Why is my GMC Sierra not shifting properly?

Why is my GMC Sierra not shifting properly?

While driving the truck for about 45 minutes to an hour and if stopping at a stop sign or red light the truck will not shift from first gear to second gear properly. Once the truck does shift it is a very hard shift, and if on wet or slippery surfaces the truck will squall the tire. This started around 60, 000 miles.

When does a Silverado make a clunking sound?

When initially putting it in ‘Drive’ and slowly starting out on a slight downward grade, when the transmission shifts from 1st to 2nd, a loud ‘clunk’ sound comes from the rear end. The ‘clunking’ will occasionally happen at other times as well, but it always happens under the conditions I described.

How to fix driveline clunk in Chevy Silverado?

BTW: If your car is still under warranty, the dealer is now obligated to replace the u-joint with a new part. prior protocol for them was to apply grease as shown above. just a lil FYI i found out last month when i took my 08 Silverado into the delear for this service. I’m reading this just before I take my ’09 in on Saturday for a few issues.

When did the transmission go out on my GMC Sierra?

Transmission: been fixed 3 times and finally replaced a/c: repaired once front end-steering: repaired 3 times and still not fixed. GMC 2002 1/2 ton pickup,transmission reverse went out at 44,000 miles (first time it went out at 28,000 miles).

Why does my Chevy Silverado clunk when I put it in reverse?

Either way, there are ways to fix the problem to keep your truck running nice, quiet, and smooth. Loose u-joints cause a terrible clunk when you put your truck in reverse or drive, and are actually dangerous.

What do you do when your transmission clunks?

Put the emergency brake on and your truck in neutral. Putting blocks behind and in front of a wheel is extra insurance. Grab the drive shaft as well as the differential yoke, turn it one way and then the other. Look and listen for slack in the u-joints. You will be able to tell if one is loose. That is the culprit.

Why is my shift gauge not working on my Chevy Silverado?

Gauges that are not working could mean a faulty ignition switch. This has been an issue on this truck series. A bad ignition means that there may not be full voltage available to activate the shift solenoids. Replacing the switch will cure the problem. Figure 1. Look for blown fuses or damaged wiring.

Why are there no reverse slips in Chevy Silverado?

Reverse slips are slow to engage or is out: 1-2 shift does not happen at full throttle, there is a shudder when shifting, delayed or harsh shift: Issue with the second gear apply circuit, service servo assembly, or 1-2 accumulator – pressure test No Reverse in 2nd or 4th gear, 1st and 3rd only:

What was the problem with my GMC pickup truck?

Specifically, the lawsuit claimed the active fuel management (AFM) system, piston rings and PVC system in these vehicles were faulty and caused excessive oil consumption, as well as premature spark plug degradation and engine malfunction.

What to do if your GMC Safari has a hard shift?

The “hard shift” feels bad, but it’s not harmful to the transmission. Just the opposite; the slippage that makes the shift smooth is harmful when it is excessive. So, talk with the service manager about the problem and tell him you will bring it in when it’s happening. A friendly, realistic attitude usually works best.

Are there any transmission problems in GM cars?

GM has issued 13 technical service bulletins related to shifting issues alone, but “none of the suggested repairs have remedied the problem,” the lawsuit says. Dozens of complaints have been submitted by drivers to the National Highway Traffic Safety Administration over these transmission problems.

What causes hard shifting on a Silverado 1500?

A P1870 code (trans slippage) for instance will command max line pressure causing the hard shifts. You can get that code with bad fluids and filter or with something major going bad inside the trans. I can’t remember if this code will turn on the CEL or not.

Is there a GM hard shift transmission defect?

Ultimately, GM owners and lessees face mounting repair costs because of the alleged defect, the complaint says.

What’s the problem with my GMC Sierra 1500?

We have the same issue with our 93 gmc sierra 1500 4×2. Wont shift into second until we let off the gas then itll shift but then theres no over drive. Ive changed the solenoids, fluid and filter and even added lucas antislip. Nothing as worked. Any suggestions. Shop says it needs to be rebuilt.

How to check your GMC Sierra 1500 transmission?

An the TCC solenoid the signals from the power control model tells it when to shift check the Orange an yellow wire on the harness that connects to your driver side fire wall. 12volts to transmission to carry proper current 89 people found this helpful. Any questions or need of repair please call 513 808 5967

Why does my GMC truck not shut off?

OK, new ignition sw & harness installed, alarm system disabled. It puts all kind of codes in it. It’s been at the shop for almost 6 days and the tech’s have been working on it. It is a RAMDOM problem, don’t do it all of the time. Any more ideas? Any help will be appreciated. Thanks.

When did GMC Sierra reverse transmission go out?

GMC 2002 1/2 ton pickup,transmission reverse went out at 44,000 miles (first time it went out at 28,000 miles). Repaired for second time parts. Reaction shell gear stripped. Parts shell, gear, fltr kit, seal, seal oil, gasket. R&r trans replace reaction shell and gear. See all problems of the 2002 GMC Sierra .

Why is my GMC Sierra 1500 stalling and dying?

There is no code given. Have changed the injectors, timing, fuel tank, fuel pump, fuel pump, map sensor, cooling temp sensor on front of block, rebuilt the tbi, air idea valve. None of this hasite helped. The truck starts and dies. Have to give a little gas to keep running. While driving have to 2 foot it so it won’t die.

Why is my Chevy Silverado not shifting to 4wheel drive?

My 2000 G M C 1500 electric shift to 4wheel drive works just part of the time. probably trouble with the shift motor at transfer case ? also the right running light burns out every few weeks and the socket is badly burnt. Sounds like a problem I just had fixed.

When does Chevy Silverado shift into 2nd gear?

-In Drive, 1st engaged, no sleeping, at full throttle engine hit the rev limit and transmission won’t shift, shifts only when let off the gas. Same thing in 4HI or 4LO. – When I hit the throttle hard until 4000 rpm and let off it shifts at about 2500 rpm.

Can a shifting solenoid be replaced on a Chevy Silverado?

A shifting solenoid is pretty easy to replace; although, you have to remove the transmission pan to change them. A general trouble code may show that the transmission is slipping, but not pinpoint what the issue may be. Figure 2.

Can a GMC Sierra shift from 2WD to 4WD?

I have a 1998 GMC Sierra, with the 4WD on the floor. When I shift into 4WD no problem, when I shift out, it is very slow shifting back to 2WD, even if I slow way down or even stop, it may take longer to shift out of 4WD. Is this normal or do I have a problem I need to address.