Buick Rainier Engines by Year

The Rainier replaced the Bravada as GM's premium GMT360 SUV, with the 4.2 inline-six or a 5.3 V8.

Pick a year to see every engine offered that model year, with its code, rated horsepower and the trims it came in. Each engine links to its full specs.

Jump to a year

Rainier / GMT360 (2004–2007): 2004 · 2005 · 2006 · 2007

Rainier / GMT360 (2004–2007)

2004 Rainier engines

Engine	Rated	Offered in
4.2L / 256 inline-six (LL8)	275 hp net	CXL (2WD/AWD)
5.3L / 325 V8 (LM4)	290 hp net	CXL (option)

2005 Rainier engines

Engine	Rated	Offered in
4.2L / 256 inline-six (LL8)	275 hp net	CXL (2WD/AWD)
5.3L / 325 V8 (LH6)	300 hp net	CXL (option)

2006 Rainier engines

Engine	Rated	Offered in
4.2L / 256 inline-six (LL8)	291 hp net	CXL (2WD/AWD)
5.3L / 325 V8 (LH6)	300 hp net	CXL (option)

2007 Rainier engines

Engine	Rated	Offered in
4.2L / 256 inline-six (LL8)	291 hp net	CXL (2WD/AWD)
5.3L / 325 V8 (LH6)	300 hp net	CXL (option)

Working on one of these engines?

• Engine displacement from bore and stroke
• Static and dynamic compression ratio
• Which camshaft for your build
• What size carburetor
• Horsepower to torque at any RPM
• Torque converter stall speed

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