This is the automatic transmission oil dipstick for the GMC Sierra 2500. It lets you check the automatic transmission fluid (ATF) level from the engine bay, without getting under the truck, and reads Add, Full Cold, and Full Hot at operating temperature. Checking ATF level and condition regularly helps catch low fluid, contamination, or overheating before they damage the transmission.
The most important point is fitment by transmission. The dipstick length differs: about 28 inches for the 4L60E and about 32.5 inches for the 4L80E, and these are not interchangeable. Just as important, the Sierra 2500 and 2500HD were also offered with the Allison 1000 automatic behind the Duramax diesel, and this listing does not cover the Allison. So the live 'fits 1999 to the present' wording overstates coverage; the 4L60E and 4L80E apply to the earlier trucks (roughly 1999 to the mid-2000s), while newer heavy-duty trucks use different transmissions. Confirm your transmission and the correct length by VIN or RPO transmission code.
The live description had machine-translation errors (for example markings 'on GM-built distributors', which should read transmissions, and a mention of 'engine coolant', which is irrelevant to a transmission dipstick); it is reworded here, and the source page should be corrected. The copy also cites GM part numbers for the 4L60E and 4L80E dipsticks; treat those as a reference to confirm against your transmission, since the correct length depends on the exact transmission and pan.
| Item | Details |
|---|---|
| Transmission | 4L60E, 4L80E, or Allison, by VIN or RPO code. |
| Length | About 28 in (4L60E) or 32.5 in (4L80E). |
| Pan | A deep aftermarket pan may need a longer dipstick. |
Your transmission (4L60E, 4L80E, or Allison 1000), by VIN or RPO code
The correct dipstick length for that transmission
Whether your truck has an aftermarket deep transmission pan (which may need a longer dipstick)
The actual condition, since the spec reads like a new part but the listing says Used
| Item | Details |
|---|---|
| INCLUDED | The transmission oil dipstick as confirmed for your transmission and length; exact contents confirmed at order. |
| NOT INCLUDED | Dipstick tube, O-ring beyond the one fitted, or transmission fluid unless confirmed at order. |
| Tools You Need | Basic hand tools; the dipstick inserts into the existing transmission dipstick tube. Check ATF at operating temperature for an accurate Full Hot reading. |
This dipstick is offered for the GMC Sierra 2500, confirmed by transmission. Key fitment points:
| Vehicle | Compatibility |
|---|---|
| 4L60E | About 28 in (711 mm) dipstick |
| 4L80E | About 32.5 in (826 mm) dipstick |
| Allison 1000 (Duramax) | Not covered by this listing |
The correct dipstick depends on the transmission: about 28 inches for the 4L60E and about 32.5 inches for the 4L80E. The Sierra 2500 and 2500HD were also offered with the Allison 1000 automatic behind the Duramax diesel, which this listing does not cover. The 4L60E and 4L80E apply to the earlier trucks (roughly 1999 to the mid-2000s), so confirm your transmission and the correct length by VIN or RPO transmission code. We confirm the right part with you before shipping.
Not sure which dipstick your truck needs? Call (240) 301-0095 with your VIN or RPO transmission code. Our team confirms whether you have a 4L60E, 4L80E, or Allison, and the correct length, before your order ships.
Quality control for this part includes:
We inspect the probe, handle, and O-ring and confirm the correct transmission and length for your truck. Because the detailed material spec reads like a new aftermarket part while the listing says Used, we confirm the actual condition with you. If your truck has the Allison 1000 behind a Duramax, we route you to the correct, different part rather than this one.
| Part | GMC Sierra 2500 automatic transmission oil dipstick |
|---|---|
| For Transmissions | 4L60E or 4L80E (not interchangeable) |
| 4l60e Length | about 28.0 in (711 mm) |
| 4l80e Length | about 32.5 in (826 mm) |
| Not Covered | Allison 1000 (Duramax diesel) |
| Probe Material | 316-grade stainless steel |
| Handle Material | Black polypropylene, heat-resistant to 300 F |
| Graduations | Laser-etched Add, Full Cold, Full Hot |
| Probe Diameter | 0.18 in (4.6 mm) |
| Seal | Nitrile rubber O-ring |
| Condition | Used; confirm |
| Category | Transmission |
| Sku | vaz613 |
Contact (240) 301-0095 within 15 days of delivery.
