1994 GMC 1500 2x4 4l60e prob

ArcticCat9203 · 08-25-2009, 12:28 PM

I have a 1994 GMC Sierra 1500 2x4 pickup. Basically this is whats happening. I was driving one day and noticed that everytime i let off the gas it would down shift for some reason then when i hit the gas it would jump back in gear and keep going. I was alert, but didnt pay to much attention. About 2 days later i was on the highway when all of a sudden i hit the gas and got to 35 mph and it felt like it went into neutral. Id let off and get back to 35 mph and it would be drivable but as soon as i got to 35 it would go in neutral. I got it home that night after being towed. I drove it up the road and it did the same thing. I came home and bought a new transmission filter and gasket and fluid. Changed it all and took it for a ride. I can now get to 45 mph then it goes into neutral. Its a automatic transmission. It shifts correctly at 25 mph but it feels like when it needs to be shifting at 35 it wont. 2nd gear rides out till 45 mph now and then goes in neutral. I was wondering if maybe it was a sensor and something small. Dont really want to spend 1000$ on another transmission Please reply with any thoughts you may have

ArcticCat9203 · 08-25-2009, 12:35 PM

It has a 4.3L Vortec V6 in it with a 4L60e transmission. 2x4

BernieB · 08-25-2009, 12:36 PM

Never a good idea to post your phone number publicly like that. You get all kinds of nuts calling at all hours.

gmctrucks · 08-25-2009, 02:22 PM

Before you take it out try a can of Lucas the stuff is good.

ArcticCat9203 · 08-26-2009, 09:41 AM

What exacly is the product called you recommend. Lucas ??

bradrhale · 08-26-2009, 10:56 AM

Transmission Fix : Lucas Oil

i believe that is what gmc is talking about.

ArcticCat9203 · 08-26-2009, 11:54 AM

ok thank you i will give that a try do i just add it to my tranny or do i need to drain all the fluid first

BernieB · 08-26-2009, 02:52 PM

Just follow the directions on the bottle.

ArcticCat9203 · 08-27-2009, 01:34 PM

ok just bought a bottle today am going to try it soon

08-25-2009, 12:28 PM	#1
ArcticCat9203 Junior Member Join Date: Aug 2009 Posts: 5	1994 GMC 1500 2x4 4l60e prob I have a 1994 GMC Sierra 1500 2x4 pickup. Basically this is whats happening. I was driving one day and noticed that everytime i let off the gas it would down shift for some reason then when i hit the gas it would jump back in gear and keep going. I was alert, but didnt pay to much attention. About 2 days later i was on the highway when all of a sudden i hit the gas and got to 35 mph and it felt like it went into neutral. Id let off and get back to 35 mph and it would be drivable but as soon as i got to 35 it would go in neutral. I got it home that night after being towed. I drove it up the road and it did the same thing. I came home and bought a new transmission filter and gasket and fluid. Changed it all and took it for a ride. I can now get to 45 mph then it goes into neutral. Its a automatic transmission. It shifts correctly at 25 mph but it feels like when it needs to be shifting at 35 it wont. 2nd gear rides out till 45 mph now and then goes in neutral. I was wondering if maybe it was a sensor and something small. Dont really want to spend 1000$ on another transmission Please reply with any thoughts you may have Last edited by ArcticCat9203; 08-25-2009 at 01:17 PM.

08-25-2009, 12:36 PM	#3
BernieB Senior Member Join Date: Jul 2009 Location: Fredericksburg, VA Posts: 1,910	Never a good idea to post your phone number publicly like that. You get all kinds of nuts calling at all hours. __________________ If the guys who design 'em had to take one home, use it every day for 2 years, and do all the maint and repairs themselves, cars would have a button on the dash to change the oil, filters & plugs.

08-26-2009, 02:52 PM	#8
BernieB Senior Member Join Date: Jul 2009 Location: Fredericksburg, VA Posts: 1,910	Just follow the directions on the bottle. __________________ If the guys who design 'em had to take one home, use it every day for 2 years, and do all the maint and repairs themselves, cars would have a button on the dash to change the oil, filters & plugs.

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08-25-2009, 12:35 PM	#2
ArcticCat9203 Junior Member Join Date: Aug 2009 Posts: 5	It has a 4.3L Vortec V6 in it with a 4L60e transmission. 2x4

08-25-2009, 02:22 PM	#4
gmctrucks Senior Member Join Date: Nov 2006 Location: Houston,Texas Posts: 4,035	Before you take it out try a can of Lucas the stuff is good.

08-26-2009, 09:41 AM	#5
ArcticCat9203 Junior Member Join Date: Aug 2009 Posts: 5	What exacly is the product called you recommend. Lucas ??

08-26-2009, 10:56 AM	#6
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,030	Transmission Fix : Lucas Oil i believe that is what gmc is talking about.

08-26-2009, 11:54 AM	#7
ArcticCat9203 Junior Member Join Date: Aug 2009 Posts: 5	ok thank you i will give that a try do i just add it to my tranny or do i need to drain all the fluid first

08-27-2009, 01:34 PM	#9
ArcticCat9203 Junior Member Join Date: Aug 2009 Posts: 5	ok just bought a bottle today am going to try it soon