how to change a thermostat on a 1999 pontiac grand am 3.4l

185

Asked by Aug 12, 2007 at 07:05 PM about the 1999 Pontiac Grand Am 4 Dr SE Sedan

Question type: Maintenance & Repair

2 Answers

15,135

Hi aurura2006, Locate the thermostat housing by following the top radiator hose from the radiator to the engine block. You'll find a round casting connected to the intake. Simply remove those bolts and place a new thermostat in the housing, clean off the old gasket material and replace the gasket and sealer. Bolt it back on making sure to tighten the bolts evenly so you don't crack the housing. The trick is getting to the housing because the air intake system is in the way. Loosen the air intake system and pull it back out of the way. There are some small water coolant lines underneath that can be a pain to get off and back on. Good luck!

2 of 2 people found this helpful.
185

I HAD GREAT TROUBLE GETTING THE BACK BOLT OUT OF THE COVER FOR THERMOSTAT IS THERE A PARTICULAR TOOL WHICH COULD HELP IN THIS REMOVAL?

16 of 16 people found this helpful.

Your Answer

Pontiac Grand Am Experts

  • #1
    tenspeed
    Reputation
    7,880
  • #2
    John Saffrahn
    Reputation
    1,610
  • #3
    Tom Demyan
    Reputation
    1,580
View All

Related Models For Sale

Used Pontiac Grand Prix
11 Great Deals out of 2,561 listings starting at $1,750
Used Pontiac Firebird
11 Great Deals out of 761 listings starting at $2,500
Used Chevrolet Camaro
456 Great Deals out of 31,180 listings starting at $3,550
Used Chevrolet Impala
533 Great Deals out of 34,789 listings starting at $990
Used Ford Mustang
560 Great Deals out of 36,486 listings starting at $1,500
Used Toyota Camry
925 Great Deals out of 89,681 listings starting at $300
Used Honda Accord
1,099 Great Deals out of 65,582 listings starting at $561
Used Honda Civic
692 Great Deals out of 63,647 listings starting at $999
Used Chevrolet Monte Carlo
8 Great Deals out of 1,219 listings starting at $1,488
Used Chevrolet Malibu
1,027 Great Deals out of 62,750 listings starting at $880

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.