Is the 2002 Yukon XL having transmission problems?
Our 2002 Yukon XL has been having transmission problems. We are now on number 4 and counting… Four Times in the shop for transmission problems. We got our truck back from the last service in June with 49,000 miles.. we now have 63,000 miles and yes… transmission problems again…. “Hard Shifting” Code 748 was the number this time.
What kind of transmission does GMC Yukon have?
My dad has a 2002 yukon sle with the 4L60E automatic Tranny in it and we were driving on the highway and hear a clunk and then we hear grinding gears. Now the truck is missing Park, Reverse, OverDrive, and my brother took it to the garage today on the way it blew a tranny line and it made the exaust catch on fire.
Why does my GMC Yukon come out of first gear?
At 2,430 miles, while in the Sierras outside Yosemite at 2500 feet, the transmission heated up to almost 200 degrees (outside temp only 78), and it came out of gear again. This time it would not shift out of first gear until we let it sit overnight. Drove it back to the dealer. Now they are talking about putting in a new transmission.
Why is the reverse gear not working on my 4L60E?
Valve Body Issues- A bad valve body can make the reverse gear not work in the 4L60E. If the valve body ends up warped, or if the gasket fails, it’s entirely possible that the gear won’t engage. Booster Valve- A bad booster valve can leave you without reverse in a hurry. Sun Shell- A broken sun shell will cause…
Why does my transmission have a jerky shift?
Over time, the frictional properties of the fluid can degrade, leading to elongated, jerky or inconsistent shifts. In this case, it’s time for a fluid change. How do you know for sure the fluid is worn? The only definite way to find out is to conduct used fluid analysis. However, fluid that smells burnt or appears dirty is likely due for a change.
What causes a transmission to shift so hard?
It could be a leaky seal or other mechanical defect. Otherwise, adding new fluid won’t ultimately solve the problem. Transmission fluid that has aged and lost some of its frictional properties can also lead to poor shift quality.
How does cold weather affect transmission shift quality?
That translates into solid, confident shifts day after day and long transmission life. Cold weather can reduce shift quality. When the temperature drops, transmission fluids with poor cold-flow properties can thicken and cause elongated and hard shifts until the fluid has warmed up enough to flow properly.
What causes a 4L60E to lose its reverse?
Sun Shell- A broken sun shell will cause the 4L60E to lose reverse. It is known to snap where the splines meet the shell itself. Here’s a short but sweet YouTube video that covers some of the most common issues that cause the 4L60E to lose reverse.
Where to buy automatic transmission for GMC Yukon?
Safeguard your SUV’s vital transmission system by investing in a new automatic transmission for GMC Yukon from AutoZone. Our top-notch selection of GMC Yukon automatic transmission parts ensures that you get the right product at the right price.
How often does a GMC Yukon XL need to be changed?
by Matt Scheer. According to the Haynes Repair Manual, the GMC Yukon XL needs to have the transmission fluid and filter changed every 30,000 to 40,000 miles or every two years (whichever comes first). If the Yukon is being used frequently for towing, this increases to every 20,000 miles.
What is the diysave10 code for GMC Yukon?
Use Code: DIYSAVE10 Online Ship-to-Home Orders Only A large SUV that’s shown a surprising amount of changeability to adapt to buyers’ needs, your GMC Yukon demonstrates strong road performance and numerous high-class features. Safeguard your SUV’s vital transmission system by investing in a new automatic transmission for GMC Yukon from AutoZone.
Where to buy a 2002 GMC Yukon Denali?
2002 Yukon Denali listings within 50 miles of your ZIP code. Get answers to buy with confidence. Save when you purchase multiple reports. Get free quotes from dealers near you.
Is the GMC Yukon XL a registered trademark?
2002 GMC Yukon/Yukon XL Owner’s Manual Litho in U.S.A. Copyright General Motors Corporation 6/18/01 Part Number X2216 A First Edition All Rights Reserved ii GENERAL MOTORS, GM, the GM Emblem, GMC, the GMC Truck Emblem and the name YUKON are registered trademarks of General Motors Corporation.
Who is the owner of the GMC Yukon?
GENERAL MOTORS, GM, the GM Emblem, GMC, the GMC Truck Emblem and the name YUKON are registered trademarks of General Motors Corporation. This manual includes the latest information at the time it was printed.
Where is the power lumbar control on a GMC Yukon?
1-5 Power Lumbar Control (If Equipped) If your vehicle has this feature, the four-way control is located on the outboard side of the seat. To increase or decrease support, press and hold the front or rear of the control. Let go of the control when the lower seatback reaches the desired level of support.