GM U-Body Minivans
Common issues resolved via text/photo/video; includes links to all required parts. Applies to 1997-2005 Chevrolet Venture, Oldsmobile Silhouette, Pontiac Trans Sport, Opel Sintra, Vauxhall Sintra, Pontiac Aztek, Buick Rendezvous.
As you rebuild the engine and work out all the issues, be prepared to have the vehicle down for 1-2 weeks. Depending on environment and experience, job can also be accomplished in as little as a weekend.
As you take things apart, be sure to organize hardware into separate Ziploc bags and mark them up with appropriate names. After you do this job 3-4 times, you'll know every one of the bolts and nuts. Use below GM 3400 SFI reference shots of a pulled engine... for reference (helped me).
This photo of intake manifold sums up the state in which the engine was. I washed it, cleaned it with a brush in hard-to-reach areas, and painted it using high-heat paints. I chose to stick to 'factory look'.
While cleaning the cylinders/block, be sure not to create scratches. Use a non-metal dish scrub and a degreaser.
*Ideally you properly relieve pressure with a special tool by connecting to a port in the fuel rail.
While it is easy to remove the coolant hose connecting your oil filter to the block (by pulling with needle-nose pliers, it might not be so easy to install the hose back. Here's how you do it:
Upcoming lip design I'm working on will attach to factory bumper with very little work involved. Limited edition run; get in touch to reserve yours.
I never got into SUVs – they always felt too bulky, while not being overly roomy, so being a father of three, I prefer the #vankulture scene.
This is the most highly optioned minivan of its time:
Thunder was a rare package and as a result very few vehicles were produced – especially with this color combination, which makes this one of the most rare vans on the road today.
In 2003 there were 39,588 Pontiac Montanas made:
GM U-Body Minivans
Above: 1998 Pontiac Montana Thunder concept van.
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