Very little heat in cold weather. Some heat at idle. I repld the t/stat & w/pmp.
What is your question?
The truck does not overheat and it runs ok. There are no codes in computer. Also coolant is new. Standard coolant. Not what came in the truck. Thanks
1 Reply
Popular Answer
pushrodon Oct 24, 2015
With engine at operating temperature, grasp heater hoses, BOTH should be hot enough that you have to let go!... If only one is that hot... Flush heater core!
Similar Questions
See more 1999 GMC Sonoma QuestionsWhat are the best GMC repair shops?
RepairPal Certified shops can diagnose and repair your 1999 GMC Sonoma. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Tuffy Tire & Auto Service Center - Grandview
1524 W 5th Ave
Columbus, OH
Closed
Opens 8:00 AM Thu
Excite Auto Repair & Towing
3430 Westerville Road
Columbus, OH
Closed
Opens 9:00 AM Thu
All In Auto Service
5200 Fisher Road
Columbus, OH
Closed
Opens 8:00 AM Thu
Tuffy Tire & Auto Service - Grove City
2131 Stringtown Rd
Grove City, OH
Closed
Opens 7:30 AM Thu
Blackstone Complete Auto Care
4800 Sinclair Road
Columbus, OH
Closed
Opens 9:00 AM Thu
Boyd's Tire & Service - Columbus
5263 Godown Rd
Columbus, OH
Closed
Opens 8:00 AM Thu
Tuffy Tire & Auto Service Center - Grandview
1524 W 5th Ave
Columbus, OH
Closed
Opens 8:00 AM Thu
Excite Auto Repair & Towing
3430 Westerville Road
Columbus, OH
Closed
Opens 9:00 AM Thu
All In Auto Service
5200 Fisher Road
Columbus, OH
Closed
Opens 8:00 AM Thu
Thank you. I appreciate the info.
✔ï¸