purpose 4-system code reader with live data at a lower price, if you don’t need bidirectional control or resets. Choose the Foxwell NT710 GM variant if you work primarily on GM vehicles and need bidirectional tests and reset functions, but don’t buy it specifically for ECU coding. For more entry-level options, see our entry-level OBD2 scanner buying guide.

Affiliate Disclosure

SCG links to Amazon product pages for the scanners discussed above. SCG earns a commission on qualifying purchases made through these links.

Editorial Note

Every specification and capability claim above is sourced directly from the manufacturer’s own product pages, cross-checked against Amazon’s listing where applicable. Where a claim could not be verified, that is stated explicitly rather than assumed.