Shifting issue
Thread Starter
Pro
Joined: Dec 2005
Posts: 621
Likes: 2
From: Stillwater Minnesota
Shifting issue
My friend wants me to help him with his car. It's actually a 1999 Suburban w/ 350 engine and 4L60E tranny. Wanted to see what you guys thought this might be on the forum.
Here's the issue. Car runs like a champ. Shifts smooth whole nine yards. However, when driving up a hill or the engine is under load it doesn't know to downshift for some reason.
He says to recreate the problem, he will put the car on cruise and go up a decent hill. The engine lugs but never downshifts.
Do you guys have a good guess here?
Here's the issue. Car runs like a champ. Shifts smooth whole nine yards. However, when driving up a hill or the engine is under load it doesn't know to downshift for some reason.
He says to recreate the problem, he will put the car on cruise and go up a decent hill. The engine lugs but never downshifts.
Do you guys have a good guess here?
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
My friend wants me to help him with his car. It's actually a 1999 Suburban w/ 350 engine and 4L60E tranny. Wanted to see what you guys thought this might be on the forum.
Here's the issue. Car runs like a champ. Shifts smooth whole nine yards. However, when driving up a hill or the engine is under load it doesn't know to downshift for some reason.
He says to recreate the problem, he will put the car on cruise and go up a decent hill. The engine lugs but never downshifts.
Do you guys have a good guess here?
Here's the issue. Car runs like a champ. Shifts smooth whole nine yards. However, when driving up a hill or the engine is under load it doesn't know to downshift for some reason.
He says to recreate the problem, he will put the car on cruise and go up a decent hill. The engine lugs but never downshifts.
Do you guys have a good guess here?
Try the Suburban forum.
Melting Slicks
Joined: May 2000
Posts: 2,498
Likes: 4
From: Brentwood TN
First thing to do is reset the control cable between the throttle and transmission. Maybe someone already has the instructions on how to do it. It's easy to do and may solve the problem in under five minutes.
Charlie
Charlie
