GMT800 Fluid Capacity & Service Interval Underhood Label – 5.3L LM7 / 4L60‑E / NP8 (NVG246 AutoTrac)

Description

Keep the Most-Used GMT800 Service Information Under the Hood

Stop searching through manuals and forum threads every time routine maintenance is due. This GMT Central Quick-Spec Fluid Capacity & Service Interval Underhood Label provides an easy-to-read reference chart for one of the most common GMT800 half-ton powertrain combinations.

This version is designed specifically for vehicles equipped with:

• LM7 — 5.3L Vortec 5300 gasoline V8
• M30 — Hydra-Matic 4L60-E four-speed automatic transmission
• NP8 — NVG246 two-speed AutoTrac transfer case

The label places frequently referenced fluid types, approximate capacities, and maintenance reminders in the engine compartment where they are readily available during service.

This is an original GMT Central product. It is not a reproduction of a factory GM label and should not be represented as an OEM maintenance decal.

Confirm All Three RPO Codes Before Ordering

This product is configuration-specific. Your vehicle must have all three codes listed below:

RPO codes are normally shown on the Service Parts Identification label. Depending on model and year, that label may be in the glovebox, center-console area, door opening, or another vehicle-specific location.

Use the GMT Central GM RPO Code Decoder to interpret your vehicle’s codes. The GMT Central VIN Decoder can help confirm the model year and engine, but the VIN alone may not identify every transmission and transfer-case configuration.

Vehicle Application Reference

This version is intended for selected 1500-series GMT800 vehicles when all three RPO codes match.

The year and model ranges are reference ranges, not universal fitment guarantees. GM offered several 5.3L engines, transmissions, and transfer cases during the GMT800 generation. The three RPO codes remain the controlling fitment test.

What the Label Covers

Important Capacity and Service-Interval Notes

The numbers shown on this product are intended as quick service references. They do not replace the proper fill and level-check procedures.

• Transmission: The amount added during a normal pan-and-filter service is not the same as the completely dry transmission capacity. Final fluid level must be verified using the correct warm-level procedure and dipstick.
• Transfer case: Fill to the proper fill-hole level using the specified fluid rather than relying only on a measured quantity.
• Axles: Capacities can vary with axle assembly, differential cover, body configuration, and production revision. The fill-plug level is the final control.
• Cooling system: Capacity differs between front-only and front-and-rear HVAC systems.
• Maintenance intervals: Towing, commercial use, frequent idling, short trips, dusty conditions, off-road use, and temperature extremes may require more frequent service.
• Replacement fluids: GM service-fluid recommendations can be updated after the vehicle was manufactured. Use a currently approved product that meets the appropriate GM specification.

This label is best used together with the owner’s manual, vehicle-specific service information, and the actual component fluid-level procedure.

Applications Not Included

This version is not intended for:

• Two-wheel-drive vehicles
• Vehicles without RPO NP8
• Vehicles equipped with the L59 FlexFuel 5.3L
• Vehicles equipped with the L33 high-output aluminum 5.3L
• Vehicles equipped with the LR4 4.8L
• Vehicles equipped with the LQ4 or LQ9 6.0L
• 1500HD, 2500, 2500HD, or 3500 models
• M32 4L65-E applications
• MT1 4L80-E applications
• Allison-equipped vehicles
• AWD Denali, Escalade, Escalade ESV, Escalade EXT, Silverado SS, or Sierra Denali configurations
• Vehicles with engine, transmission, transfer-case, axle, or cooling-system modifications

A different GMT Central Quick-Spec label should be used when any of the three primary RPO codes differ.

Product Details

• Quantity: one underhood maintenance-reference label
• Product line: GMT Central Quick-Spec
• Platform: GMT800
• Engine configuration: LM7 5.3L V8
• Transmission configuration: M30 4L60-E
• Transfer-case configuration: NP8 / NVG246 AutoTrac
• Premium water-resistant vinyl
• Matte UV-protective laminate
• Protection against normal exposure to water, sunlight, scratches, and handling
• Waterproof permanent adhesive
• Easy-peel backing
• Supplied trim-to-fit
• Original GMT Central design

This listing includes the maintenance-reference label only. It does not include fluids, filters, gaskets, drain plugs, service tools, replacement components, or additional underhood labels.

