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Engine coolingPart report

2007 GMC Sierra 2500 Engine cooling Problems

Complaints
2about this part
Share
2%of 83 total for the year
Median mileage
23,325miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 2 complaints about the engine cooling of the 2007 GMC Sierra 2500, 2% of the 83 complaints for this model year. Where a mileage was given, the median is 23,325 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.

“Check engine light comes on and engines goes into reduced power mode. Doesn't have enough power to go over 40 MPH. While pulling a trailer the engine doesn't have enough power to climb hills or go over 25 MPH. I have taken to dealer twice and they say GM is aware of the problem but they don't have a fix for it. It's not safe having a vehicle that breaks down in -15 degree weather and having the dealer tell you that there is no fix for the problem and to just keep driving the vehicle.”

NHTSA complaint #10252460, filed 2008-12, 46,000 miles

“The contact owns a 2007 Gmc SIERRA 2500. The contact stated that the vehicle's coolant is constantly low. The warning light indicated a low coolant level. The dealer diagnosed the cause of failure as the o ring missing from the fly wheel housing coolant. The dealer repaired the vehicle, however, the low oil indicator light illuminated. The dealer diagnosed the cause of failure as an oil filter leak. The seals and oil filter were replaced. When the contact picked up the vehicle, he noticed an oil leak. The vehicle has not been repaired. The current mileage is 4,000 and failure mileage was 650.”

NHTSA complaint #10196006, filed 2007-07, 650 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
202212%
202023%
201926%
201413%
201312%
201112%
200913%
200812%
200722%
200658%
20051311%
200496%
200353%
2002118%
20012116%
200048%
199817%

Other parts of the 2007 GMC Sierra 2500

Air bags
49 complaints
Other or unknown
9 complaints
Body and structure
7 complaints
Brakes
6 complaints
Electrical system
5 complaints
Fuel system
3 complaints
Seat belts
3 complaints
Steering
3 complaints
Suspension
3 complaints
Tires
2 complaints
Transmission and drivetrain
2 complaints
Engine
1 complaints

← All problems reported for the 2007 GMC Sierra 2500

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 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