2015 GMC Sierra 1500: A/C not working
Common wear/failure (not a recall)
Symptoms
Owners of the 2015 Sierra 1500 report: a/c not working. CarComplaints.com lists 42 owner complaints, average mileage 61,950 miles.
NHTSA has 50 owner complaints for the 2015 Sierra 1500 in this area. Examples:
- NHTSA complaint ODI #11760877 (filed 08/31/2026): “My 2015 gmc sierra 1500 recently started having all the symptoms under gm internal recall number 18289. i lose my power steering briefly and the electronics turn off momentarily. i lose dash, ac, radio and gps. it comes back on within a second or two and on…”
- NHTSA complaint ODI #11673860 (filed 07/16/2025): “When parking and turning the wheel the truck stalled, radio turned off and on, ac stopped working, battery reading dropped. maybe an electrical issue since it happens continuously, while making turns at slow speeds the truck wants to turn off, lights dim then …”
Likely causes
Sources do not establish a single root cause; diagnosis is needed. Owner-reported fixes are listed below.
Fix, in plain English
Most common owner-reported solutions on CarComplaints.com: replace condenser (21 reports) replace compressor (6 reports) replace entire AC unit (5 reports) replace A/C line to pump (2 reports) replace condenser, compressor, and flush evaporator (1 reports) AC /. Check for open recalls and extended warranty coverage with a dealer before paying out of pocket.
DIY difficulty: Pro
Opening the A/C system requires refrigerant recovery equipment, and US EPA Section 609 certification is required to service vehicle A/C for compensation. (Our assessment.)
Cost
CarComplaints.com owners report a typical repair cost of about $1,310 (owner-reported average, not a quote).
Typical parts (search links, no affiliate codes)
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