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Engine coolingPart report

2003 Montana 3670 RL Engine cooling Problems

Complaints
2about this part
Share
25%of 8 total for the year
Median mileage
98,500miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 2 complaints about the engine cooling of the 2003 Montana 3670 RL, 25% of the 8 complaints for this model year. Where a mileage was given, the median is 98,500 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

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

“On septemeber 10, 2010, the rear sliding door on my car (2003 pontaic Montana) came off the track. A passeneger had to hold the door until I pulled over. I noticed that there have been several recalls involving my 2003 pontaic Montana. I haven't received any notices. Dealers have encouraged me to but another car, stating that my car would cost $3000.00 to fix. It also has an oil pan leak, a squeek and interior trim falling out. I've replaced shattered windshield, brakes, tires. What can I do?”

NHTSA complaint #10355394, filed 2010-09, 100,000 miles

“My drivers seat button above the switch to move the seat into position keeps breaking I have replaced it 3 times!!! My fingers got pinched severely when it broke...I have owned this van for 4 years. Engine over heating, no radiator leaks, mechanic found intake gasket leaking into oil and also dripping out of the tailpipe. Mechanic will replace the intake gasket costing me almost $900 to fix of which I believe GM should pay me back for. They knew about this problem and never let the public know until I found out by doing my own search online. …”

NHTSA complaint #10292360, filed 2009-11, 97,000 miles

Engine cooling: other model years

YearComplaintsShare of year
2003225%

Other parts of the 2003 Montana 3670 RL

Suspension
5 complaintsBrakes
1 complaintsSeats
1 complaintsBody and structure
1 complaintsTires
1 complaintsTransmission and drivetrain
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaintsWheels
1 complaints

← All problems reported for the 2003 Montana 3670 RL

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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