Trim-to-Fit Construction

The product is supplied trim-to-fit. Complete all trimming while the protective backing remains attached.

Use sharp scissors or a precision craft knife, a metal straightedge, and a protected cutting surface. Do not remove the adhesive liner until the label has been test-fitted and trimmed.

Installation

1. Confirm the LM7, M30, and NP8 RPO codes.
2. Review the printed label data before installation.
3. Select a flat, visible underhood location away from extreme heat and moving components.
4. Test-fit the label while the backing remains attached.
5. Trim carefully to the finished edge.
6. Clean the mounting surface with a residue-free cleaner appropriate for the material.
7. Remove grease, wax, silicone dressing, dirt, and loose paint.
8. Allow the surface to dry and cool completely.
9. Peel back a small portion of the liner and align the label.
10. Apply gradually from one side to the other while pressing outward to reduce trapped air.
11. Press firmly across the entire label, especially along the edges.
12. Allow the adhesive to set before washing or exposing the area to cleaners.

Do not install directly on an exhaust component, radiator tank, moving fan shroud section, or another surface exposed to excessive heat.

Shipping

Free shipping to all 50 U.S. states

Most products ship within approximately 2–5 business days. Typical delivery is approximately 6–13 days from order placement, depending on production time, carrier, and destination. Tracking information is provided when available.

Related GMT Central Resources

• GM RPO Code Decoder
• GM VIN Decoder and TSB Lookup
• GMT800 Platform Guide
• GMT800 SUV Buyer’s Checklist
• Request a Different GM Label

Frequently Asked Questions

Does this label fit every GMT800 with a 5.3L engine?

No. It fits only vehicles with the LM7 engine, M30 4L60-E transmission, and NP8/NVG246 AutoTrac transfer case. Other 5.3L engine and drivetrain combinations require a different label.

How do I confirm the correct version?

Locate the Service Parts Identification label and verify that LM7, M30, and NP8 are all present. Use the GMT Central RPO Code Decoder when you need help interpreting the codes.

Can I determine the correct label from the VIN alone?

The VIN can help confirm the year, vehicle, and engine. It may not independently identify every transmission, transfer case, axle, and HVAC configuration, so the RPO label remains the preferred fitment source.

Is this a genuine GM label?

No. This is an original aftermarket maintenance-reference product designed and manufactured for GMT Central. It is not a genuine GM label, factory option, or reproduction of an OEM decal.

Are the capacities exact?

The capacities are service-reference values. Actual refill quantity can vary according to how completely a component drains, installed equipment, axle or case revision, and previous modifications. Always use the applicable dipstick, fill plug, or service-level procedure to establish the final level.

Are the intervals official GM warranty intervals?

No. The label is a condensed maintenance aid. Vehicle-specific owner and service information, operating conditions, fluid updates, and severe-service requirements take precedence.

What transmission fluid should I use?

Use a currently approved fluid that meets the appropriate GM service specification for the 4L60-E. Do not confuse automatic-transmission fluid with the Auto-Trak II fluid required by the NP8 transfer case.

Does the NP8 transfer case use automatic-transmission fluid?

The NP8/NVG246 AutoTrac transfer case uses Auto-Trak II transfer-case fluid. Do not substitute ordinary transmission fluid solely because another GM transfer case uses it.

Does this fit 2500 or 3500 models?

No. Heavy-duty GMT800 models generally use different engines, transmissions, axles, fluid capacities, and maintenance requirements.

Is the label pre-cut?

No. It is supplied trim-to-fit so the installer can create a clean finished edge.

Where should I install it?

Choose a visible, relatively flat underhood surface away from excessive heat and moving parts. Common options include an upper radiator support, fan-shroud area, or another clean service-access location.

Maintenance and Liability Notice

This label is a convenience reference and does not replace the vehicle-specific owner’s manual, service manual, technical service information, professional diagnosis, or required safety procedures.

Always verify the correct fluid, final level, torque specification, and service procedure before operating the vehicle. Incorrect fluid selection, underfilling, overfilling, or an inappropriate service interval can cause component damage.

GMT Central is not affiliated with or endorsed by General Motors. General Motors, GM, Chevrolet, GMC, Silverado, Sierra, Tahoe, Suburban, Yukon, Yukon XL, Avalanche, AutoTrac, 4L60-E, NVG246, and related names and codes are used only to identify the intended vehicle configuration.