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Under the air filter in the air cleaner box

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Q: Where is your ecu on your 99 Pontiac Grand Prix gt?
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Related questions

Where is the low pressure ac valve on a 99 Pontiac grand prix?

The low pressure port on the 99 Grand am is on the passenger side. It is right against the firewall.


Is a Monte Carlo engine compatiable with a 99 Pontiac grand prix gt?

If it is an equivalent year/bodystyle, yes


Brake line diagrams for a 99 Pontiac grand prix se?

The brake diagrams, for your 1999 Pontiac Grand Prix SAE, can be obtained from most General Motors dealerships. The brake diagram can also be found at most auto-parts stores.


Where is the thermostat on your Pontiac grand prix gt 99?

Look where the upper radiator hose enters the block. It's under there.


Did a 1999 Pontiac come with a 3100 engine?

The 99 Pontiac Bonneville, Firebird and Grand Prix came with the 3.8 engine. The Sunfire came with the 2.2 or the 2.4. The Montana came with the 3.4. The Grand Am came with the 2.4 or the 3.4. The Firebird Trans Am and the Firebird Formula, the 5.7. Only the Grand Prix SE came with the 3.1.


Wiring info 99 grand prix?

A complete wiring diagram, with wiring information, for your 1999 Pontiac Grand Prix can be obtained from most General Motors dealerships. The wiring diagram and information can be found in automotive service manuals.


Your 99 grand prix shifts hard when it is warm?

Some 99 Grand Prix vehicles will shift hard when it is warm. Not all of these vehicles will do this.


Is the transmission the same in the 99 supercharged grand prix gtp as in the 2000 supercharged grand prix gtp?

Yes


How do you replace a fuel pump on a 1999 Pontiac Grand Prix?

in a 99 there is easy access in the trunk, if u pull out the interior you will see it toward the back seats.


Are 1999 grand prix 3.1 engines interchangable with any other cars?

Yes there's the base 99'' Pontiac grand prix se with the 3.1 liter 160 hp then there's the grand prix gt with the 3.8 liter 200 hp then the top of the line GTP 3.8 liter supercharged 260 hp.


How fast is a 99 grand prix gt?

fast.


Where can you find a diagram for flushing cooling system in 99 Pontiac grand prix?

Buy a kit at Wal-Mart or auto parts comes with fitting adaptors and instructions