GDL Autoparts

GDL Autoparts GDL Autoparts is the parts division of GDL Automotive, supplying the same trusted parts we use in our own workshop.

Specialising in Jeep, RAM, Chrysler, SRT and Mopar platforms, we offer proven parts backed by real world mechanical experience.

02/09/2026

We often get asked how we flush coolant in the Grand Cherokee's, especially after an oil cooler failure.

We use specialist equipment that evacuates the entire cooling system, removes trapped air, and then draws in fresh coolant under vacuum. That means:

No air pockets
Proper bleed and flush the first time
Full coolant replacement, not just a top up

For the DIY guy or girl at home, I know that’s probably not what you wanted to hear 😅

But fret not, you can make it work if you own a garden hose. Just take your time and please be mindful of the environment when disposing of the old coolant. It’s harmful and should never go down stormwater drains.

If you’d rather have it done properly the first time or not deal with the clean up and disposal, give us a ring on 9987 2818 and we can sort your out

26/08/2026

Two RAMs. Two cams. One very problem.

We’ve got two 5.7L HEMI RAMs in the workshop, both with the same P0308 cylinder 8 misfire, and both showing very similar camshaft and lifter damage.

One has travelled 102,000 km, the other 126,000 km, and in both cases the plugs and coils had already been moved around without the misfire following them.

Once we got further into them, the problem became clear. The camshaft lobes are starting to erode. With corresponding wear and pitting on the lifter rollers. On one engine, we can already see the beginnings of the same damage across multiple lobes.

It doesn’t take a completely destroyed camshaft to log a code either. Once the lobe wears just enough that the valve isn’t opening as far as it should, the ECU can detect the difference and start logging a misfire on the 's. We often see the SRT Jeeps come in with far worse lobe damage and misfire.

So if your 5.7 HEMI RAM has a persistent misfire, don’t immediately throw plugs and coils at it.

Move the plug and coil to another cylinder first. If the misfire stays on the same cylinder, it’s time to start looking deeper.

And if the heads and camshaft have to come out anyway, it’s the perfect opportunity to carry out an delete and replace the affected valvetrain components while we’re in there.

Watch the video to see exactly what this wear looks like before the camshaft is completely chewed out.

25/08/2026

Jeep Grand Cherokee Coolant Leaks?

Coolant leaks are something we see constantly on , but where they leak from depends heavily on which engine you have.

On the 3.0L , there are quite a few potential culprits, including the valley hose pack, water pump, EGR cups and the infamous O ring on the octopus.

The 3.6L commonly develops leaks from the radiator, heater hoses and water pump.

And on the V8s, we regularly see leaking heater hoses, radiators and water pumps, particularly from the seal behind the water pump pulley.

the heater hose assemblies are different between the diesel, 3.6 and V8, so make sure you’re getting the correct part.

In this video Dannie runs through the common WK2 coolant leaks we see in the workshop and shows you exactly what to look for. We'll release an updated video with some shots of the leaks themselves soon.

If your Grand Cherokee is mysteriously losing coolant, this is one worth watching.

25/08/2026

Another HEMI lifter failure, and this time we’ve got two in the workshop with the same problem.

Both came in with misfires. On this one, the cylinder 8 exhaust lifter has started to pit and is making contact with the camshaft. While rotating the engine, the exhaust rocker wasn’t moving properly, meaning the valve wasn’t opening as it should and the cylinder was misfiring.

Next step is pulling the camshaft, and we’re expecting to find the matching cam lobe damaged as well.

A quick correction from the video too. We accidentally refer to this as an MDS lifter failure, but cylinder 8 is not an MDS cylinder, so this particular failure is actually a non MDS lifter failure. We talk about HEMI MDS failures so often that it was simply a slip up.

That said, if you’ve already reached the point where the cylinder heads and camshaft need to come out because of a failed lifter, it makes a lot of sense to carry out an MDS delete at the same time.

A large part of the labour is already being done, and it gives you the opportunity to replace the lifters and address the system while the engine is apart rather than putting everything back together and potentially dealing with another lifter problem later.

If a lifter fails badly enough, the damage doesn’t necessarily stop at the camshaft either. Debris can make its way through the engine and potentially turn a top end repair into a much bigger problem.

An MDS delete isn’t cheap, but replacing a engine is always going to cost considerably more.

These have been flying off the shelves this week.These little elbows are part of the Quadra Lift air suspension system f...
25/08/2026

These have been flying off the shelves this week.

These little elbows are part of the Quadra Lift air suspension system found in the Grand Cherokee and 's. They can cause abit of a headache when they start leaking.

If you walk outside in the morning and find your Grand Cherokee sitting on its guts, there’s a good chance one of these fittings could be the culprit.

There’s also a really simple way to check them at home.

Start the car and give the air suspension time to pump itself back up. Then mix up some soapy water in a spray bottle and spray it around the air line elbow fittings at the top of both front strut towers.

If there’s a leak, you’ll see bubbles forming around the fitting. You can’t miss it.

The same trick works for finding a slow leak in your tyres too. Spray soapy water around the suspected area and watch for bubbles.

If your is dropping overnight, don’t ignore it. A small air leak can make the compressor work much harder than it should and potentially turn a cheap repair into a much more expensive one.

Diesel injectors are often overlooked when diagnosing engine problems, but a faulty injector can cause far more than p...
19/08/2026

Diesel injectors are often overlooked when diagnosing engine problems, but a faulty injector can cause far more than poor performance.

Excessive smoke, misfires and emissions system faults can all point towards trouble. In severe cases, a failing injector can destroy an engine.

This cracked has a huge hole blown through it, caused by faulty fuel injectors.

Having your diesel injectors tested and serviced every 100,000 km could help identify a problem before it leads to catastrophic engine damage like this.

19/08/2026

Jeep owners, dont throw this small part away!

This is the axle guide washer. It helps guide the axle shaft through the differential housing during installation, reducing the chance of the splines catching and damaging your brand new axle seal.

Dont forget the guide washer will push any dirt, grease or debris inside the axle tube towards the new seal, so make sure you have a nice clean tube before the axle shaft goes back in.

If you find one of these little Star Wars Imperial symbol looking washers while removing your axles, keep it. You will need it when your goes back together.

Already tossed yours? Contact GDL Autoparts We’ve got plenty available.

Another 3.0L is on its way out of this Grand Cherokee.Busy start to the week with the team already deep into multiple ...
17/08/2026

Another 3.0L is on its way out of this Grand Cherokee.

Busy start to the week with the team already deep into multiple major engine jobs

14/08/2026

Before you replace the timing chain on your powered , check this out.

A long crank, engine light and a camshaft and crankshaft correlation fault code can easily lead you towards a stretched timing chain diagnosis on the 3.6 Pentastar.

But there is another common cause that should be checked first.

In this video, Dannie explains how four small bolts inside the cylinder heads can loosen, causing a loss of oil pressure to the cam phasers and triggering the fault.

Worth the check before you start throwing expensive parts at the problem.

13/08/2026

Had Recall 66A done on your diesel Grand Cherokee? Did you know can still have a tone wheel failure.

There’s a common misconception that the 66A recall actually fixes the tone wheel problem. It doesn’t.

The changes how the vehicle responds if the tone wheel fails, helping prevent the engine from suddenly shutting down while you’re driving. But once you stop and turn the vehicle off, you may still be left with a that won’t restart and a tone wheel that needs replacing.

We’re still replacing these regularly.

In this video Dannie explains exactly what Recall 66A does, what it doesn’t do, and what Grand Cherokee diesel owners need to know.

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