2007 GMC Sierra Classic Transmission and drivetrain Problems
- Complaints
- 2about this part
- Share
- 11%of 18 total for the year
- Median mileage
- 9,022miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the transmission and drivetrain of the 2007 GMC Sierra Classic, 11% of the 18 complaints for this model year. Where a mileage was given, the median is 9,022 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.
“Why is GM recall 14121 limited to new vehicles? It has been a recurrent, common problem since long before 2000. Long before I bought my 2007 Gmc Sierra Classic 2500hd which is on the third repair. I just replaced a transmission cooler line in my driveway. Today. Which is steadily eroding by way of continuous transmission cooler leaks. It continuously coats the underside of vehicle, reducing life of belts and hoses. Gm dealers feel its not covered by 5/100k powertrain warranty, or 36k bumper-bumper warranty because it's a long time GM problem as well as warranties in general.”
NHTSA complaint #10701504, filed 2015-03, 18,000 miles“The truck after 40 miles started screeching from the front when going around corners,and was reported to the dealer sam swope, I was informed that it was normal, on the way to town the truck stalled and was towed for repair turns out the coil plug shorted out wires were replaced, next day the truck stalled again towed again turns out that booth catalytic converters were plugged,booth replaced. …”
NHTSA complaint #10250461, filed 2008-12, 44 milesRelated service bulletins
- 10028831Jun 1, 2015General motors: intermittent mil/ses/ dtc p2138 with reduced engine power (repair instrument panel (ip) to body harness connector). 2005-08 gm passengers cars/light duty trucks…
- 10112401Oct 9, 2013This Preliminary Information communication provides information to the technician about vehicles that have not engagement into drive, delayed, no engagement into reverse, and or…
- 10036204Oct 1, 2013Chevrolet/gmc: delayed or no drive and delayed or no reverse with dtc's, range inhibit. Model years 2001-2013. *pe updated on 06/08/2011. *kb updated on 06/16/2011. *kb updated…
- 10023751Feb 1, 2013Engine surge or stall at stop and/or dtc p0742 possible tcc applied. Equipped with allison lct1000 transmission rpo m74 or mw7. *nj updated 4/22/13.
- 10043185Nov 1, 2011Cadillac/chevrolet/gmc/hummer: some suvs and trucks are exhibiting a condition where by grinding/ratcheting type noise coming from automatic transmission when shifting into park…
- 10024601Mar 1, 2008Dtc u0101, no engine crank and no tech ii communication with tcm. Equipped with allison lct1000 (rpo-mw7) automatic transmission.
- 10024345Feb 1, 2008Eaton locking differential chatter shudder noise on turns, equipped with a locking rear differential rpo g80. *nj updated 7/17/2008.
- 10017464Jan 1, 2008Service 4wd light illuminated, diagnostic trouble code (dtc) c0374 set. *tt updated 10/05/07. *nj inspect wiring harness to transfer case speed sensors, replace wiring harness…
- 10023744Dec 1, 20074 wheel drive inoperative front axle will not engage - keywords clunk grind growl k2 k3 equipped with a 9.25 front differential. *nj updated 2/27/08.
Transmission and drivetrain: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2007 | 2 | 11% |
Other parts of the 2007 GMC Sierra Classic
12 complaintsFuel system
4 complaintsElectrical system
3 complaintsEngine cooling
2 complaintsSteering
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2007 GMC Sierra Classic
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