1997 GMC Suburban 1500 Questions

Get answers to questions about your 1997 GMC Suburban 1500 at RepairPal. Find solutions, diagnose problems and get back on the road.

Refine by vehicle
Choose your vehicle
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more

My truck doesn't bounce all the time, only over certain bumps in the road, in certain areas.

It doesn't grind all the time and doesn't seem to happen at any particular time. Random.

its been making this horrible popping for about 3 weeks and getting worse, what is it and how much to fix?

Won't start if left off for more than two days. Once started, starts again first time every time within 2 days. Then won't start unless jumped and gas pumped repeatedly. Battery always checks out good. Dealer says no drain on battery, no codes on computer. Engine runs fine.
Check engine light has been on for 12 years - truck runs fine and passes emissions, but CO now requires no check engine lite. No codes on computer - dealer and repair shops can't fix.
Could it be altitude - how to reset computer?

When these stopped working the transmission stopped down shifting. I can manual shift but it takes off in second gear. This happed once before and I only had to restart the truck to fix the problem. But that doesn't work this time. I have been told trans speed sensor or engine module may be the problem. Does any one know?

I have replaced both shift solenoid's,the code keeps returning
i tested both solenoids for continuity , they are within the specific range. the code is erratic, sometimes it goes off continuously and other times it doesn't go off at all. PO758

Also burped cooling system for 30 min at 2000 rpm Any clues why?

Took truck to advance auto where they connected diagnostic handheld. Code P0161 came up. Bank 2 ,sensor 2.

Wear and tear like driving down bumpy road? Can it be welded back up and repaired cheaply? And popping noise as started upon coming to a stop.

tried to start next day and blew muffler wide open. engine does turn over but has extreme miles on the odometer. engine has average compression of 140. after all this still no start.

have replaced intake gaskets(upper and lower)plus all other gaskets up top.NEW (plugs,wires,cap and rotor replaced mo ago)brand new ign mod,,coil,maf sensor, crank sensor,EGR,catalytic convertor,all O2 sensors,injectors were removed and cleaned,...replaced all of this stuff and still engine backfires,have adjusted timing traced every wire,vaccuum hose...checked and double checked each and every electrical connection, and then some...still backfires. have bent accelerator cable bracket to increase idle a tiny bit... nothing is working... still back fires,, i am at the end of the tool box.. dont know what else to do..talked to mechanics friends etc.. they are baffled too..someone please give me a new direction to look....any help would be appreciated