Are there any problems with GMC 8 speed transmission?
GMC vehicles with 8-speed 8L90 and 8L45 transmission can develop intermittent problems regarding the transmission temperature. Symptoms that drivers can experience include improbable temperature readings to overheating, slipping, and harsh shifting. These issues will trigger a check engine light, so there will be a fault code stored in DTC memory.
What are the symptoms of a GMC transmission problem?
GMC vehicles with 8-speed 8L90 and 8L45 transmission have a widespread problem known as ‘Chevy shudder.’ The symptoms that may happen during gear shifts and typically include shaking, juddering, and harsh shifting. In severe conditions, it may be followed by a noticeable clunk.
What kind of transmission does a GMC Sierra have?
Just started doing this last night. My truck’s a 94 GMC Sierra 1500 4×4. Not sure what the specific transmission is but it is an automatic. First gear sticks until I left off the gas, then it’ll shift. What the heck is wrong with my truck?
Why does the first gear stick in a GMC Truck?
First gear sticks until I left off the gas, then it’ll shift. What the heck is wrong with my truck? Allison Specialist! making any odd noises? What does the fluid look like?…I think you have the 4l60e.
Are there any problems with the GMC automatic transmission?
Overheating is a concern on GMC trucks that are used for towing or hauling heavy loads frequently. GMC vehicles that use a 4-speed automatic 4L60E or 4L65E transmission can develop a problem with gear shifts. This issue will manifest itself as improper gear changes that take too long to happen.
GMC vehicles with 8-speed 8L90 and 8L45 transmission can develop intermittent problems regarding the transmission temperature. Symptoms that drivers can experience include improbable temperature readings to overheating, slipping, and harsh shifting. These issues will trigger a check engine light, so there will be a fault code stored in DTC memory.
What causes a GMC to not shift gears?
Vehicle won’t move in any gear. Low transmission fluid level – One of the most common issues that prevent a GMC vehicle from shifting when placed in the Drive (D) or Reverse (R) is a low transmission fluid level. Shifter link – The shifter link connects the shifter to the transmission valve body.
When did GM stop making their own transmissions?
Through the 1950s, all makers were working on their own automatic transmission, with four more developed inside GM alone. All of GM’s early automatic transmissions were replaced by variants of the Turbo-Hydramatic by the 1970s. 1968-1971 Torquedrive – Chevrolet ( Camaro and Chevy II, Nova.