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Showing results for tags 'tranmission'.
Found 4 results
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2021 2500hd trans problem?
Daler442 posted a topic in 2020+ Silverado HD & Sierra HD Troubleshooting
New to the site, have a 2021 2500hd with 6.6 gas. Yesterday was turning around in my driveway and heard a bang, then check engine light, trac light, reduced engine power, service parking brake lights all came on. I can run through the gear shift, but it won't engage any gears. When I have it in r or d if I touch the gas it revs up and speedo keeps going up. Looked at shift linkage and it does move, so I'm guessing a serious internal trans issue?? Anyone else have an issue like this? Thank you , Update, just pulled code p215b , output shaft speed correlation -
2001 gmc sierra crew cab bagged front and back, with c notch. on hard acceleration the oil cooler line on the transmission side keeps blowing out causing my fluid to go every where. When driving normally it’s fine but hard acceleration no. The metal clip on the transmission but the line blows out each time. And everytime I pull over, wait 15 minutes connect the line back and new fluid, and trans good if I drive nice and slow.
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2003 2500hd LB7 Tranmission overheating HELP!!
Rob McGinnis posted a question in Ask the GM Technician
I have a 2003 2500HD with the 6.6L LB7 duramax. It is currently 19F here in ohio and after plugging in the block heater for about 4 hours i started my truck. Engine temp was below 160, everything was running fine, but the check engine light was on, trans temp gauge was pegged aover 300F, and a message was on my dash that said TRANS HOT IDLE ENGINE. I let it idle for a while and it never cooled down. Drove it to the end of my apartment complex parking lot and it wouldnt shift out of first gear. Went back, parked it as it was time for me to go to work. Rarely use block heater. First time i used it since beginning of 2019. The next day(today) I went out to run diagnostics and to see what codes where being thrown. Started truck to see if trans temp was still pegged and the gauge went all the way up to red, then down to 160, then up to just below the red with no TRANS HOT MESSAGE. Drove it to gas station and it shifted hard. While idling at gas station for 5 mins the trans temp climbed into red, TRANS HOT message came across the dash and i limped it home in first gear(maybe quarter mile). Codes - P0380, P0700, P1621. Cleared codes and check engine light was still on. Could the block heater have anything to do with this at all? Maybe a malfunction from a short or something? Fluid is full, doesnt smell bad or seem burnt but i noticed a funny smell when walking away(maybe just paranoid) Please......help. -
I have a 2009 gmc sierra 1500 5.3l 4x4 with 54 thousand miles and recently it seems and feels like I've been having transmission and or torque converter problems. When I'm almost to a complete stop it feels like something just locks up and I can even let my foot off the brake pedal and not go anywhere until I press the gas pedal and start kinda moving, then it feels like something releases. Any advice or help would be greatly appreciated.
