GMC Rally Wagon 2500 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your GMC Rally Wagon 2500

Select your GMC Rally Wagon 2500's year to get more detailed information:
Questions
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1990 GMC Rally Wagon 2500
2
answers
1990 GMC Rally Wagon 2500
1
answer
1994 GMC Rally Wagon 2500
1
answer
1994 GMC Rally Wagon 2500
1
answer
Repair Estimates
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GMC Rally Wagon 2500
$
107
to $
557
GMC Rally Wagon 2500
$
137
to $
415
GMC Rally Wagon 2500
$
404
to $
1,355
GMC Rally Wagon 2500
$
129
to $
219
GMC Rally Wagon 2500
$
129
to $
219

GMC Rally Wagon 2500 Problems

Flush brake fluid every 60,000 miles

Our technicians recommend flushing the brake fluid every 60,000 miles.  Brake fluid that is dirty may cause problems in the brake system.

Transmission Fluid Leak, Erratic Shifting

On the 4L80-E Transmission (Diesel and 7.4L gas engine), Transmission fluid may leak through the electrical connector on the side of the transmission, damaging the wire harness and causing the transmission to shift erratically. Our technicians tell us there are updated shift solenoids, an internal  transmission harness, and a connector pigtail available to correct this fault.

Service transmission every 30,000 miles
Our technicians highly recommend that the transmission is serviced every 30,000 miles to avoid problems and maintain optimal operating order.

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GMC Rally Wagon 2500 Questions

why does my heat blow hot in the rear.but blows out cold in the front (2 answers)

the vents in the front will blow warm air for a couple seconds then it get cool.while the rear vents blow heat all the time

need heat (2 answers)

I just changed our heater fan and i get air but no heat just air

Where and how to replace transmission pump seal? (1 answer)

I actually have a 1984 GMC Rally STX, but I figure the vehicle and years are close enough. Where can I purchase a used/new pump seal for my Turbo 700R4 transmission?

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GMC Rally Wagon 2500 Reviews

Got a 1 owner 1988 5.7L GMC Van from my GF's father who passed away. 85,000 miles and would still look new if it wasn't for the paint fading. This thing runs great and everything works, I love it. Her dad maintained this thing well.

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