I had an 86 Suburban that did that. I replaced the delay control module, the wiper motor, checked all wiring to no avail. The only thing not replaced was the control stalk. Gave up and got my D/A instead.
No problem with stopping and starting, but that sounds familiar with the mid to late 90's GM's having this problem. It was a recall IIRC.
Unfortunately, I drove the '04 in the rain the first time last night.
The wipers on these trucks are the BEST that I have ever seen! Wipe great, no chatter, FAST and very, VERY, VERY quiet when on high. Most cars' wipers make quiet a racket on high. Mine seem to glide quietly and effortlessly across the window. Very good job by GM on these.
Even the spray is great in the wiper arm. Will come in handy in the snow.
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