More info needed but my first guess is the cat is bad. Drive it at night and look under it. If it is bad it will glow.
1988+allegro+motorhome+owners+manual
what is the ignition timing for a 1988 Chevy 454 engine
Does your car have the 4 cylinder engine or the V6?
In a 1988 Chevy pickup the ECM is located behind the glovebox.
No
There is something not right with the engine.
The gross weight of a 1988 Chevy Silverado K2500 with a 5.01 engine is about 2.5 tons. This is equal to about 5,000 pounds.
Yes it will, but you have to put all the blazer engine stuff onto the beretta engine...
At the rear lower end of engine
Yes but modification will be needed
You can add power steering fluid to your 1988 Chevy Astro by removing the top to the power steering fluid reservoir. Pour the fluid directly into the reservoir.
My Motorhome still has the tune-up specs. on the 454 air cleaner housing. It says to undo the vac. at the distribator and plug it. Make sure the engine is runing at 700 RPMs and set the timing at 4BTC.