GMC Troubleshooting Questions? Ask a Mechanic for Answers
hi there, I am Cam. Can I get your first name please? Can you tell me if you have a check engine light on? Also can you tell me what the condition of the transmission fluid is? If possible can you please be very specific on the colour? The shade, any particles like dark or shine bits all will help narrow this down.
Ok does it change more when hot or cold?
Ok, Is this the 4 speed or 6 speed?
Post your VIN and I can tell from the GM system what it is.
You have a 6 speed. Looking through the manual for any bulletins I don't see any. With no codes stored, I am thinking you have an internal transmission issue, possibly a sticking valve, failing bushing, piston, clutch pack or something along that line. MY question to you is this, what are you wanting to do then? I don't recommend the average owner start internal transmission repairs as there are many moving parts and even many techs won't touch them.MY suggestion honestly is to seek out a reputable transmission shop and consider repairs there.
Parts, the cost of a replacement is about 3200 for the unit complete with a good warranty. Repairs could range from(###) ###-####. Its really hard to say without deeper diagnosis.
IS there more information I can get you?
I am not sure if you have been to the site before, if not here is a brief rundown of how it works. I am not in an office, I am a technician in a GM dealer, third party contracted to the site. I only get paid for my time when you provide a rating of a positive nature.