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EnginePart report

2003 Pontiac Grand AM Engine Problems

Complaints
17about this part
Share
5%of 325 total for the year
Median mileage
136,000miles
Trend
RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.

NHTSA recorded 17 complaints about the engine of the 2003 Pontiac Grand AM, 5% of the 325 complaints for this model year. Where a mileage was given, the median is 136,000 miles. 1 of these say a crash was involved, according to the filers.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“My ignition cylinder switch is making my car to stall and shut off while I am driving and I had it replace on 4/8/15 and was driving and it not fix, my car has cut off on me while driver 3 time since I got it from the dealership I am not driving it and what the dealership to send a tow to pick the car up. I am not safe in the car and spent $377.00 for labor and the part for it not to function correctly. I had my key replaced on a recall and when I got that service my ignition locked and the key would not turn the car on.”

NHTSA complaint #10705146, filed 2015-04, 242,796 miles

“I had 2 kids in the car,the accelerator pedal stuck,car kept speeding up.. I was using both feet on brake & er brake as well!! I was swerving in & out of traffic,running red lights & praying for our lives,we got up to 85 miles per hour in a 35mph zone!! The car was revving out of control & black smoke was coming out from under the hood! I managed to slam it into park & we all jumped out & ran,very frightening & almost ended in a collision. The intake manifold gasket cracked at 1yr old and 10,000 miles,the tires needed resealing at 5000 miles. Ridiculous!!”

NHTSA complaint #10596041, filed 2014-06, 20,000 miles

“Coolant leaked into engine caused problems, wouldn't start half the time, couldn't fill up without gas pump cutting off constantly (took 20 minutes to fill up). Took car to dealer and other shops spent tons of money problem not solved. Got so feed up with this car I pulled the tags and bought a honda. It is really unfair how the manufacturer of this car was allowed to get away with putting out such an inferior product. There should have been a major recall on any number of these problems. I was never notified of any recalls or the class action law suit.”

NHTSA complaint #10500953, filed 2013-03, 50,000 miles

“Hi, my grandam overheated while I was driving. I noticed that the coolant compartment was empty. I did not receive a low coolant warning from the car system. I had topped off my coolant compartment about two months ago. When I look at the engine block, I can see that there is a trail of coolant coming out the engine gasket. I did some googling and noticed that this is a common problem with the grandams and that there was a class action lawsuit filed against GM a couple years ago. I do not feel safe driving this vehicle as I worry if the engine will catch fire.”

NHTSA complaint #10490674, filed 2013-01, 99,500 miles

“Bought the vehicle used. 2003 Pontiac Grand Am 3.4l v6. Constant ticking from hazard light switch. Grounding problems. Looked for recalls at GM dealership. No recalls on the problem. No choice but to remove hazard light fuse until repair. Should have been covered by GM. Gonna cost us $500! The transmission cooling lines rotted away causing coolant spraying everywhere causing white smoke and overheating of the engine. Spraying the serpentine belt and water pump. With visual inspection and touching confirmed spot. 3/4 of reservoir is leaked out causing rust on sub frame. …”

NHTSA complaint #10552581, filed 2013-11, 236,000 miles

Related service bulletins

Engine: other model years

YearComplaintsShare of year
20051010%
2004176%
2003175%
2002113%
200192%
2000101%
1999132%
199832%
199610%
199410%
199310%
199111%

Other parts of the 2003 Pontiac Grand AM

Electrical system
134 complaints
Exterior lighting
65 complaints
Vehicle speed control
35 complaints
Engine cooling
24 complaints
Air bags
20 complaints
Fuel system
20 complaints
Brakes
19 complaints
Visibility (wipers, defrost, mirrors)
16 complaints
Steering
14 complaints
Body and structure
14 complaints
Suspension
9 complaints
Other or unknown
8 complaints

← All problems reported for the 2003 Pontiac Grand AM

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology