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Chevy Silverado and GMC Sierra Transmission Problems

503 messages,  Last post on Nov 10, 2009 at 5:28 PM

You are in the Chevrolet Silverado & GMC Sierra Forum. Your Host is kcram

What is this discussion about? Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500, GMC Sierra 1500, GMC Sierra 2500, GMC Sierra 3500, Transmission, Truck


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#170 of 503
Re: Transmission Oil Change Question [1offroader] by maxwell10
Oct 20, 2007 (5:42 pm)
Reply

Replying to: 1offroader (Oct 14, 2007 6:27 pm)

Thanks for the reply,
 
sounds like draining is right for me, my 4l80e transmission has a drain plug.
 
What about changing filter,
 
I had transmission oil changed at GM dealership (60K). Nothing was said about a backflush so I am sure I got a oil/filter change.
 
Truck now has (77K)
 
Do you change filter and oil every 30K?
#171 of 503
Re: Transmission Oil Change Question [maxwell10] by 1offroader
Oct 20, 2007 (7:06 pm)
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Replying to: maxwell10 (Oct 20, 2007 5:42 pm)

I've done trans filter changes before but I notice that most trans "filters" aren't really filters at all, they're just coarse screens, almost like window screen size mesh. Take a look at it, if there's no junk on it leave it alone and save your $. Those kind of filters are just there to catch big chunks, not really fine particles. I can't personally say about yours, haven't seen it.
 
I have a 99 Trooper, it has a GM trans in it, you can't even get inside to change a filter (if it even has one), I just drain the ATF and refill. No trans probs at 70K.
 
1offroader
#172 of 503
1998 chevrolet z71 speed sensor by zavier13
Nov 03, 2007 (1:50 pm)
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does anyone know where the speed sensor is located on the transmission of a 1998 chevrolet silverado z71?
#173 of 503
Re: More Problems 93 5.7/4l60 not shifting [fgr8frk] by bamagal1
Nov 06, 2007 (11:24 am)
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Replying to: fgr8frk (Oct 14, 2007 12:01 pm)

I have an 05 4x4 1500 sierra (automatic) with 38k miles. I always thought it shifted funny but last week it became extremely sluggish shifting. By that evening - to get it to shift from 2nd to 3rd, I had to rev it up 2 or 3 times & let off before it would shift. The next morning, it would shift from 1st to second then to neutral, and would not come out of neutral without coming to a complete stop. My reverse and 1st & 2nd worked fine. No service engine or service anything light came on. Had to drive it to dealership in "2". I took it in (luckily I had an extended warranty) and the dealer installed a new transmission.
#174 of 503
Allison 5 speed - slack on takeoff by citizen48
Nov 09, 2007 (5:33 am)
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2001 GMC Sierra CC 8.1L 5 speed Allison 2 WD 62,000 mi -
 
Experiencing slack on takeoff -
 
Transmission?
 
U joints?
 
Any ideas?
 
Any help appreciated!
 
John
#175 of 503
Do I have an Allison? by lillies
Nov 12, 2007 (9:54 am)
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I recently bought a used 2003 Sierra HD Duramax. The salesman said it had an Allison. My neighbour said that Allison should be indicated on the model plate on the side of the truck, but ours simply states "DURAMAX - SIERRA 2500 HD".
 
How do I tell if it has the Allison?
#176 of 503
Re: Do I have an Allison? [lillies] by citizen48
Nov 12, 2007 (4:01 pm)
Reply

Replying to: lillies (Nov 12, 2007 9:54 am)

The only way I know to tell you is if you can look underneath the cab area and you can see a screw on/off small filter (looks just like an oil filter) separately from your oil filter, then it is an Allison.
 
One other option...run it 95mph and if your only running about 2600rpm on the tach...it's an Allison...LOL
 
Hope this helps!
#177 of 503
Remote keyeles by chevy100
Nov 15, 2007 (9:35 am)
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HI
IJUST WANA ASK YOU HOW TO PROGRAM MY OTHER REMOTE CONTROL
AS I HAVE TWO REMOTES BUT ONE IS WORKING FINE BUT THE OTHER ONE IS NOT PROGRAM
THANKS
#178 of 503
1998 1500 5-speed issue! by beaverman
Nov 17, 2007 (6:48 pm)
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I just bought a used Silverado, 2WD, 4.3L, W/ a 5-speed. After driving it 150 miles, yesterday a.m. leaving for work, I started it, pushed the clutch pedal to the floor. The fluid level was fine, couldn't get any pedal. I sat stewing for 30 min., and it finally let me shift.The idiot at the car lot said to pump the clutch pedal, then he told me to bleed the slave. Any ideas?
#179 of 503
Allison Transmission/battery light problem by shondyracing
Nov 24, 2007 (12:41 am)
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I have a 2005 silverado 3500 4wd with the 8.1L. My problem has me stumped. I started the truck early in the day, started to work and the trans light came on. The truck would not shift right. I hooked up the hypertech and got the codes for sensorA, B, C, D, E,. I checked the plugs all was fine. I cleared the codes and the truck shifts fine now. BUT the battery light stays on after the truck is turned off and it drain the battery. I dont know if its grounded out or the ecu is fried........

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