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Engine coolingPart report

2000 GMC Sonoma Engine cooling Problems

Complaints
6about this part
Share
4%of 136 total for the year
Median mileage
66,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 6 complaints about the engine cooling of the 2000 GMC Sonoma, 4% of the 136 complaints for this model year. Where a mileage was given, the median is 66,000 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.

“Consumer states oil cooler line went bad and engine has a rattle when it is cold, also the rocker arm makes a noise when it is hot. The rear differential pinion seal was bad. It was replaced, but there is still a bad growl coming from the rear end when the consumer accelerates. The left door rattled, the right upper door hinges bushings were bad, there was no grease on the front ball joints, the front actuator motor for the 4-wheel drive was replaced.”

NHTSA complaint #566258, filed 2002-06

“Consumer states in the winter time with a coat on, it is difficult to fasten the drivers seat belt, the steel end of the belt is bent too much toward the drivers hip, requiring the driver to push the belt toward the center of the vehicle so the other end of the belt can be inserted into the buckle, the local dealer refused to install a new belt because the replacement would be identical to the factory original. The consumer stated then engine oil drain plug was designed too small, it has a hexagon head. The socket or wrench slips on the plug head and damages the plug. …”

NHTSA complaint #566918, filed 2002-08

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
200313%
200247%
200178%
200064%
199947%
1998117%
199787%
19961913%
19952612%
1994125%
1993712%
199228%
1991414%

Other parts of the 2000 GMC Sonoma

Body and structure
41 complaints
Brakes
35 complaints
Latches, locks and linkages
12 complaints
Seats
11 complaints
Air bags
10 complaints
Suspension
8 complaints
Transmission and drivetrain
8 complaints
Equipment
5 complaints
Fuel system
5 complaints
Visibility (wipers, defrost, mirrors)
5 complaints
Tires
4 complaints
Exterior lighting
3 complaints

← All problems reported for the 2000 GMC Sonoma

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