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Description
About the Hummer H2 Engine
The 2003 to 2007 Hummer H2 used GM’s 6.0L (364 ci) V8, the LQ4 from the LS truck-engine family. It is a naturally aspirated, overhead-valve (pushrod) V8 with a cast iron block and aluminum heads, sequential port fuel injection, and about 325 hp and 365 lb-ft, paired with a 4-speed automatic. It is a strong, simple, easy-to-service engine. This is a used engine, inspected before it ships.
A few corrections from the live page. The description named the engine ‘LM7’, but the LM7 is the 5.3L V8; the H2’s 6.0L is the LQ4 (the 2008 to 2009 H2 used the 6.2L L9H). The live feature list also claimed Variable Valve Timing and balance shafts; the early 6.0L LQ4 has neither (VVT arrived on later truck V8s, and LS V8s do not use balance shafts), so those claims were dropped. Confirm the RPO and year by VIN.
What To Confirm
| Item | Details |
|---|---|
| Engine | 6.0L LQ4 (not LM7/5.3L). |
| Year / RPO | By VIN. |
| Swap | ECM and emissions for the year. |
Things to Confirm Before Ordering
The 6.0L LQ4 (not the 5.3L LM7)
Your year and RPO, by VIN
ECM matching and emissions for a swap
Accessory drive and transmission for your application
What Is Included, What Is Not Included
| Item | Details |
|---|---|
| INCLUDED | The used 6.0L LQ4 long block as confirmed; ancillaries vary, confirmed at order. |
| NOT INCLUDED | Transmission, ECM, wiring, and accessories unless confirmed at order. |
| Tools You Need | A professional installer; ECM matching and emissions compliance for the year. |
Vehicle Compatibility
This 6.0L V8 (LQ4) is offered for GM 6.0L V8 applications, including:
| Vehicle | Compatibility |
|---|---|
| Hummer H2 | 2003 to 2007 (6.0L) |
| GM HD trucks | Silverado / Sierra 2500 HD and 3500 |
| GM full-size SUVs / vans | Tahoe / Suburban / Yukon XL, Express / Savana, Avalanche |
This 6.0L LQ4 is offered for the H2 and other GM 6.0L V8 trucks and SUVs (Silverado and Sierra HD, Tahoe, Suburban, Yukon XL, Express, Savana, Avalanche). The live list also named the Hummer H1 (diesel), TrailBlazer and Envoy (inline-6), and Colorado (4 or 5-cylinder), which did not use this 6.0L gas V8; those were removed. Confirm fitment by RPO and year. We disclose the donor details before shipping.
Fitment Assistance
Not sure this 6.0L fits your truck? Call (240) 301-0095 with your VIN or RPO. Our team confirms the engine, year, and donor details before your order ships.
Condition and Inspection
Quality control for this part includes:
Confirmed as the 6.0L LQ4
Compression checked where possible
Block, heads, and valvetrain inspected
Donor details disclosed
What is included confirmed with you before shipping
This is a used V8 engine. We confirm it is the 6.0L LQ4, inspect the block, heads, and valvetrain, and disclose the donor details. An engine swap is a major job; use a professional installer and match the ECM for the year.
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